Delightful and Dangerous Liquids - with Mark Miodownik

  • Published: 17 July 2019
  • From life sustaining water and powerful kerosene, to intoxicating wine and weird liquids soap, liquids are all around us and share some rather interesting characteristics with each other.
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    A series of glasses of transparent liquids is in front of you: but which will quench your thirst and which will kill you? And why? Why does one make us drunk, and another power a jumbo jet? Structured around a plane journey, Mark Miodownik explores the liquids that can bring death and destruction as well as wonder and fascination.

    Watch the Q&A:

    Mark Miodownik is a materials engineer and Professor of Materials and Society at UCL where he teaches and runs a research group. He presented in the 2010 CHRISTMAS LECTURES.

    This talk and Q&A was filmed in the Ri on 18 January 2019.

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Comments • 229

  • Marco B
    Marco B  2 days back

    Next time, give the man 3 hours to talk, interresting subjects, some not, but not like this.

    • Jan Morris
      Jan Morris  3 days back

      Oh dear. What an awful lecture. It could have been so interesting. Rambling, not prepared and lecturer so nervous.

      • Bradley Watson
        Bradley Watson  3 days back

        Way off topic but: Was that global oil production map made by a color blind person? Grey to aqua to blue to black were the spectrum of colors to denote the production levels of oil in the map. The map was mostly black! Awesome info graphic!!!

        • utubewatcher806
          utubewatcher806  4 days back

          The safety briefing is a lot like a very bedazzling shirt--distracting.

          • Fry Pan
            Fry Pan  4 days back

            wow this would not even be ok for teens

            • Root Beer
              Root Beer  6 days back

              get a bic or a torch you amateur lol

              • OddSockGames
                OddSockGames  1 weeks back

                Fake news. The kerosene is stored in the wings not under my ass! This guys kinda awesome

                • jzero4813
                  jzero4813  1 weeks back

                  Most of the fuel in most passenger aircraft is actually in the wings and tail.

                  • Joe Black
                    Joe Black  1 weeks back

                    Quite a philosophical fellow. The human condition really is a funny old thing.

                    • Sali Mall
                      Sali Mall  1 weeks back

                      He is got something wrong there ... I am pretty sure that the wax of the candle is just there to slow the burning process...otherwise the wick would burn in couple of minutes.... if you have too much liquid wax ,it does extinguish the the wax is not a fuel...nor its vapour since you can burn the wick on its own... The kerosene lamp on the other hand is different... he seems to be talking about a kerosene lamp ... but demonstrating on a candle... weird...

                      • Dirty Robot
                        Dirty Robot  1 weeks back

                        Liquid restriction is nothing to do with terrorism. It is to stop drug trafficking. Most high value drugs can be made into solution and reconstituted at the destination.

                        • Alex Oja
                          Alex Oja  2 weeks back

                          Well, not trying to sound too critical but honestly this is a pale shadow of what A. Szydlo would cover in his lecture with his left hand.

                          • Math Easy Solutions
                            Math Easy Solutions  2 weeks back

                            Ahhh the 9/11 disinformation wrecks what otherwise was a decent video. "Kerosene" doesn't cause conventional "planes" to glide through steel girders like butter and certainly not turn 7 towers into dust in midair leaving very little rubble or seismic impact.

                            • kingklabe
                              kingklabe  3 weeks back

                              According to this lecture, only three hundred people worldwide are using kerosene lamps today. 35:56

                              • MrKotBonifacy
                                MrKotBonifacy  3 weeks back

                                Seems like this guy couldn't reaaly made up his mind on "what is going to be the subject of my lecture" - or maybe there were TWO bottles of wine shortly before commencement of that presentation, but only one made it to the end of it...
                                And I used to think Andrew Szydlo is the most chaotic lecturer on RI channel... Well, one learns throughout his entire life...

                                • Joe Brinson
                                  Joe Brinson  3 weeks back

                                  Worse RI presentation. Rambling opinions, failed experiments/demonstrations.

                                  • Dominik Pfleghaar
                                    Dominik Pfleghaar  3 weeks back

                                    I usually dig everything from the RI, but this lecture was just a waste of time in my opinion.
                                    Going out on too many tangents, this talk has more loose ends than a pot of spaghetti.

                                    • Mark DiSanzo
                                      Mark DiSanzo  3 weeks back

                                      One, this seemed to have very little to do with liquids. Two, I gave up when he couldn't get the pin to float. Not prepared for his own experiments. WTF with a handheld candle cam? You didn't know you were going to need a camera mount? Those poor folks in the audience gave up a Friday evening for this?

                                      • Vicki Ross Tudor
                                        Vicki Ross Tudor  3 weeks back

                                        He completely botched this entire presentation at 13:09. It was riddled with mistakes, poorly worded explanations, awkward pauses and nervous laughter The level of his ability to state his findings in a clear and coherent way was akin to a 6th grader presenting a science fair project. Which is an insult to 6th graders. And might I add, he claims you can't smell a candle while its burning, you can only smell it once the wick is put out. This is grossly incorrect. That theory may be somewhat true for candlesticks for candelabras, but this statement is completely misleading and does not apply to all candles. It's like he forgot scented candles exist. which sole purpose is to emit a fragrance while burning.

                                        And it's also probably not a good idea to incorporate horrific images of destruction of the twin towers. Unless you're presenting a lecture on 9/11, this is territory you don't want to wander into. I wouldn't be the least bit surprised if people started to get up and leave at that point.

                                        • Lane Eardink
                                          Lane Eardink  3 weeks back

                                          I believe aircraft store fuel in the wings and not under the seats.

                                          • Dinliana Pachuau
                                            Dinliana Pachuau  2 weeks back

                                            its stored both in the fuselage and in the wings,ofc its more complicated than that but thats the essence of it.

                                        • Laezar
                                          Laezar  3 weeks back

                                          So why am I watching a one man show about airplane security?

                                          • Zach Whitaker
                                            Zach Whitaker  3 weeks back

                                   the point finally

                                            • Zach Whitaker
                                              Zach Whitaker  3 weeks back

                                              RI this needs some polishing it also should not be called "liquids..." it should be "this particular liquid"

                                              • caramba10
                                                caramba10  3 weeks back

                                                The worst lecture I think I've seen, did he just turn up and try to wing it? obviously not rehearsed, from the "can't read this, should have bought my printed notes", to embarrassing demo to extinguish a flame while holding camera on subject and in focus fail.

                                                • Patrick Higgins
                                                  Patrick Higgins  3 weeks back

                                                  what ridiculous fear mongering-terrible ... I love this series-check out Irving Finkel on ancient Sumerian I'm turning this off...

                                                  • Stuart Joynson
                                                    Stuart Joynson  3 weeks back

                                                    Kerosene is still used by 300 people worldwide for their indoor lighting?

                                                    • Calum Spencer
                                                      Calum Spencer  4 weeks back

                                                      TNT isn't made of nitroglycerin

                                                      • jhcfight
                                                        jhcfight  4 weeks back

                                                        LOL, underneath your seat is a 100,000 litres of querosene. That was my que. Professor?

                                                        • tres lineas
                                                          tres lineas  4 weeks back

                                                          This video should be called Querosene. Because he talks only about querosene. By the title you may think he will talk about various liquids and fluid mechanics, but he will talk about querosene, the history of querosene, the distillation of oil and the combustion of querosene.

                                                          • Chris Bard
                                                            Chris Bard  4 weeks back

                                                            I am 7.43 in and he keeps rambling about airplanes in a funny way... I don't want to be blunt about it.

                                                            • Erg Gml
                                                              Erg Gml  4 weeks back

                                                              With respect to the brilliant presenter, most of the fuel aircraft carry is in the wings. Some is carried in central tanks and other large aircraft store it elsewhere too. Most of the fuselage tube is given over to other things.

                                                            • Pendulous Testicularis
                                                              Pendulous Testicularis  4 weeks back

                                                              Vodka is a delightful and dangerous liquid.

                                                              • Fredrick Nietzsche
                                                                Fredrick Nietzsche  4 weeks back

                                                                they do sell kerosene at pumps the place is called air ports.

                                                                • caleb wood
                                                                  caleb wood  4 weeks back

                                                                  So much misinformation
                                                                  did he even do research

                                                                • Truth Seeker
                                                                  Truth Seeker  4 weeks back

                                                                  I was trying to listen until he got to twin towers and 9/11. So part of a building blows up with jet fuel and the whole building comes down in free fall? Physics day off must have been that day and this talk is supposed to be science? Maybe in a nursery for 4-year-olds...

                                                                  • MyTech
                                                                    MyTech  4 weeks back

                                                                    The belt is to restrain you in moderate and severe turbulence. Which can include solitary air current events. Secondly, it keeps passengers in their seat so the center of mass doesn't change during critical landing and takeoff maneuvers.
                                                                    Most fuel is stored out in the wings, the fuselage tanks are the last filled and first to empty for structural reasons.

                                                                    • Accidental Headclunkers

                                                                      A for effort. then,

                                                                      • Phil Sheppard
                                                                        Phil Sheppard  4 weeks back

                                                                        Is Glass a Liquid?

                                                                      • Wicked Guppy
                                                                        Wicked Guppy  4 weeks back

                                                                        You will be blown out not sucked out. The cabin pressure is greater than the outside air pressure.

                                                                        • Vicki Ross Tudor
                                                                          Vicki Ross Tudor  3 weeks back

                                                                          There are many holes in this presentation and you’ve identified one glaringly obvious one.

                                                                      • Mark Keown
                                                                        Mark Keown  4 weeks back

                                                                        A bit of rehearsal would have made this a bit better.

                                                                        • Edgar Carpenter
                                                                          Edgar Carpenter  4 weeks back

                                                                          Professor Miodownik is always smart and interesting. And very English-sportsman, in that he doesn't seem to work out his experiments beforehand, but just takes a whack at them when he's in front of the audience. A strip of metal foil would work more easily than a pin to show surface tension, and using the stand that the portable camera was already attached to(!) would be better to get a stable image of a candle flame.

                                                                          All that said, I enjoy him and his thinking, I enjoy his foibles, and I hope he comes back soon.

                                                                          • Charles Clements
                                                                            Charles Clements  4 weeks back

                                                                            That was a worthless speech. That speech is not going to over come the enormous greed that is in the hearts of the industrialist. He would need to talk about something that would draw the attention of the industrialist to something else. Good luck on that!

                                                                            • Michael Hudson
                                                                              Michael Hudson  1 months back

                                                                              I'm not sure if Mr. Miodownik knew, the fuel tanks in commercial jets are built into the wings spans. Even if this makes for a more exciting story, the aircraft today does NOT put the jet fuel directly underneath the passenger 🧐.
                                                                              Maybe a correction in the description?

                                                                              • MyTech
                                                                                MyTech  4 weeks back

                                                                                Most do have fuselage tanks under the passengers, however these are the last filled and first emptied for structural reasons. This applies to most planes not just transport category.

                                                                            • Lawrence Miller
                                                                              Lawrence Miller  1 months back

                                                                              Seems the agenda of this video is pushing the global warming narrative and getting people to fly less. Global warming is based on fraud in temperature readings, the model, and is hyped in the mass media, schools, and other organizations. For example, the recent claim of the temperature record in France was analyzed by Tony Heller as being based on one reading being greater than 1 C of surrounding readings, and this reading was taken above a tile roof. Tony Heller reports on other global warming fraud. It is interesting that in the 1920's some newspapers reported of the high temperatures in the arctic of greater than 90 F and the concern of the ice melting. The ice didn''t melt then, still isn't happening. Check out his channel on YouTube, Tony Heller.

                                                                              • MG1
                                                                                MG1  1 months back

                                                                                Thank you. it is always nice to listen to a real scientist sharing their knowledge. not the fictional fairy tail talkers who created crazy current model of space and matter. Ferydoon Shirazi. MG1

                                                                                • bagariddum
                                                                                  bagariddum  1 months back

                                                                                  aircraft seat belts save exponentially more passengers from injury/death resulting from turbulence than from crashes. Just like in a car, though, it'd be foolish not to wear it.

                                                                                  • CambridgeMart
                                                                                    CambridgeMart  1 months back

                                                                                    14:00, the macro camera work was horrendous, not a chance of seeing what he was trying to demonstrate.

                                                                                    • phuc ewe
                                                                                      phuc ewe  1 months back

                                                                                      I only fly first class.
                                                                                      Because Danger is my middle name.