How Do Light Bulbs Work? | Earth Science
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- Опубликовано: 31 окт 2013
- James May explains one of the most important inventions to modern lift: the lightbulb.
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I like how Thomas Edison is defined as "not-british"
👍
you mean Non-Inventor
You have to admire how the British always bend the truth in their favor, too.
random guy bruh he invented direct current
Why are people judging him? He is a good inventor that discovered many new things no one has every discovered
"... who was British; and by Thomas Edison, who wasn't." lol
an Inventor
skimlines I
@Michael no actually. The truth that no one is willing to accept is that I invented light bulbs. Idk why people have the urge to claim other people’s achievements for themselves...
Got me laughing so much 😅😅you are either of British nation or you are not of nation 😂😂😂
Frrrrrr 😂😂😂
Lightbulbs work by sucking the dark out of the room.
TheBaconWizard This comment, i like it.
piss off XD
. Hhcc
"...By Joseph Swan who was British..and Thomas Edision, who wasnt"....Lol this man is hysterical
It's always interesting when James answers questions. If only he was a teacher at my old school, I would have got much better grades faster.
I'd like to see a video on how magnets work, if you guys haven't already made one. I know James May could explain in a way I'll finally understand, as only he can.
Thanks for spreading some light on the subject. I found this to be very illuminating.
get out of here
@@Silchii yo chill out
You are a bright person
There are about a dozen people who created incadescent light bulbs between 1850 and 1882: James Bowman Lindsay (Scotland), Warren de la Rue (Channel Islands), Frederick de Moleyns (England), John W Starr (US), Jean Eugene Robert-Houdin (France), Alexander Lodygin (Russia then US), Henry Woodward / Mathew Evans (Canada), Swan (England), Edison (US), Hiram S Maxim / William Sawyer (US), Lewis Latimer (US). Tungsten bulbs and inert gas fillings first arrived in 1904 in a Hungarian patent.
This video brightened up my morning.
Light bulbs were such a good idea,they became the symbol for good ideas.
my opinion that the light bulb indeed was an awesome invention was on the basis that you get rid of the need to keep an open flame handy for night time. you then can keep flames exclusively for work like cooking farming sculpting etc. the ease at which light bulbs have given us control of being able to maintain vision at night improved security and more importantly allowed us to exceed our standard sunlight hours exponantially increasing productivity and our sad progress to a life of excess and abundance ever since. the cleverness of its robust simplicity allowed it to be easily mobile or permanantly brilliant. it was also extremely easy to deploy to anywhere in the world. it definitely deserves a more remarkable comment from May.
There is no ban on selling incandescent lights, as such.
What the EU enacted was a law (or a group of laws) about the level of energy efficiency that light bulbs must have (i.e., amount of light produced per amount of energy consumed). And traditional (omnidirectional) tungsten-filament / inert gas incandescent lamps can't reach that level of efficiency.
But the ones with reflectors ("spotlights") or active gases (halogens, mercury vapour, etc.) can reach that efficiency, and are still legal.
Thanks for helping for school 😁👍
Thx
Inspiration will be represented as an incandescent bulb for at least as long as saving is represented by a floppy disk.
When we are heating our homes anyway heat from the bulb is nice. It's a much more pleasant colour spectrum of light than LEDs. We need both for different purposes.
I have to use this for school
great vid
It was that lightbulb moment that 'LED' to today
ahhhhh these punnnssss my physics homework is now iconic.
I like seeing all the very scientific comments in all of these Headsqueeze vids.
Thank
Click on the settings, it's available in a range of settings up to and including 1080p HD
Was having a discussion with my kids on my drive home about how lights work. They didn't believe me, so naturally I enlisted RUclips and to my delight I see May. 3 minutes in I pause to discuss... And they are asleep. All this time I thought Hammond and Clarkson were being unreasonable... But they might be into something.
An electric current is passed through a coil of wire. This produces a magnetic field. Inside the coil is a magnet. When the induced magnetic field interacts with he magnets, the coil will move back and forth depending on the current, voltage and frequency. This movement is transferred to a membrane which vibrates the air. This vibration is sound. Most microphone works the someway, but the movement in the coil crates an electric signal in a wire.
Shops in the UK aren't allowed, by law, to sell the old style light bulb. At least, supermarkets aren't, I'm not sure what the regulations are like for any other shops.
The shirt that the guy is wearing in the video looks nice.
I see James May, I click!
I know I’m a couple of years late but what I would really like to see on this program: how can digital cameras cope with the patterns of James May‘s shirts? Really, it puzzles me.
An A/C voltage changes constantly the same as a Sine wave. In north america the voltage alternates between peaks of 170V and -170V 60 times per second. In something such as a light bulb, it doesn't matter that it alternates as the light output is dependant on the "average" or RMS voltage which is 120V. AC is used more commonly in electrical grids because DC is incapable of using transformers to change the voltage. This is really only a basic explanation though.
No one says light bulb moment, they just use a picture as an idea
There are several different types, but they all do the same basic thing: the screen displays two images recorded from slightly different positions and the glasses make sure that each of your eyes sees only one of them. When your right eye sees an image recorded from a position slightly to the right of the one shown to your left eye, you'll get the impression of depth.
It's not real 3D since you can't change your point of view, but they call it 3D because "stereoscopic" sounds too technical.
His face looks like every 70's British rock guitar players combined together
You're right they haven't banned the manufacture, these are to be exported.
i was talking about incandescents as featured in this video.
There is a ban of selling these in the EU. Although some company's have found a loophole in the new rules so that some incandescents are still available, only marked differently.
But you're right there is no ban on manufacture (yet)
thank you for lightening up my day :D
and the topic was certainly enlightening
I think the light bulb moments will stay even if light bulbs don't. It will be like how we still use the term "filming" when taking videos with a camera but we don't use film in cameras anymore.
AC is Alternating Current and is used for mains electrical power and the current reverses at either 50 times per second in Europe and 60 in the US. You can easily change the voltage of AC power using a transformer, making it the best for mains power. DC, Direct Currant uses lower voltages than AC and is mainly found in batteries (9V, 12V 24V etc..) that have both a negative and positive end, which the electricity can only one way through both ends to provide power to low powered device.
I can’t escape James May everywhere I go I see his face
I want James May to read me bed time stories... his voice is excellent lol
agreed
I'm not sure if this will actually be read by someone on Head Squeeze but if it is, here's my question for James, as a smoker I'm sure he can appreciate this problem.
"Why do lighters with a 'jet' or 'torch' function always seem to break within a few months of purchase, but even cheap ones with a basic standard flame seem to last years or even decades, provided they are refilled, without issue?" The short version would be "Why torch lighters always break".
Thanks if you can answer this!
***** Thanks for the information, I guess its too simple of a problem to devote an entire head squeeze episode too.
Perhaps he could do one in general about 'Why are certain items designed to break?'
An LED can still fairly be called a light bulb. It’s a bulb that emits light, yes technically it isn’t a lightbulb but I don’t think it’s terribly inaccurate to describe it as such.
i knew he'd mention the merc's LED car :p
Why are two small vertical bars used as the "pause" symbol? There's no physical representation for "pause" any more than there is a physical representation for "storing data". They're just concepts, so the important thing is to have a symbol that people won't confuse with other common symbols; what the symbol actually depicts isn't very relevant.
Some applications use a "folder" icon for saving, BTW (which is more confusing than the floppy).
I'd like to see James speak about the Dunning-Kruger effect.
I like his British smile
Smart 🧠
i knew the metal coil made heat but i dident know encasing it in glass makes light
wow
> "Why does hot water freeze faster than cold water?"
For the same reason that pianos aren't subject to the force of gravity.
Thicker filaments require a lot more energy to produce the same amount of light. Even if the bulb lasted 100x times longer (most of them didn't, they actually lasted less, otherwise they would still be around), you'd end up spending a lot more money on your electricity bill.
lmao i gotta do watch james may for homework
The automatic subtitles came on this episode, and they were impossible to read because of James' shirt xD
Please, make one video on why ices and cold stuff seems bluish? Please, May! Tell me on your upcoming videos!
It's subjective. Your brain is comparing it to yellow tungsten bulbs, yellow flames and yellow sunlight. So you associate yellow with warmth and non-yellow with cold.
We'll still have "lightbulb moments" in the lexicon. It will just be one of those things people say but no one knows why. Like saying "bless you" after someone sneezes.
I wonder if we were to make a light bulb filled with inert gas, and then placed under the best vacuum, if it would be any more energy efficient than a standard filled inert gas
how do you work out the force of an object in space?
Mom: what have you learnt today?
Me: **spills out the whole English vocabulary while pointing at a lightbulb**
2019 top gear RIP James may
By switching them on?
no subsrcibe annotations? good job!
"Camera" means "room", too, but nowadays they tend to be a bit smaller than that. ;)
how do you measure the mass of an object in space?
why only 360p ?
Forget bulb, how was your shirt made?
I will have a "James May" moment (more up to date than a light bulb.
It would be pretty cool watching a cartoon 40 years in the future and explaing to.your grand kids what a lightbulb is
Yes, but not to lose heat. Their foot pads can sweat to improve grip, but they don't have enough sweat glands on the rest of their body to make it a viable cooling mechanism (sweat doesn't really work with a thick coat of hair anyway).
Humans' ability to sweat is directly linked to our loss of body hair and was a very important step in our evolution, since it allowed us to keep cool even while running / hunting under direct sunlight, which most animals can't do for long.
Why is the floppy disk still used as the 'Save' symbol?
How many dimensions are there?
He invented the neon lamp
Man, you better wear Batik Shirt, it would be cool. Indonesian Batik! It has cool pattern than you wore. You will be the most awesome people in the universe
The force of an object? What does that mean?
bulb produces light
I love how he identified Joseph Swan as a British and Thomas Edison as Not British.
A good cartoonist wouldn't even need a to draw a light bulb to indicate an idea, they just need to be able to actually tell a story.
Why is there Alternating current? I know what D/C is used for and what it stands for. But what about A/C?
Can't wait to see the new S-Class on Top Gear. I hope James will do that review instead of Jeremy
I don't see why Mercedes is bragging about a car with no bulbs. Ford did that in the 1930s. :) Actually,I think the LEDs are pretty neat. I don't particularly like the light they produce but they are very efficient and last a very long time & that is a win in my book.Like I said,it's not a huge deal but,I don't really like the quality of light LEDs produce but that's because I grew up with bulbs & prefer that light.I find it a little softer.. I would presume it's a non issue for younger people
OH MY GOD, you informed me about a new mercedes, THIS IS TOP GEAR!!
Everyone should get LED lights. The technology has really improved and nowadays they're available in all sorts of colours, ranging from white light to very warm yellow. They're *much* more energy efficient and it saves you in electricity bills noticably!!
Why shouldn't it be possible? It has no moving parts to "wear out", and as long as it's kept on it doesn't suffer much from thermal stress.
Could have gone into a bit more detail about different types of light bulbs (ex., halogen, mercury vapour, etc.).
You still get the basics though
I've actually stockpiled a bunch of 50 and 75 watt bulbs....
The energy efficient ones just don't provide the same light and the rooms feel dim.
I was one of the first people to be like "Oooh new bulbs and they aren't so inefficient" then I found out I can barely read my book properly not to mention they are more expensive.
Until my stockpile is depleted I shall use the old ones.
you might want to think about keeping tubs/buckets/bottles of hot water around. Even a running tap of hot water can quickly heat a room up, extra insulation also helps, nothing fancy just wet some newspaper strips and stick them to the edges of windows. Or... you know... get a job and pay your bills. Which ever works.
Yes, please make a video about LEDs. I would be interested in watching that.
LEDs have little use for most things. I’d love a video on LCDs
Thank you James for the interesting History about how the light bulb was invented and how it evolved. One of the most useful and valuable Inventions that Man has come up with. Human Kind would not exist as we know it without Electricity--back to the near Stone Age.
James, Why are some people picky about the food they eat?
What will Gru say when he has an idea?
If mercedes has no light bulbs but leds, will there be any difference in fuel consumption and some of the energy of the engine goes spinning the spin-around-round-thing that makes the electricity to the car. Leds take less energy so is the resistanse in the spinnie-thing smaller and therefore, more fuel is saved?
Even that style of LED is becoming a thing of the past. Most nowadays are SMD style in the shape of a disk or tiny rectangle. Draw that over your head…..
haha... what was with that intro? :)
Could still call some LED lights light bulbs. It's purely aesthetic but some of the new LEDs are made to look just like the bulbs they'll be replacing.
The problem with LED headlights is that the produce so little heat that they had to inlude a heating system to defrost the headlamps. Ah technology, one step forward and two steps back.
At least two steps back gives us more challenges and great things to discover and achieve!!
I dont know how you would call that 1 step forward and 2 steps back... the advantages outweigh that little problem by miles.
@decenium so truE
Good observation 🤔... The problem here is not the frozen ice, but the range of visible light is limited... So needs to develop such type of led which can penetrate through ice 😀and visible light should be merged in that.
But yes, net energy consumption is lowered by led 😀
Instead of a "light-bulb moment," you'll have "an idea."
Actually in my language we call the light bulb a "heat bulb": žárovka = light bulb, žár = heat
Some might not be aware that the reason the incandescent light bulbs lasted roughly no more than 1000 hours was because of the Phoenix Cartel. Now I'm about to recommend a video to watch which may look as though I'm spamming but I have no affiliation to the makers of the video so it's ok. Look for and watch "the Light Bulb Conspiracy" if you're interested.
Nobody
I will probably watch it... I'm very angry that my two favorite kinds of incandescent light bulbs are hard to get nowadays and basically have to be ordered on line... I can't stand ordering anything on Amazon and making Jeff Bezos rich
Only a deluminator from Harry Potter can do that
From now on I am going to refer to anyone who is not British as not British.
Do the British really think that Joseph Swan invented the light bulb? Wow