Iodine Clock (slow motion) - Periodic Table of Videos
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- Опубликовано: 7 сен 2024
- See the famous Iodine Clock reaction filmed with a high-speed camera. MORE SLOW MOTION VIDEOS HERE: bit.ly/chemslomo
Explained by Professor Martyn Poliakoff. Also featuring Dr Samantha Tang.
More chemistry at www.periodicvid...
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And on Twitter at / periodicvideos
From the School of Chemistry at The University of Nottingham: www.nottingham....
Periodic Videos films are by video journalist Brady Haran: www.bradyharan....
Brady's other channels include:
/ sixtysymbols (Physics and astronomy)
/ numberphile (Numbers and maths)
/ backstagescience (Big science facilities)
/ philosophyfile (Philosophy stuff)
Watch videos about EVERY element: bit.ly/VT9nNZ
Reactions filmed with a Phantom Miro. We used this: www.visionresea...
Special thanks to Destin from Smarter Every Day for helping us out: / smartereveryday
Music courtesy of Alan Stewart - / alankey86
Can we take a second to savor the image of the Professor putting on chemical magic shows for kids?
imagining this hair being squashed? No thanks!
This guy looks like science.
He looks like Albert Einstein.
Jolly Holly he is Albert Einstein and Nicola tesla combined in looks
I swear I see the same comment on every video
Somebody already commented that
He's a wonderful person :)
I absolutely love Sam's reaction to this experiment at around the five minute mark! I can't make out what she's saying but it's adorable nonetheless! 😊💜
kingofalldoughboys "oowh that's so cool" after watching the slow motion footage :)
+kingofalldoughboys "oh my days, that's so cool"
That has to be near the top of my list of cutest things on RUclips. Which is impressive considering that RUclips is more so less built out of kitten videos.
I love the Lab assistant's reaction to the slow motion video and then Destin's reaction to HER reaction.
Science, as always, is cool.
Alex Murdoch That's no lab assistant, that's Dr. Samantha Tang.
That is not a lab assistant, that is the public awareness scientist, Samantha Tang, PhD.
Kind of interesting I think that you can tell how long the reaction takes from the high speed video by counting how many times the light flickers during the reaction. The AC cycle is 1/50 second, it flickers twice per cycle, so each flicker is 1/100 second. It flickers about 20 times during the reaction, so it takes about 1/5 of a second.
Nerd
@@Meminjoare you mad because you're dumber?
I've found my absolute favorite reactions of all time. The color change, and Sam's childlike wonder at the slow motion footage. I can't stop rewatching it!
Destin is on here???? Whaaaaaaaaaa
As soon as I saw the reaction for the first time I wondered if Destin had slow-mo'd it. Then I watched this video and was stoked to see him in it.
Dr. Tang's excitement on seeing the slow mo of the reaction reminded me of the intro to these vids when Destin was so excited to meet Professor Poliakoff that he was giggling hysterically.
Wow, one of my science teachers in middle school used to show us your videos all the time. This is like a trip in a time machine
I'm really enjoying the use of the high speed camera for these old school reactions. It really is a new perspective
This is absolutely beautiful. The swirls that the solution makes when changing color are amazing.
Science is always COOL!
Awesome
Only with endothermic reactions, though.
+Noel Goetowski what do mean?
electricrainbow Endothermic reactions, as opposed to exothermic, absorb heat, thus making the product of the reaction cooler.
+Noel Goetowski ?
The hand held and heavy handed zoom & focus is Brady's style. I like it, keeps the eyes busy.
I was going to tag SmarterEveryDay in this video when I saw the high speed camera. Then, he is in the video
4:52 That was one of the BEST "reactions" I've seen in this channel!! That girl REALLY loves chemistry!
Anyone else watching this in 2024???
I just noticed Destin from smarter everyday!!
4:53 Sam's reaction is absolutely adorable!
This is probably the coolest periodicvideo ever!
It is very nice to see different, well known people from youtube collaborate.
I have seen that reaction many times, but great seeing it in slow motion, especially seeing her reaction to it at 4:52!
That is one of the most amazing pieces of high-speed film I've ever seen.
Hey Brady! Here's a BASIC chemistry question that I'd love to see it addressed in a video. To what degree a chemist can predict (on paper) what would happen in chemical reactions? Are there specific properties of the atoms/molecules that, when combined with others, make the mix explode, gain volume, evaporate, dissolve one element, and so on?
Fluid dynamics right there. Taking that class right now.
The slowmo video is really cool... watching the BEST GEEKOUT EVER over it was the icing on the cake!
As far as I understand it, that's what this reaction already does. It converts the I back and forth between two reactions using bisulfite. No entropy laws are broken because the "external" energy source that allows the reaction to go both ways (which they normally can't) is your bisulfite, which is consumed in the process.
We did a similar sort of reaction in my AP chemistry class- we were measuring vitamin C concentrations in different juices and used an iodide-iodine-iodate combination to remove the vitamin C from the juice, turning the solution black/blue. VERY cool effect, and even better in slow motion!
That was and is the best experiment/reaction in slow mo there is and so much more interesting.
One of my favourite reactions! I am doing it this Friday with a class of 16 year olds... I can't wait for their reaction!
She nerds out, and it's adorable. I love to see that kind of excitment in science.
Yes it is! Look up some other periodic element videos, there is one where he meets the professor!
My friends and i done a science presentation in July and this was one of the reactions
Learning about Chemical equilibrium and phase changes in University, and then watching this video really demonstrates what chemistry is all about!
Wow that gave me chills! So beautiful 😭
The reason the light flickers is because the lights were plugged into the main power grid, which transmits power in alternating current. This means that the power rapidly switches many times per second. Normally this is so fast that your eye doesn't notice the flickering of the lights, but use a high speed camera and you are actually seeing the power go off and on
love how that chemical reaction causes a logo watermark to appear on the screen...
Lol its so if anyone steals the footage they will be led back here
It's been a while since high-school but I can't recall that I remember the stripes in the liquid before it changes the color. In the first reaction on normal speed you clearly see the stripes. I guess it's due to camera recording it. The slo-mo clearly shows the reaction is exponential.
Thats got to be the best reaction to a reaction ever!!!!!
At about 4:45-ish, I blinked and actually missed the whole chemical reaction. I love this.
Reactions at his kids parties... man wish he was my dad! True Hero!
Proffessor- yesterday we were learning about the principles of green chemistry at school (I do A-level chem) and I was grinning from ear to ear the whole time thinking of you campaigning! :)
her reaction to seeing the slow motion gave me a giant smile!
Dr Tang instantly gets +5 awesomeness for that reaction. Now that's chemistry
All of these videos are just so interesting.
Whatever camera you use, when doing high speed shots it's best to light what you're filming well because of how little time the shutter is open for each frame. I have used a Phantom Flex a few times, when we do; we use massive reflectors and high power lights.
Nice for you that you enjoy getting the first comment on a video. I, on the other hand, prefer to enjoy the actual content of the video before commenting.
I never thought I'd be glued to a scientific video series.
But wow. Your videos are fantastic. And now witht he addition of the high speed video....Suddenly I want to become a chemist.
If you're ever in the Edmonton AB area look me up.
Coffee or lunch or something.
i did an experiment on Iodine Clocks for my A2 coursework (reaction kinetics). its both relaxing yet tense, you are looking at a beaker for minutes on end, but if you look away for one second and it finishes the reaction, then you have to repeat the experiment :P
Gav from the Slowmoguys lives in the US and works at Roosterteeth (check out their Achievement Hunter vids and the RT podcast to see Gav). Dan still lives in the UK and they filmed a bunch of videos before Gav went to the US and then some more when Gav came back to the UK for a visit. They are planning on filming some in the US relatively soon when Dan goes for a visit.
Also awsome vid Brady.
this man is single handedly curing my depression
The video is impressive! Thanks Prof and your team.
I can't understand what Dr. Tang is saying but it's impossible not to feel her excitement.
I love Sam's enthusiasm.
I got to do this reaction in high school years ago! It was my favorite by far. Awesome to see it through high speed.
I watched and replayed the reaction part of the video several times. I never even saw there was a watermark until I read the comments.
I love the professors energetic hand gestures :D
Is that Destin at 4:53?
Yes, he's on the show to provide them with a high speed camera
if they were different densities, an inert liquid could be added between, and so an agitation would allow small amounts to mix
I love this reaction. I performed a version of this as a lab for PChem. I agree with the Professor that the concentrations of the various reagents would be different depending on how you added them together in the beaker. Perhaps to test this hypothesis you might try mixing the solution with a stir bar while adding in the reagents and continue stirring the solution after the reagents have been added. With proper mixing, the whole solution should be able to turn blue all at once.
Would be super if the processes could be filmed in slo-mo w/ macro lens for intimate close-up. I understand that the videos are already filmed but for future videos think about this, Brady. Thnx!
Samantha Tangs reaction is priceless, a true geekout if ever there was one =D
I actually did this reaction yesterday, but with mercuric chloride added to give an orange solution with iodide before it turning black. It's known as the Old Nassau reaction.
Nice timing of the professor's snap at 4:42.
Briggs-Rauscher is an extension of this so that it oscillates from colorless to dark blue to light yellow and repeats continually. I love chemical oscillators
It's actually a really beautiful reaction in slow motion.
Yep, Destin came over to see Brady and the gang and brought his high-speed camera. I presume Brady is sitting on a whole heap of these high-speed videos that he's going to show us in the coming weeks and months.
I hear this; "Oh my daiis thats so good! Oooh thats so good!"
By far one of my favorite reactions in the series!
I started watching periodic table of video's ages ago and found the concept of learning through youtube appealing, so since then I've looked into vsauce, scishow, slowmo guys, and smarter every day, so awesome to see these channels together.
i love these videos but sometimes i feel totally lost. i wish i remembered more of my chemistry classes in high school 25 years ago...
To coop with Destin was really an absolutely genius idea!
I like these slo mo movies. Would be nice having a stop watch in the background to show the time elapsed...
really loving these high speed camera videos xD keep it up guys
i like it when the professor has a lesson at the end
Awesome how excited the woman is when she sees the slow-motion!!! :)
What would it look like if the two solutions were in the beaker with a divider and the divider was removed (to minimize mixing randomly)?
I love the look on Destin's face at 4:56!
Iodate? Iodine? Iodide? .. Io-don't know what's going on anymore but this is awesome.
This is amazing! I didn't think I could love your videos any more than I do but introducing slow motion to the reactions makes me so excited I don't know what to do with myself. Brady, you and Destin are a RUclips power duo.
Cool to see Destin from Smarter Every Day cameo toward the end!
I think is at about 1000 FPS. Check the first slow motion video, they actually talk a bit about the company that makes these cameras so you can link yourself to the exact same product.
We did it once in a hurry in some slightly dirty instruments, and with very diluated solutions. It somehow happened in slow motions, we could see this with the naked eye.
Watching these makes me feel Smarter every day ;-)
I like how well you explain the reaction in this vid
Love to see her this excited about chemistry!
There is a complete separate video that explains the camera and frame rate. I think it is somewhere around 3,000 FPS...or something equally as outrageous.
It's a great intro video explaining it all...basically.
Brady i have to say this is possibly the best video you've produced!
Oh man, I'm so glad I am subscribed to this channel... All the information I already got by watching these videos, and now they are showing reactions and explosions in slow motion... Amazing, so pretty!
I love how she just burst with excitement just watching them chemicals change colors
I really think someone with a PhD in chemistry and a bagillion dollar high speed camera could put the world's greatest CGI artists to shame in the world of visual effects.
what
true... lol I actually would love to see a movie like that
Bagillion. Ahhh!!!
I love that there is standing a book behind him which appears to be a "how to grow a affro book"?
There is a visible pulsation of light which, I suppose is at 50Hz -> distance between two pulse peaks is 0.02 seconds.
*I counted 22 pulses* -> [reaction time]=22*0.02=0.44(seconds).
You should film this reaction in slow motion while its mixing with magnetic stirrer, so chemicals are mixed closer to perfectly! :)
4:54 - We discover that Sam is a real chemist, and will be for life.
best chemistry lesson ever!
Sam 's reacton to the video is priceless :D
"Nowadays it wouldn't be allowed..." How Sad!
I still remember my old Gilbert chemistry set and how playing with it drew me in to a lifelong love of science and learning.
The whole video is great, but 4:58 made my day, she is adorable!
Destin is my hero, and he pops up in the coolest places!
Absolutely amazing.
you should have poured it carefully (eg. over a spoon) so that it would have a more distinct spread. I think that would be pretty cool to see in slow motion