Science Experiments with Potassium Permanganate | Szydlo's At Home Science

2024 ж. 15 Мам.
75 835 Рет қаралды

Andrew takes us on a journey to London's Shepherd's Bush Market in 1960, exploring the splendid chemistry of potassium permanganate. Along the way, he will explore redox reactions, colour changes and even the “devil’s element”, phosphorus.
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Contents:
0:00 Introduction and a trip to Shepherd's Bush Market
7:10 Intro to Potassium Permanganate
14:50 Dilutions and Avogadro's number
17:00 The chemistry of manganese
24:25 Complex ions
31:40 Oxygen and combustion
40:00 Phosphorus
Andrew Szydlo is a chemist and secondary school teacher at Highgate School, well-loved by pupils and Ri attendees alike.
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Пікірлер
  • Oh gosh, oh golly, are we excited! While we have been away from our building for three months now, our friend, the most wonderful chemistry teacher Andrew Szydlo, has sent us a gift like no other - an entire series of chemistry videos, filmed in his home and exploring concepts such as the chemistry of coins and photography, how a chainsaw works and even how to fix a leaking tap. We're so excited to watch these and to share them with you!

    @TheRoyalInstitution@TheRoyalInstitution3 жыл бұрын
    • Now i understand why Andrew is so great on stage.. i think he is that person all the time.. Awesome, he is such a good communicator and the passion for the subject is almost touchable, even thru the screen.

      @squidcaps4308@squidcaps43083 жыл бұрын
    • What a wonderful surprise, this is much appreciated! I‘m looking forward to watch all of them.

      @holgertd4464@holgertd44643 жыл бұрын
    • He loves what he does, and he does it well! Thank you for the videos! 😃

      @Willam_J@Willam_J3 жыл бұрын
    • I'll be watching the series as quickly as uploads and my constitution allows.

      @JohnLeePettimoreIII@JohnLeePettimoreIII3 жыл бұрын
    • I like the idea that Andrew just got so bored at home he made these videos with no prompt and sent it to the RI like "Here. Post this"

      @cameronmcallister7606@cameronmcallister76063 жыл бұрын
  • This man was my Chemistry teacher. He was also ran the photography club, the automobile society, the beekeeping club, and was co-leader of a club called "Operatic society" which was in actual fact a chamber orchestra/fine dining club, where he bought nice cheeses for us to eat and played the viola. Man is a force of nature.

    @skaldicofmaldon2332@skaldicofmaldon23323 жыл бұрын
    • Oh my! I might just have to write him a fan letter!

      @charliedelacey8856@charliedelacey88565 ай бұрын
    • ​@@charliedelacey8856 your lucky to have had him.

      @cjod33@cjod332 ай бұрын
  • good to see this man healthy and still kicking ass.

    @BattleBunny1979@BattleBunny19793 жыл бұрын
  • MASTER SZYDLO IS BACK! THE LORD OF FIIIREEEH!

    @martinschultz3441@martinschultz34413 жыл бұрын
  • His storytelling is just as effervescent and effusive as the actual chemistry

    @michaelsinghpurewal@michaelsinghpurewal3 жыл бұрын
    • I hate chemistry and even I got hooked.

      @TheAcujlGamer@TheAcujlGamer3 жыл бұрын
  • Such a wonderful person. Can do his childhood hobby as profession, highly educated outside his profession, he is a talented musician, has a passion not just to entertain, but to teach too. And he is such a nice person, constantly thanking his assistants, always being polite. He might be elder in his body, but has a youthful mind. And his overall clumsyness makes him charming. I wish I had someone like him tech me chemistry when I was a child. I'm sure I would have learned to love chemistry more that way.

    @villie86@villie863 жыл бұрын
  • I could watch him all day! It would be a privilege to meet him one day as I am just as passionate about science as he is. He is an absolute GENIUS as well as an intertainer! He is just amazing, may God keep him well!

    @daphnefernandez219@daphnefernandez219 Жыл бұрын
  • His story about the snake oil salesman never gets old ❤️ ACIDS. *BURN*.

    @Danirijeka@Danirijeka3 жыл бұрын
    • I swear he said they were purple last time though.

      @annepearn4545@annepearn45452 жыл бұрын
  • Szydlo is my favourite professor, I can never get enough of him

    @ViiKing_@ViiKing_3 жыл бұрын
  • I really enjoyed Andrew's demonstrations. I'm 73 now and I can relate to him receiving his chemistry set. When I was eleven years old I went to my senior school and this was my introduction to science. My science teacher was a Mr B Littleproud and I was hooked so for the following Christmas I crazed my parents for a chemistry set. The best present ever but it didn't stop there because every birthday and Christmas I asked for more chemistry apparatus. I remember they used to send off to Birmingham for most of the glassware and I believe I got the retort stands from Griffin & George in Wembley. In the sixties there were many independent chemist shops where you could buy the chemicals from. I feel sorry for young budding chemists today with all the restrictions in place on the purchase of many of the chemicals we used to buy. I would dearly love to show my grandson some of the experiments I used to do. By the way, I was lucky in that my grandmother gave me a corner of her kitchen to set up my laboratory. She had town gas so I could have a Bunsen burner to heat up some of the reactions has required. It's a great pity that our society has changed the way it has and so many of our freedoms have been lost.

    @thomasperks8640@thomasperks86403 жыл бұрын
  • Dr. Szydlo is a national treasure of the United Kingdom. Oscar too.

    @Archangelm127@Archangelm1273 жыл бұрын
  • It is the chemistry maestro Andrew Szydlo. I know that I will be in for some good 'edutainment', so I've liked the video before even watching it!

    @garycard1456@garycard14563 жыл бұрын
    • x2 me too

      @XipeAyotl@XipeAyotl3 жыл бұрын
  • I love when Prof Szydlo blows stuff up

    @theanteaterparadox344@theanteaterparadox3443 жыл бұрын
  • You can never get enough of Prof Andrew Szydlo's teaching and his teaching way!

    @nickname7152@nickname71523 жыл бұрын
  • I am raising my daughter in the vain hope that she'll get into computer science, like her dad... unfortunately I've introduced her to the (admittedly amazing) Andrew Szydlo.... looks like Santa's bringing a chemistry set for Christmas! Keep up the good work, Mr Szydlo!

    @tikkiwich9700@tikkiwich97003 жыл бұрын
  • There is so much to learn about Prof. Szydlo's expressive way of doing his introductions! Thank you!

    @fiegenfiegen@fiegenfiegen3 жыл бұрын
  • Never before have I seen such an energetic performance for chemistry. Thank you for sharing your personal history with the science of chemistry. Much appreciated.

    @gzpo@gzpo3 жыл бұрын
  • Yessss! I’ve been waiting for another video from dear Andrew. I’m a Science teacher and I absolutely love him!

    @mereblue@mereblue3 жыл бұрын
  • First time i have seen this guy and I absolutely love his style and knowledge. 😎

    @lasersimonjohnson@lasersimonjohnson3 жыл бұрын
    • Watch his lectures on fire and explosions.

      @Arnold.J.Rimmer@Arnold.J.Rimmer3 жыл бұрын
    • @@Arnold.J.Rimmer Surely you mean FIYAH!

      @JivanPal@JivanPal10 ай бұрын
  • Am a high school chemistry teacher. Prof. Szydlo you are certainly my mentor. My chemistry godfather

    @kofimarti@kofimarti Жыл бұрын
  • Nothing compares to the masterful delivery of Chemistry from Andrew! An absolute pleasure to watch 👍

    @andrestrujado@andrestrujado3 жыл бұрын
  • Extremely interesting and engaging! I love Mr. Szydlo's videos; they're always packed full with chemistry gems :D also, thank you Oscar, great camera work :)

    @zestyammar1973@zestyammar19733 жыл бұрын
  • Haha, my brother and I used to play this game that we called What Burns. Any time our parents would fall asleep, we'd get the box of matches and a spoon from the kitchen and go into the bathroom to add various chemicals to the spoon and then try to ignite them withe the matches. We always opened the window to the bathroom and, if anything smelled bad, we'd put any resulting fire out, run out of the bathroom, close the door, and come back when all the foul gases had gone out the window. It was truly fascinating.

    @whoever6458@whoever64582 жыл бұрын
  • An inspiring teacher - wish they were all like him. I loved his lesson/demo

    @mikepetersnz@mikepetersnz3 жыл бұрын
  • Andrew, Thank you for perfecting your special gift. This is a very tough day for me and I somehow came to this link and it brought a smile to my face. I can only imagine how encouraging you must be to Young students. I'm sure there are several who you've passed on your love for chemistry. For which the world is eternally grateful.

    @marcstanley6437@marcstanley64373 жыл бұрын
  • Got to meet Andrew at UlerSTEM last November. It was a real pleasure to talk with him after his show. Thouroughly enjoyed this video.

    @tinderboxcreations@tinderboxcreations3 жыл бұрын
  • Ive heard that opening on so many of his videos, but by gum i sure do love it.

    @drhmufti@drhmufti3 жыл бұрын
  • Oh yes, a fresh Szydlo video... *MUST WATCH*

    @Arsenic71@Arsenic713 жыл бұрын
  • Only 9:30 in and I've already thumbed up the video. Andrew's enthusiasm is contagious. His ability to talk for long periods without many delays maximizes information transfer; I think I would have run out of things to say long before that point.

    @Kargoneth@Kargoneth3 жыл бұрын
  • I love the scientific rigour of him, even on a casual scenario. Going to use the flask in 5 second, but the lid always goes on!

    @CT7ALW@CT7ALW3 жыл бұрын
  • I don't have words intensive enough to express my gratitude. This video has inspired me to study equilibrium, acid/base chemistry, and electrochemistry! It is so fascinating to think of the relationship between lewis bases and reducing agents.

    @VyvienneEaux@VyvienneEaux3 жыл бұрын
  • This has got to be my favorite teacher ever! It is too bad I will never get to meet him in person. I wish you nothing but the best sir!

    @jonross377@jonross3772 жыл бұрын
  • Thank you very good class. Chemistry is amazing. I remember organic chemistry labs were very stressful. One lab involved turning oil of wintergreen into acetylsalicylic acid. That was over 30 years ago. Organic chemistry labs often ended with products that were a crystalline powder which was then tapped into a tiny glass tube (pipette) and put in a gallencamp, and heated until the starting and ending melting points were found. Those two numbers when looked up in thick book gave the name of the organic. Amazing.

    @McLKeith@McLKeith3 жыл бұрын
    • Now /that/ method of testing is one I've never heard of before, even in my early '80s chem lab schooling; I'd imagine that it would've made things much more interesting for the students (& maybe teachers!)

      @snafu2350@snafu23503 жыл бұрын
  • I wish he was my teacher when I was at school. Lessons would never have been boring.

    @webwarlock72@webwarlock72 Жыл бұрын
  • 15:45 * 8 billion is 8 thousand million

    @caballeroPL@caballeroPL3 жыл бұрын
    • @@Jimbojo Thats correct, but then again neither of them are 10^7. Ten thousand million (rounded up world population) would be 10^10 and 10 million million (10 old style billion) would be 10^13. Still a lovely video. PS In germany that older british style is still in use. "Billion" would be a million million while "Milliarde" is a thousand million

      @TokranInami@TokranInami3 жыл бұрын
    • @@TokranInami But how many is a Brazilian? (sorry, couldn't resist)

      @grayaj23@grayaj233 жыл бұрын
    • Why do so many otherwise brilliant British people cling to this idea that a billion is a "million million"?

      @CommonSensePeople@CommonSensePeople3 жыл бұрын
    • @@CommonSensePeople In Germany this is absolutely correct: Million: 1 000 000 Milliarde: 1 000 000 000 Billion: 1 000 000 000 000 Billiarde: 1 000 000 000 000 000 Trillion: 1 000 000 000 000 000 000 Trilliarde: 1 000 000 000 000 000 000 000

      @homberger-it@homberger-it3 жыл бұрын
    • @@TokranInami He garbled the math a few times in his explanation, but fortunately, in the end his answer of 1,000 world populations is correct.

      @jmmahony@jmmahony3 жыл бұрын
  • Fantastic 👍🏼 thank you for taking the time to do this video.

    @RockStarTomUK@RockStarTomUK3 жыл бұрын
  • This man is excellent at story telling, excellent at public speaking and hooking the audience. Very entertaining, I want to learn from him, AMAZING TEACHER. Love this

    @theinternaut1991@theinternaut19913 жыл бұрын
  • Love the passion for science.

    @myopenmind527@myopenmind5273 жыл бұрын
  • Marvelous demonstration and wonderful enthusiasm.

    @clintongryke6887@clintongryke68873 жыл бұрын
  • 3:38 HE PUT THE FIRE OUT WITH THE POWER OF HIS MIND

    @Asdayasman@Asdayasman3 жыл бұрын
  • I didn't know i liked chemistry until i saw this guy. Now i can't stop watching videos about it.

    @GrizzlyMint666@GrizzlyMint6663 жыл бұрын
  • Thank you for teaching us . You made a big difference in my life.

    @jasonb4370@jasonb43703 жыл бұрын
  • I love this guy! Fantastic stuff. Thank you!

    @JJackONeill@JJackONeill3 жыл бұрын
  • Thank you so much for this video series. Love it! Your teaching style is so retro and reminds me of my whacky A Level lecturer back in the day. Great way to remember “stuff’. This one in particular is Outstanding as I remember writing “Potassium Permanganate” for any substance that I couldn’t identify in my A level Chemistry exam. Happy Days :) Keep up the good work and keep it old skool.

    @dinodinoulis923@dinodinoulis9233 жыл бұрын
  • 21:05 Andrew is soo good to do this things that he wanted to make this a true live show by adding the classic phone ring that you hear in every live show!

    @GioeleGuenzi@GioeleGuenzi2 жыл бұрын
  • watched whole video. Instant Subscriber. What an awesome dude.

    @randomhuman1965@randomhuman19653 жыл бұрын
  • I'll admit, my fascination with chemistry began wondering how to make things pop and burn. What a wonderful introduction!

    @BlackWolf42-@BlackWolf42-3 жыл бұрын
    • Likewise😁. Started out taking apart fireworks and mixing and matching, then went to potato guns for a while, then after that started making explosives in my teens (yeah nah I don't recommend that these days😂), and I've been interested in chemistry ever since. Nile Red and Nurd rage really fanned the flames though in the last couple years, I've since equipped myself with loads of glassware and equipment. Chemistry rocks!

      @TheExplosiveGuy@TheExplosiveGuy3 жыл бұрын
  • If my high school chemistry teachers taught like this gentleman, I would definitely have paid more attention.

    @MrPhifty@MrPhifty3 жыл бұрын
  • I loved that he has his childhood treasures

    @clarquent@clarquent3 жыл бұрын
  • The painting fellow was Nic Flamel at heart, bless him

    @evolvedcopper2205@evolvedcopper22053 жыл бұрын
  • Love your work Sir , I was 4 years old in 1960 , wish I'd had a Chemistry Teacher with your enthusiasm when I was in High School , nevertheless my interest in the subject you present with such gusto hasnt deminished

    @aussieaeromodeler@aussieaeromodeler3 жыл бұрын
  • Outstanding!!! As usual ;-) Love the good Dr!!! Would love to hear the history of that drill press behind him... Bet it could tell some tales if it could speak!!!

    @n7565j@n7565j3 жыл бұрын
  • I had much the same childhood experience as Andrew (except for the snake oil vendor). My parents got me a chemistry set and somehow I found some potassium permanganate. I have no idea why, but one day I decided to make a small pile of permanganate and put a few drops of glycerin on top of the pile. After a few moments it burst into flame! Cool! Much like Andrew's experience. Years later I did a PhD in ... permanganate chemistry. Keep up the wonderful chemistry and physics videos.

    @13amplifiers@13amplifiers3 жыл бұрын
  • Love the giant flask. It proves that size does matter!

    @DrQuadrivium@DrQuadrivium3 жыл бұрын
  • With a chemistry minor and geology major the experiment/demonstration was just great but the story its equal. Cheers, Mark

    @markbell9742@markbell97423 жыл бұрын
  • every time I see Andrew showing the experiment from Shepherd's Bush, I'm still drinking his words... I'm another pyromaniac fanatic Sir

    @Jethro.Maloku-le.Rey.Kalsitran@Jethro.Maloku-le.Rey.Kalsitran3 жыл бұрын
  • OMG! HE IS BACK!!!!1111 So glad to see that you guys are ok!

    @TheSkogemann@TheSkogemann3 жыл бұрын
  • I wish I had had a chemistry teacher like him :)

    @Telonicus@Telonicus3 жыл бұрын
  • I believe I have seen this bit before... forget where. Enjoyed it all over again tonight.

    @roderickwhitehead@roderickwhitehead3 жыл бұрын
    • About the magic medicine man? I'm pretty sure he brought that up in one of the RI lectures at the normal building, I think it was titled something like "the magic of chemistry".

      @extrastuff9463@extrastuff94633 жыл бұрын
  • He borrowed the hose from his Triumph. Lol that is something I would do. That's why I love his videos.

    @rigel2112@rigel21122 жыл бұрын
  • As a Kenyan every time someone uses "mambo jambo" in an English statement with connotations of confusion I marvel at how language grows from random potentially misunderstood interactions.

    @PecPur@PecPur9 ай бұрын
  • I love your discussions & demonstration or chemistry - if you had been my teacher and I realised my passion earlier on in life, I would now either be a chemist or a teacher of chemistry ......I have read the The disappearing spoon , Uncle Tungsten & Gunpowder an explosive history and highly recommend them ...... I think you are surely one of the energetics - stay safe

    @Jonodrew1286@Jonodrew12862 жыл бұрын
  • I recently did an oxidation experiment with KMnO4 on cyclohexanone in basic conditions. Definitely a powerful oxidizer.

    @gutterball10@gutterball103 жыл бұрын
  • As a result of Prof. Szydlo's suggestion, I bought an old copy of Emsley's book about phosphorus and it is indeed awfully interesting! Thank you!

    @fiegenfiegen@fiegenfiegen3 жыл бұрын
    • That's excellent, we're glad you're enjoying it!

      @TheRoyalInstitution@TheRoyalInstitution3 жыл бұрын
  • This is awesome!

    @karlm5022@karlm50223 жыл бұрын
  • Thank you so much for reminding me of my passions...I wish my Chemistry teacher at Uni would have been more like you! I came there full of passion...only to leave after 3 semesters disillusioned. Anyway...keep up the good work...Love the videos...funny how we have the same passions...music...chemistry...fixing cars...

    @TobiasDieterich-vk6ce@TobiasDieterich-vk6ce4 ай бұрын
  • I love this guy 😂😂😂, "how about that for a totally useless fact".

    @dizbeefpvdizbeliefdizzy3612@dizbeefpvdizbeliefdizzy36123 жыл бұрын
  • In school it was my favorite thing.) If you make Al-Permanganate powder then you can initiate it with just a couple of wires and about 80-100 V of electricity from capacitor. It's very robust and reliable thing that doing well in very wide range of temperature and works very fast.

    @Ma_X64@Ma_X643 жыл бұрын
  • I would have loved you to have been my science teacher, I would have learnt so much more. You are wonderfully passionate.

    @JJLewin1@JJLewin1 Жыл бұрын
  • 15:50: Love the video. Just a heads up: 1 billion is 1,000,000,000 . 1 million million is 1,000,000,000,000.

    @grproteus@grproteus3 жыл бұрын
    • USA people and UK scientists (and in some other places, too) just use the same word for two different numbers, the seconds' being a million squared. He read that the world population was a bit above 7 billions, he just didn't remember that the source was likely using the USA version of the term.

      @woongah@woongah3 жыл бұрын
    • 10e9 used to be a milliard, 10e12 was a billion (1000000 e2), 10e18 was a trillion (1000000e3). This was used in the U.K. and some European countries. In the USA 10e9 was a billion, 10e12 a trillion and 10e15 a quadrillion. This caused no end of confusion, particularly when referring to finance, which was the main driver behind the adoption of the US nomenclature, even though the U.K. system is more logical being based on powers of 1000000! Of course, in science the SI units and prefixes were introduced (mega, giga, terra) to replace imperial measurements, this gentleman would have been one of the first to switch from imperial to SI nomenclature, I am about 6 or 7 years younger and I used both systems. It should be noted that there are still differences between US and U.K. measurements, particularly the gallon and temperature scales.

      @MRCAGR1@MRCAGR13 жыл бұрын
  • You are fascinating!

    @AZAce1064@AZAce1064Ай бұрын
  • Brilliant, it clicked in my mind similar passion I had for chemistry when I was 10y old, grabed an old chemistry book from my grand father with same ilustration of Brandt, the color of potassium permanganate soljtion is something you dont forget. Well done and we should have more fascinating persons with this love for science.

    @mikesand7773@mikesand77733 жыл бұрын
  • Awesome! Thank You! 7:31 Carbazole Dioxazine (PV 23) =)

    @SpottedBullet@SpottedBullet3 жыл бұрын
  • I love his videos

    @michaelsinaloense6449@michaelsinaloense64493 жыл бұрын
  • Fabulous!

    @davidhall9504@davidhall95043 жыл бұрын
  • You are the Walter Lewin of Chemistry, brilliant!

    @nghermit4922@nghermit49223 жыл бұрын
  • he his everything to me.......... i wish i could meet him he is awesome

    @tahamahmood4220@tahamahmood42202 жыл бұрын
  • Love me abit of Szyience!!!!

    @mr.grenade8604@mr.grenade86043 жыл бұрын
  • A house phone ringing at 21:10..??!! That's so retro!!! :-D

    @timbirch4999@timbirch49992 жыл бұрын
  • That's the exact same book he took out of Shepherd's Bush library when he was 8 years old? Wow, his library fines are going to be *enormous* ! Back when I studied chemistry, we didn't use steel mats for exothermic reactions since asbestos was considered much safer. As for the dilution, someone at work made a round of tea/coffee for the office. I tasted my coffee and told her she hadn't rinsed the spoon after she'd stirred the blackcurrant tea and two others agreed. Now I don't know what the dilution factor of stirring 3 cups of coffee with a blackcurrant flavoured spoon but I'd hazard a guess that it's even less than KMnO4.

    @immortalsofar5314@immortalsofar53143 жыл бұрын
  • So fantastic, we love us some LORD OF FIREEEE! \o/ Andrew Szydlo has given out the best gift in the form of these videos during this time, even cannibalizing his Triumph and holding Oscar hostage in his basement to provide us quality edutainment

    @zarahandrahilde9554@zarahandrahilde95543 жыл бұрын
  • Absolutely marvelous professor! I was a little disappointed that Mr Emsley’s “The Shocking History of Phosphorus” is commanding a tidy $950 here in the States (on Amazon). Hopefully, that’s situational inflation. Please keep teaching - i have had 3 wonderful chem profs. - including you.

    @rickebert7548@rickebert75483 жыл бұрын
  • I remember helping to add the salt and permanganate to water purification tanks..got it on my hand one time and my hand was purple for days lol.

    @dfbess@dfbess3 жыл бұрын
  • fantastic !

    @simonstergaard@simonstergaard3 жыл бұрын
  • What a great vid.

    @trecker59@trecker593 жыл бұрын
  • wooow, that's gonna be useful, thanks!

    @TheSchneidItworld@TheSchneidItworld3 жыл бұрын
  • Thank you sir.

    @pjtren1588@pjtren15883 жыл бұрын
  • Lovely video, but if I ever did anything like at 37:20 I'd be kicked out the lab for sure!

    @tomwatts703@tomwatts7033 жыл бұрын
  • Man, his students are so lucky!

    @rhlkiller420@rhlkiller4203 жыл бұрын
  • Thank you!

    @talfandary@talfandary3 жыл бұрын
  • Lord Szydlo

    @Rudra-mm1qf@Rudra-mm1qf3 жыл бұрын
  • This man is awaome!

    @random30sec.clipsforrecomm7@random30sec.clipsforrecomm73 жыл бұрын
  • If only my chemistry teacher was like him, i may have become a chemist.😂

    @cjod33@cjod332 ай бұрын
  • I love these videos you do, Im not a chemist, but have a pretty good understanding of many chemicals... should tell people that they can also use a few crystal's of potassium premagonate to purify water in a survival situation, now I just learned I can also make Oxygen as well! Excellent! I always carry a few vials filled with potassium premagonate and some glycerin to create a camp fire in the wettest conditions!!! Plus can purify water, and now oxygen! Haha seems like a great thing to have in a survival situations!

    @jrctattoo@jrctattoo3 жыл бұрын
    • Plus can be used as an antiseptic too. My father's and grandfather's generation used to dissolve a single crystal in water to disinfect cuts and bruises.

      @villie86@villie863 жыл бұрын
    • @@villie86 can actualy make rocket fuel with it as well, with other house hold items....😁

      @jrctattoo@jrctattoo3 жыл бұрын
    • @@jrctattoo Do not use potassium permanganate for rocketry or fireworking if you love your fingers and life. Mixtures can be unstable and dangerous. Also, reaction with glycerin requires certain temperature to ignite. In cold conditions, it will not work.

      @BlisterHiker@BlisterHiker3 жыл бұрын
  • 15:43 "Eight billion is eight million million". I was considering whether or not to correct the professor's math (it's eight thousand million) when I remembered reading something in grade school more than 60 years ago which stated that in Britain, a billion is literally one million squared, or a million million, what we call a trillion. Obviously, the world population isn't eight trillion people, but that's not what prompted me to comment. The fact that I read a line or two, in passing, sometime during the Kennedy administration and had not once during the intervening six decades given it even a passing thought, and then recalling that memory clearly upon hearing Dr. Szydlo's comment, is just mind blowing. The Human brain is the ultimate mystery.

    @frankroberts9320@frankroberts93203 жыл бұрын
  • this was very good............

    @FredStam@FredStam3 жыл бұрын
  • Surely Andrews parents were highly pleased about his 1st succesful chemical experiment:)

    @klaus_niemand@klaus_niemand3 жыл бұрын
  • Good man!

    @JoTheVeteran@JoTheVeteran3 жыл бұрын
  • 39:00 There's a greenish-blue virtual image (in the optics sense, ie not a "real" image) of the flame flickering above professor Szydlo's head in his shadow and I was wondering if anyone could explain what might be causing that and/or why it's a different color. does it exist in real life or is it maybe something happening with the camera? I personally think it might have something to do with that flask. I know there probably isn't a good answer for why the image is there (other than, "it must be reflecting off something in the room") but I am curious on maybe an explanation for why the flame's image is a different color or why it's a virtual image and not a real image.

    @crazyrocket2900@crazyrocket29002 жыл бұрын
  • oh bigclive would love this haha

    @Elastane@Elastane3 жыл бұрын
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