+Andrew Hollomon Now that would be a cool video, also will we be able to move into building the stations in space as oppose to sending up sections and attaching them together like we do now.
+EM1 O it was much smaller 0.1 inch wide news.google.com/newspapers?nid=1917&dat=19890727&id=2XEhAAAAIBAJ&sjid=W4gFAAAAIBAJ&pg=958,6012763&hl=en NASA report 3.88 millimeters (0.1527559 inch) wide by 0.43 mm deep (0.01692913 inch) articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=2001ESASP.473..191H&db_key=AST&page_ind=0&data_type=GIF&type=SCREEN_VIEW&classic=YES
To everyone thinking "Ewwww, recycled pee!" Literally every drop of water you have drank was pee at some point in its existence. Some of it was even probably your own pee at some point.
+Teth47 I can´t remember where I read it, but I´ve heard that every drop of drinking water has been inside 5 living beings before you drink it. But idk, could be bullshit.
+Jeremy J. I don't have a source to point at, but I think five may be way too low based on what I remember hearing. (Maybe vsauce did a video mentioning this?)
+Jeremy J. It has to do with probabilities. Their are so many molecules of H2O in a glass of water, that statistically you have the chance to drink one or more molecules from Leonardo, Picaso, Jesus, Mohammed, George Washington, Stalin, Hitler, Marilyn Monroe... etc. Now, you also need to take into account this important part to. Just as they say that there are more stars in the sky ten grains of sand under your feet, the same line of thought can be applied to the tiny molecules of H2O. I just can remember what it was referenced to, so I'm not going to give incorrect analogy. But I think I explained well enough to be understood. Hope that helps. Prost!
+Ben Mevis It takes time to mix it up though, to be able to reliably claim that(probability increases with time). If you give it enough time, yes, all material on the planet, including earths crust, get mixed. But if that H2O molecule gets deposited on a polar cap for example, it might take millions of years to get back into game, so to say.
Wow, great job guys! You presented 3 dangerous things about space travel, and they actually DO seem like they would be unexpected. I'm so used to other videos and links with titles like, "AMAZING cleaning potential from something ORDINARY you'd NEVER EXPECT" ...and it turns out to be vinegar. Yeah no shit, everyone knows about vinegar.
+Alex Paysen I think it's not sarcasm. I mean I dreaded the same thing, but who would know about tin whiskers if they weren't in some electrical or metallurgical related field
The tin whisker problem definitely got worse when lead was banned from solder. I've seen loads of "solutions" but none of them are 100% effective and some introduce other failure modes.
the whole getting rid of lead in our solder has been mostly bad in my opinion, lead free stuff is tricky to solder has the tin whisker problem and fails after a few years anyway
+Jason H "less prone" really should read "basically never has". Lead added to tin prevents the whiskers from forming in straight lines if they even manage to form. Lots of other alloys will work too.
the thing I love about space is that it just shows us our delicate and efficient we need to be in the world around us which translates into we should be doing a lot better conservation efforts on earth not just space.
Tin Whiskers are a concern on here on Earth, as well. Unfortunately, environmental laws require the use of led-free tin for consumer electronics. Only military and medical applications can use the old tin that has led inside to prevent these whiskers. As a result all consumer electronics - laptops, phones, cameras have a built-in death clock inside. If you are wondering why your old laptop is burning hot, even after a thorough cleaning and thermal compound replacement, this is one of the reasons. Bad for consumers, excellent for manufacturers, who want to sell you new piece of hardware every several years. Of course, led is very bad for humans. Specialized equipment like pace makers will make sure all the led is not going to come in contact with the patient's body, unlike a cheap, poor QC consumer hardware. So, led-free tin is good for humans. Just don't think your new camera lens will last you a lifetime. More like 10 years tops.
+Georgi Bonchev Also, the lead in leaded solder is part of an alloy. It can't leach out when it's in that form. So, the environmental laws that prevent usage of leaded solder are complete garbage, and don't save anyone's lives.
@@cyb3ar897 Metallic lead really isn't a problem anyway, it's lead salts that are absorbed by the body not metallic lead. a lot of the "dangers" politicians talked about to get the tin/lead solder bans through such as "workers inhaling vaporized lead while soldering" is complete bullcrap because lead boils at over 4x the temperature used for soldering. Also the aggressive fluxes required for lead free solders are toxic (which is made worse by the high temperatures required for lead free soldering) and require a fume hood where tin/lead uses rosin flux, basically dried tree sap, the same stuff they apply to a violin bow. If they really wanted to get rid of 95% of all lead used by industry, ban lead acid batteries and replace them with Lithium-iron batteries. Electronics solder counted for less than 5% of industrial lead.
+Lord Zephyros its kinda what they do on the ISS and all space vehicles lol i dont think anyone has died from it as its a problem we have long known about, the ISS has a very small unnoticable draft that does it.
+Lord Zephyros a fan will not get ALL the air to be circulated, and if you had a fand powerful enough to do that then it would feel like a wind storm, add the deafening sound to that and that makes it impossible to sleep.
I subscribe to SciShow Space and I play Kerbral Space Program... That means I'm pretty much an expert on space travel.. more than qualified for a nasa mission, thank you very much.
I've heard of tin whiskers in relation to soldered joints. For many years, until lead was deemed too hazardous to use in that application, solder had been made of tin and lead. And circuits would experience failures for the reasons mentioned in this video.
+rchandraonline Actually, now that they've gotten rid of the lead in solder, the tin whiskers problem is a lot worse. Besides being a nightmare to use, the tin/copper "green" solder is 99.3% tin, as opposed to 60% tin in the old 60/40 leaded solder. Tin whiskers form readily with the new solder, especially across the gaps between connection points on newer circuitry, which are only getting smaller and smaller. Despite its being deemed "hazardous", the lead in the old solder did a better job of keeping the whisker problem under control.
@@Dosbomber And thanks to that a lot more electronics fail and get dumped in landfills. If they really anted to reduce 90% of the lead used in industry they would have banned lead acid batteries instead.
Unless its changed recently, the metal whiskers are the reason lead based solders are the preferred type for long term reliability. That was what I was taught during my aerospace soldering classes years back.
my father is a retired aerospace engineer for Lockheed Martin, and Raytheon post retirement. He was a senior checker. He always told me about using a microscope to inspect electronic circuits for these tin whiskers, after he approved the blueprint schematics for phase 2.
Living in Iowa, and being a fan of Toyota, I find tin whiskers funny due to the fact that Senator Chuck Grassley of Iowa has tried to pin Toyota's Prius unintended acceleration issue on tin whiskers. Hint: the real reason is novice drivers (No drivers of manuals ever have reported unintended acceleration in any past case, with any manufacturer). Anyway, keep up all the fun and informative videos SciShow/Space/CC !!!!
+Matt Horakova Here is one example where tin whiskers caused a Toyota automobile (Camry 2003) to accelerate/decelerate in an unintended manner. H. Leidecker, L. Panashchenko, J. Brusse, "Electrical Failure of an Accelerator Pedal Position Sensor Caused by a Tin Whisker and Investigative Techniques Used for Whisker Detection", 5th International Tin Whisker Symposium, Sept. 2011 nepp.nasa.gov/whisker/reference/tech_papers/2011-NASA-GSFC-whisker-failure-app-sensor.pdf
+Jay Brusse The owner of nepp.nasa.gov has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website. -- not like i care THAT much, but thank you for attempting to give me the info. was merely an amusing observation by myself, wasn't trying to prove anyone right or wrong.
Do spaceborn electronics have bans on lead solder too? I figure they'd use the lead regardless of possible environmental impact, since it helps to mitigate whiskers forming. and in space, the environmental impact is significantly lower for lead.
+Nontheistism The quantities involved are probably minuscule. I mean lead _is_ still used for certain applications e.g. car batteries. I imagine far less than 1% of the world's mined lead would ever go into space.
***** The lead solder ban is mostly in the EU anyway. China and NA don't entirely ban the use of lead to prevent whiskering. And banning lead solder can cause an increase in pollution by making products that wear out faster by shorts caused by whiskering. Correction, China banned lead in consumer products in China. But I still see items made in china with lead solder for sale, at least in Canada. Also california is on the lead ban bandwagon... Which makes me wonder how car batteries in CA get around it, since they are a consumer product :P
Lolwutfordawin The legal wording technically would make it apply to batteries as well, though. Since it just states something akin to "Lead in consumer products" Eventually some case will come along that either ends up getting lead acid batteries in the consumer market banned, or forces an amendment of the wording to not screw over everyone with a car. :P
Maybe it's just me but I feel that the phrase "humans exhale carbon dioxide" could be interpreted very wrongly. As in people thinking that means that what we exhale is *pure* or *mostly* carbon dioxide. *It is not*. What we exhale is diminished in oxygen and enriched with carbon dioxide. We exhale about 4% to 5% by volume more carbon dioxide and 4% to 5% by volume less oxygen than was inhaled. So about 21% oxygen and almost zero (~400ppm) carbon dioxide by total volume gets inhaled then about 16% oxygen and 5% carbon dioxide by total volume gets exhaled.
And silver! The effect occurs in silver-plated switches, capacitors and other components in old radios for instance. (I don't think it's very important to most modern electronics though.)
I saw the thumbnail and instantly new tin whiskers!! I hated those things. Also, did you know about the pee-sicle that froze to the size of one of the orbiters and they had to use the Canadian arm to get it off?
I wonder if the manufacturers of electronics waterproofing solutions could get into this area. One coating to stop moisture damage and these whiskers? Cool video anyway, I had never heard of this before.
I don't get why people get so upset over drinking recycled pee. Over the course of several million years, at least one living being pissed out a portion of the water you drink daily.
Expected 2 of those 3 dangers. Didn't know about tin whiskers. You forgot about the ancient cosmic horrors like the Space Leviathan. I guess those are somewhat expected though.
Aside from tin whiskers, why wouldn't you put a protective coating on electronics designed for space? Stuff floats around, so if a simple coating can stop other stuff touching bare metal I don't see a down side.
You forgotten one very important point on unexpected danger in space travel. And that is human himself. Being cramped in a small area, with nothing better to do can change a person psychology and makes him crazy and do dangerous stuffs that can kill everyone on board e.g. via moral hazards, becoming more careless etc.
When he said it vaporizes urine I thought he said vaporizes Uranus and I was totally confused and at the same time very pleased and immediately started thinking of Star Trek
Actually, solar panels (silicon mono or polycrystalline) have a natural degradation that comes from using them as intended. This can be seen on the ground. Frozen pee micro hail may or may not play a significant role, but the hard radiation above the bulk of the atmosphere sure does not help with technical degradation by design.
+Ross Armstrong Sleep apnea, but that may also extend to a lack of oxygen, but you're correct. Plus, even if someone DID wake up from lack of oxygen, that would leave the astronauts unable to get enough sleep to be alert and focused for their work.
+Ross Armstrong They do wake up from it though which is why sleep apnea ruins your sleep. +Tricell CEO Your body has no mechanism of detecting a lack of oxygen. Also, by the time you've depleted the oxygen in your bloodstream or the air you breathe enough to be dangerous, you've produced so much CO2 that you've long been dead from that.
Most likely, as the severe cold of the vacuum of space will freeze into that crack, make it expand, and crack it. If it were a shuttle or a pod, then re-entry would be just a massive fireball of death.
The greatest danger that I see, are those planned 6 people going to Mars for 6 - 9 months in a tin can that measure 10' x 20'. That is a recipe for a new 'Lord of The Flies ' encounter! . JMO
2:45 I doubt this would be harmful unless the entire cabin was full of CO2. CO2 has a rather powerful physiological effect on you. As CO2 levels in the blood increase it triggers the breathing reflex. This is why humans usually can't hold their breath as a method of suicide. This reflex is so strong it will even take place under water, even though this will probably kill you. If breathing doesn't decrease the level of CO2 you start to feel panicky this feeling will increase rapidly until you find fresh air or until you die. Most likely a person sleeping in Zero G would wake up long before you would die this way.
tin whiskers in electronics are easily avoided by using lead based alloys in the solder. but we're too concerned about parents who let children chew on circuit boards (wtf?) to allow lead in our solders.
+Awesomeness Hippopotamus Unexpected is in the scientists didn't think of such dangers or thought them impossible. The video is due to, well, let's just say they learnt it the hard way and now they know.
Is it possible to travel to another galaxy? I heard that we have a lot more influence of dark mater within galaxy. I mean theoretically - is there some obstacles and danger in space between galaxies? Will not our spacecraft decay on molecules, and lost its stability beyond galaxy's boundaries?
Even at the speed of light, it would take hundreds of lifetimes to get to our nearest galaxy. Dematerializing is a meh, as I think of it as being sucked into a black hole, or at least the stretching.
Conformal coatings don't really solve the problem tin whiskers are atomically sharp and grow right through like a bamboo shoot through a concrete sidewalk.
+KiddsockTV Did you know that NASA has a guy hired just to smell things going to the ISS and stuff, because smells very much linger around. Wonder how they deal with the farts tho.
I don't quite buy that one would die from CO2 asphyxiation while asleep. While it is true that at levels of 8% will cause death from asphyxiation, it is also true that it is the level of CO2 in your bloodstream that regulates how fast you breathe. As levels of CO2 build up, your bodies regulatory system makes you breathe faster. Which is why anyone performing an active activity like running or swimming, will increase their breathing. Often to the point of panting. My point is, even in sleep if your CO2 blood levels increased to the point of near asphyxiation you would be awaken by the feeling of not being able to breathe!
Welcome to Mir! Sorry for the dim lighting, we used to be able to turn the lights on when the solar panels worked, but you know... now we're covered in pee impact craters.
Their pee came back to haunt them. - SciShow Space 2016
Loool
+Abhyuday Skywalker And the sequel: "Number 1, 2".
+Abhyuday Skywalker Said the blind man, to his deaf son while peeing into the wind
"Cancer is an inside job."
-Hank Green
In space no can hear you pee
You guys should do a video on how the ISS was built, and what to expect as far as future space stations go.
They launched different parts of the ISS into space then they combined them together using couplers.
+Andrew Hollomon Now that would be a cool video, also will we be able to move into building the stations in space as oppose to sending up sections and attaching them together like we do now.
Good idea! I third this
+Doomsdaywillcome Obviously they meant details.
+John J Probably. In 200 years?
**BOOM**
"OH SHIT WHAT HAPPENED?"
"we hit some dust"
that's not dust....it's pee
+Yocool13's Channel
Gives a whole new meaning to the term shitting someone into oblivion...
+Flintstoned that's not dust its a whisker
aaaaaa
+EM1 O it was much smaller 0.1 inch wide
news.google.com/newspapers?nid=1917&dat=19890727&id=2XEhAAAAIBAJ&sjid=W4gFAAAAIBAJ&pg=958,6012763&hl=en
NASA report 3.88 millimeters (0.1527559 inch) wide by 0.43 mm deep (0.01692913 inch)
articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=2001ESASP.473..191H&db_key=AST&page_ind=0&data_type=GIF&type=SCREEN_VIEW&classic=YES
To everyone thinking "Ewwww, recycled pee!" Literally every drop of water you have drank was pee at some point in its existence. Some of it was even probably your own pee at some point.
+Teth47 I can´t remember where I read it, but I´ve heard that every drop of drinking water has been inside 5 living beings before you drink it. But idk, could be bullshit.
+Jeremy J. I don't have a source to point at, but I think five may be way too low based on what I remember hearing. (Maybe vsauce did a video mentioning this?)
+Jeremy J. It has to do with probabilities. Their are so many molecules of H2O in a glass of water, that statistically you have the chance to drink one or more molecules from Leonardo, Picaso, Jesus, Mohammed, George Washington, Stalin, Hitler, Marilyn Monroe... etc.
Now, you also need to take into account this important part to. Just as they say that there are more stars in the sky ten grains of sand under your feet, the same line of thought can be applied to the tiny molecules of H2O. I just can remember what it was referenced to, so I'm not going to give incorrect analogy. But I think I explained well enough to be understood.
Hope that helps. Prost!
Ben Mevis Bottoms up with dinosaur pee!
+Ben Mevis It takes time to mix it up though, to be able to reliably claim that(probability increases with time). If you give it enough time, yes, all material on the planet, including earths crust, get mixed. But if that H2O molecule gets deposited on a polar cap for example, it might take millions of years to get back into game, so to say.
That is how I DO *NOT* want to go out. _"...oh, he died from pee ice..."_
+GreyFang9 That is a danger even here on Earth, look up blue ice precipitation.
conduit64 Oh, I Know. and I thought planes were no longer allowed to do that.
GreyFang9
It can still be caused by leaks in the tanks or drain ports.
GreyFang9 a
Wow, great job guys! You presented 3 dangerous things about space travel, and they actually DO seem like they would be unexpected. I'm so used to other videos and links with titles like, "AMAZING cleaning potential from something ORDINARY you'd NEVER EXPECT" ...and it turns out to be vinegar. Yeah no shit, everyone knows about vinegar.
Sarcasm?
+Alex Paysen I think it's not sarcasm. I mean I dreaded the same thing, but who would know about tin whiskers if they weren't in some electrical or metallurgical related field
The tin whisker problem definitely got worse when lead was banned from solder. I've seen loads of "solutions" but none of them are 100% effective and some introduce other failure modes.
I am pretty sure you can use lead in space.
the whole getting rid of lead in our solder has been mostly bad in my opinion, lead free stuff is tricky to solder has the tin whisker problem and fails after a few years anyway
The russians were pissed to hear that pee destroyed 60% of their solar panels.
40*
40* left
+Kevin Miedema 140%
its over 9000!
+Kevin Miedema That escalated quickly.
I really want you to put an annotation over the "DO NOT PRESS" button at 2:30.
Did you hear the one about the space walking astronaut who was knocked off his work platform by space debris?
He was pissed off.
Metallic whiskers. I've never heard of anything like that before. I wonder what kinds of industrial applications could come of that.
+1acroyear1
phones breaking at a controlled rate?
+sbraz woah
+1acroyear1 They are the reason lead based solders are still preferred for long term reliability. Less prone to this phenomenon.
+Jason H thanks man for the info
+Jason H "less prone" really should read "basically never has". Lead added to tin prevents the whiskers from forming in straight lines if they even manage to form. Lots of other alloys will work too.
Peeing in space? Urine trouble.
the thing I love about space is that it just shows us our delicate and efficient we need to be in the world around us which translates into we should be doing a lot better conservation efforts on earth not just space.
The metal whiskers are probably the first thing I've ever learned from the sci-shows. Good work.
Tin Whiskers are a concern on here on Earth, as well. Unfortunately, environmental laws require the use of led-free tin for consumer electronics. Only military and medical applications can use the old tin that has led inside to prevent these whiskers.
As a result all consumer electronics - laptops, phones, cameras have a built-in death clock inside. If you are wondering why your old laptop is burning hot, even after a thorough cleaning and thermal compound replacement, this is one of the reasons.
Bad for consumers, excellent for manufacturers, who want to sell you new piece of hardware every several years. Of course, led is very bad for humans. Specialized equipment like pace makers will make sure all the led is not going to come in contact with the patient's body, unlike a cheap, poor QC consumer hardware.
So, led-free tin is good for humans. Just don't think your new camera lens will last you a lifetime. More like 10 years tops.
+Georgi Bonchev Adding bismuth, or indium to the tin can help prevent the whiskers, though they are more expensive than lead.
+Georgi Bonchev Also, the lead in leaded solder is part of an alloy. It can't leach out when it's in that form. So, the environmental laws that prevent usage of leaded solder are complete garbage, and don't save anyone's lives.
@@cyb3ar897 Metallic lead really isn't a problem anyway, it's lead salts that are absorbed by the body not metallic lead. a lot of the "dangers" politicians talked about to get the tin/lead solder bans through such as "workers inhaling vaporized lead while soldering" is complete bullcrap because lead boils at over 4x the temperature used for soldering. Also the aggressive fluxes required for lead free solders are toxic (which is made worse by the high temperatures required for lead free soldering) and require a fume hood where tin/lead uses rosin flux, basically dried tree sap, the same stuff they apply to a violin bow.
If they really wanted to get rid of 95% of all lead used by industry, ban lead acid batteries and replace them with Lithium-iron batteries. Electronics solder counted for less than 5% of industrial lead.
Bear grylls would probably have no problem living on the I.S.S.
When in space - urine it to win it.
I guess the ISS designers learned from their peers on Mir.
+Brad Evans wouldn't that be peeers?
+Josh Adams ssshhhh
Number 2 can be resolved easily with a fan circulating the air
+Lord Zephyros True, it's an easily solved problem, but it's one that you wouldn't really think of, and it will kill you if you don't remember.
+Lord Zephyros its kinda what they do on the ISS and all space vehicles lol i dont think anyone has died from it as its a problem we have long known about, the ISS has a very small unnoticable draft that does it.
+Lord Zephyros a fan will not get ALL the air to be circulated, and if you had a fand powerful enough to do that then it would feel like a wind storm, add the deafening sound to that and that makes it impossible to sleep.
The Harley Dragon well it does, seeming poeple have been on the ISS for years now everynight sleeping and not dying lol.
+The Harley Dragon it doesn't need to move all of the air, it just needs move enough of the air to mean that they don't get headaches.
I subscribe to SciShow Space and I play Kerbral Space Program... That means I'm pretty much an expert on space travel.. more than qualified for a nasa mission, thank you very much.
Well, it seems we are both qualified to go to space! :D
+Len Waugh LOL Me too.
But I really suck at KSP...
+Len Waugh
Unfortunately for you... NASA stands for Never Accomplishing Space Anymore.
I've heard of tin whiskers in relation to soldered joints. For many years, until lead was deemed too hazardous to use in that application, solder had been made of tin and lead. And circuits would experience failures for the reasons mentioned in this video.
+rchandraonline Actually, now that they've gotten rid of the lead in solder, the tin whiskers problem is a lot worse. Besides being a nightmare to use, the tin/copper "green" solder is 99.3% tin, as opposed to 60% tin in the old 60/40 leaded solder. Tin whiskers form readily with the new solder, especially across the gaps between connection points on newer circuitry, which are only getting smaller and smaller. Despite its being deemed "hazardous", the lead in the old solder did a better job of keeping the whisker problem under control.
I still have several rolls of old lead solder. Perhaps I could sell it on the black market lol
tin/lead solder is still used in spaceflight, commercial aircraft and medical devices where the risks from tin whiskers are considered too high.
@@Dosbomber And thanks to that a lot more electronics fail and get dumped in landfills. If they really anted to reduce 90% of the lead used in industry they would have banned lead acid batteries instead.
@@cgaccount3669 You can still get tin/lead solder. you could make it if you had too.
This guy kinda looks like how Avatar (The Last Airbender) would look like as an adult.
Unless its changed recently, the metal whiskers are the reason lead based solders are the preferred type for long term reliability.
That was what I was taught during my aerospace soldering classes years back.
The concept of a CO2 bubble forming while asleep never occurred to me, and I can't get it out of my head now.
my father is a retired aerospace engineer for Lockheed Martin, and Raytheon post retirement. He was a senior checker. He always told me about using a microscope to inspect electronic circuits for these tin whiskers, after he approved the blueprint schematics for phase 2.
I pressed the "Do Not Press" button at 2:29
+benukysz Now everyone has to press the button or they will be killed by their own farts.
I'm sorry. I just had to.
Living in Iowa, and being a fan of Toyota, I find tin whiskers funny due to the fact that Senator Chuck Grassley of Iowa has tried to pin Toyota's Prius unintended acceleration issue on tin whiskers. Hint: the real reason is novice drivers (No drivers of manuals ever have reported unintended acceleration in any past case, with any manufacturer). Anyway, keep up all the fun and informative videos SciShow/Space/CC !!!!
+Matt Horakova
Here is one example where tin whiskers caused a Toyota automobile (Camry 2003) to accelerate/decelerate in an unintended manner.
H. Leidecker, L. Panashchenko, J. Brusse, "Electrical Failure of an Accelerator Pedal Position Sensor Caused by a Tin Whisker and Investigative Techniques Used for Whisker Detection", 5th International Tin Whisker Symposium, Sept. 2011
nepp.nasa.gov/whisker/reference/tech_papers/2011-NASA-GSFC-whisker-failure-app-sensor.pdf
+Jay Brusse The owner of nepp.nasa.gov has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website. -- not like i care THAT much, but thank you for attempting to give me the info. was merely an amusing observation by myself, wasn't trying to prove anyone right or wrong.
Wow, actual unexpected dangers I didn't know about!
Thanks for this great episode, SciShow!
See, this is why I don't go into space.
4) Orks: look, just bring guns, lots of guns, big guns at that... trust me on this, you'll need them
Do spaceborn electronics have bans on lead solder too? I figure they'd use the lead regardless of possible environmental impact, since it helps to mitigate whiskers forming. and in space, the environmental impact is significantly lower for lead.
+kauske Mining lead on Earth to use in space still would have a significant environmental/human health impact
+Nontheistism The quantities involved are probably minuscule. I mean lead _is_ still used for certain applications e.g. car batteries. I imagine far less than 1% of the world's mined lead would ever go into space.
*****
The lead solder ban is mostly in the EU anyway. China and NA don't entirely ban the use of lead to prevent whiskering. And banning lead solder can cause an increase in pollution by making products that wear out faster by shorts caused by whiskering.
Correction, China banned lead in consumer products in China. But I still see items made in china with lead solder for sale, at least in Canada. Also california is on the lead ban bandwagon... Which makes me wonder how car batteries in CA get around it, since they are a consumer product :P
+kauske Here in the EU lead solder is banned, but it's still used in car batteries. You can still legally use it for private applications as well.
Lolwutfordawin
The legal wording technically would make it apply to batteries as well, though. Since it just states something akin to "Lead in consumer products"
Eventually some case will come along that either ends up getting lead acid batteries in the consumer market banned, or forces an amendment of the wording to not screw over everyone with a car. :P
Maybe it's just me but I feel that the phrase "humans exhale carbon dioxide" could be interpreted very wrongly.
As in people thinking that means that what we exhale is *pure* or *mostly* carbon dioxide. *It is not*. What we exhale is diminished in oxygen and enriched with carbon dioxide. We exhale about 4% to 5% by volume more carbon dioxide and 4% to 5% by volume less oxygen than was inhaled.
So about 21% oxygen and almost zero (~400ppm) carbon dioxide by total volume gets inhaled then about 16% oxygen and 5% carbon dioxide by total volume gets exhaled.
Best backdrop ever! I want to float away in it LOL. Thanks for warning us about the dangers of space SciShow Space.
Best,
His voice sounds like a macho narrator for a children's cartoon.
The first and only time I'm sure I will ever hear the phrase" pee debris" yet another reason why I love this awesome Channel
Well some ideas are just piss-poor
If you don't learn from past mistakes, urine trouble.
Carlos Ha ha, good one
Very good explanation for Aerospace
His face at 2:57 (when he is saying "You're dead!") is really creeping me out.
I love this show it actually teaches me shot I don't know. actual things that not many people know or rationalize about. cheers.
So what I learned from this is that in most of the universe whiskers, sleep, and hygiene are some of the most dangerous things. Good to know.
Pee Debris will be my word of the week
there pee came back to haunt them - that's a movie waiting to happen... lol. another fascinating watch as usual. love everything space related :)
I have been begging you guys to do tin whiskers. You finally did! Thank you
I'm pretty sure this is the best channel on the Internet. It's science 😎
number 3 give a whole new meaning to the phase " S**t hits the fan".
Big DANGER traveling near Uranus!
REDUCE THE INTRO VOLUME!
REDUCE THE INTRO VOLUME!
REDUCE THE INTRO VOLUME!
REDUCE THE INTRO VOLUME!
REDUCE THE INTRO VOLUME!
+ozdergecko REDUCE THE INTRO VOLUME!
REDUCE THE INTRO VOLUME!
REDUCE THE INTRO VOLUME!
REDUCE THE INTRO VOLUME!
REDUCE THE INTRO VOLUME!
i'm not peeing. i'm launching satellites into orbit.
The way he said "You're dead." is what got my like.
Good job on finding new dangers instead of using the same old ones like radiation and micro gravity.
Anyone else find the mouth of the breathing animation (2:17-2:46) deeply unsettling?
I pictured sleeping in space without being strap to something. Funny as hell xD
And silver! The effect occurs in silver-plated switches, capacitors and other components in old radios for instance. (I don't think it's very important to most modern electronics though.)
1. Plastics
2. Stop now and then for a breather
3. Install blaster to shoot frozen waste floating around ship. Hours if fun.
I saw the thumbnail and instantly new tin whiskers!! I hated those things. Also, did you know about the pee-sicle that froze to the size of one of the orbiters and they had to use the Canadian arm to get it off?
PLs make one about dangers of deep space travel. Such as with theoretical faster than light travel.
I wonder if the manufacturers of electronics waterproofing solutions could get into this area. One coating to stop moisture damage and these whiskers? Cool video anyway, I had never heard of this before.
pee bullets, LOL shit! XD
+sinephase Imagine turd cannons
+Zero For Conduct Imagine shit balls instead of spit balls.
+Zero For Conduct oh lawd poo would be catastrophic! CATACLYSMIC EVEN!
Why this whiskering thing feels so terrifying? My life just became more uncertain suddenly.
I don't get why people get so upset over drinking recycled pee.
Over the course of several million years, at least one living being pissed out a portion of the water you drink daily.
3:57 I find it funny that he got that glass of water for that one 3 second scene.
This guy must get into voice acting.
"Frozen pee crystals can destroy satellites.". Greatest thing I've heard all day.
Wow, Bear Grylls would make a good astronaut.
Yer the mannn :D Always hosting the exciting episodes! Keep it up
Expected 2 of those 3 dangers. Didn't know about tin whiskers. You forgot about the ancient cosmic horrors like the Space Leviathan. I guess those are somewhat expected though.
The eye issues is a show stopper for mars and a moon base. And the sharp toxic soils
Brings new meaning to the word "tinkle".
Tin whiskers, death carbon bubbles and then Pee meteors. Great. Keep it coming, space. Bring it on.
Aside from tin whiskers, why wouldn't you put a protective coating on electronics designed for space? Stuff floats around, so if a simple coating can stop other stuff touching bare metal I don't see a down side.
Big props to space travelers!
You forgotten one very important point on unexpected danger in space travel. And that is human himself.
Being cramped in a small area, with nothing better to do can change a person psychology and makes him crazy and do dangerous stuffs that can kill everyone on board e.g. via moral hazards, becoming more careless etc.
Spacesomnia is going to be a big business then, if we ever commit fully to space exploration.
When he said it vaporizes urine I thought he said vaporizes Uranus and I was totally confused and at the same time very pleased and immediately started thinking of Star Trek
Actually, solar panels (silicon mono or polycrystalline) have a natural degradation that comes from using them as intended. This can be seen on the ground. Frozen pee micro hail may or may not play a significant role, but the hard radiation above the bulk of the atmosphere sure does not help with technical degradation by design.
If there is a CO2 build up would you not wake up gasping for air since CO2 concentration is what triggers your need to breathe?
+noodles6669 I'm not an expert but people sometimes stop breathing in their sleep and don't immediately wake up.
+Ross Armstrong Sleep apnea, but that may also extend to a lack of oxygen, but you're correct. Plus, even if someone DID wake up from lack of oxygen, that would leave the astronauts unable to get enough sleep to be alert and focused for their work.
+Ross Armstrong
They do wake up from it though which is why sleep apnea ruins your sleep.
+Tricell CEO
Your body has no mechanism of detecting a lack of oxygen. Also, by the time you've depleted the oxygen in your bloodstream or the air you breathe enough to be dangerous, you've produced so much CO2 that you've long been dead from that.
I remember hearing a story about a chipped piece of paint putting a crack in a bay window in space. Is this true?
Most likely, as the severe cold of the vacuum of space will freeze into that crack, make it expand, and crack it. If it were a shuttle or a pod, then re-entry would be just a massive fireball of death.
Yup, I used to have a photo of it... it went through 3 layers of glass (the windows had something like 10 layers of glass in them)
this video made me scared to breathe.
I guessed two of the three
Nice
+Fuzzy Puppet pics or it didn't happen... :P
Couldn't make it more than a minute without being completely bored.
The greatest danger that I see, are those planned 6 people going to Mars for 6 - 9 months in a tin can that measure 10' x 20'. That is a recipe for a new 'Lord of The Flies ' encounter! . JMO
2:45 I doubt this would be harmful unless the entire cabin was full of CO2. CO2 has a rather powerful physiological effect on you. As CO2 levels in the blood increase it triggers the breathing reflex. This is why humans usually can't hold their breath as a method of suicide. This reflex is so strong it will even take place under water, even though this will probably kill you.
If breathing doesn't decrease the level of CO2 you start to feel panicky this feeling will increase rapidly until you find fresh air or until you die.
Most likely a person sleeping in Zero G would wake up long before you would die this way.
Ha, Tin Whiskers is one of the big name local microbrewers here in MN.
lol "Tin Whiskers" is also a local brew in my area. I wonder if they know about this...
tin whiskers in electronics are easily avoided by using lead based alloys in the solder. but we're too concerned about parents who let children chew on circuit boards (wtf?) to allow lead in our solders.
How can they be unexpected when they were expected enough to make a video about them?
+Awesomeness Hippopotamus Unexpected is in the scientists didn't think of such dangers or thought them impossible. The video is due to, well, let's just say they learnt it the hard way and now they know.
space debris, space dust and cometery dust are the biggest problems when flying in space... the ship cand get damaged by these tiny rocks...
Simply amazing!!
Why am i getting this recommended now? This must be foreshadowing
Is it possible to travel to another galaxy?
I heard that we have a lot more influence of dark mater within galaxy.
I mean theoretically - is there some obstacles and danger in space between galaxies?
Will not our spacecraft decay on molecules, and lost its stability beyond galaxy's boundaries?
Even at the speed of light, it would take hundreds of lifetimes to get to our nearest galaxy. Dematerializing is a meh, as I think of it as being sucked into a black hole, or at least the stretching.
And yes, there are oh, so, very large threats in space, even a small speck of dust tapping your ship will equal 9 shotgun blasts.
Very informative, my only critique is that the video had way too many cuts.
tin whiskers are a thing! working on electronics often requires conformal coating on everything to protect against it
Conformal coatings don't really solve the problem tin whiskers are atomically sharp and grow right through like a bamboo shoot through a concrete sidewalk.
So farts in space REALLY linger..
fart bubble is the worst
and don't light a match.
+KiddsockTV But you can escape the bubble at least D:
+KiddsockTV Did you know that NASA has a guy hired just to smell things going to the ISS and stuff, because smells very much linger around. Wonder how they deal with the farts tho.
Didn't Mir collide with a restock vessel, that damaged its solar panels and caused a fire. Would that also account for a 40% reduction.
Tin, lead, cadmium, indium, zinc, gallium, rubidium, cesium, sodium, francium, potassium, and lithium have low melting points
3:58 He needs to take a sip.
He's back
I don't quite buy that one would die from CO2 asphyxiation while asleep. While it is true that at levels of 8% will cause death from asphyxiation, it is also true that it is the level of CO2 in your bloodstream that regulates how fast you breathe. As levels of CO2 build up, your bodies regulatory system makes you breathe faster. Which is why anyone performing an active activity like running or swimming, will increase their breathing. Often to the point of panting. My point is, even in sleep if your CO2 blood levels increased to the point of near asphyxiation you would be awaken by the feeling of not being able to breathe!
Heard "Death bubble", thought Skulduggery Pleasant
Welcome to Mir!
Sorry for the dim lighting, we used to be able to turn the lights on when the solar panels worked, but you know... now we're covered in pee impact craters.
I really want to push that button