Balancing a broom - QI: Series K Episode 9 Preview - BBC Two

  Рет қаралды 261,978

BBC

BBC

10 жыл бұрын

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Watch the BBC first on iPlayer 👉 bbc.in/iPlayer-Home More about this programme: www.bbc.co.uk/programmes/b03ggl8f Stephen teaches the panel the art of balancing brooms.
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Пікірлер: 49
@ninjabluefyre3815
@ninjabluefyre3815 7 жыл бұрын
Alan Davies: Defying physics since 2013.
@ImmortalSparrow
@ImmortalSparrow 10 жыл бұрын
I wonder how many points Alan will receive for defying the 'science elves' =D
@Smudgie
@Smudgie 10 жыл бұрын
The tone Stephen Fry takes with Alan Davis in particular is exactly that which a mother uses on a highly strung and spoilt child.
@Inlelendri
@Inlelendri 10 жыл бұрын
I wonder when Stephen will learn that whenever he says 'always' or 'never' in those kind of demonstrations, one of the panel members will more than likely prove him wrong. Also, ripping up card -
@Gilmaris
@Gilmaris 7 жыл бұрын
And not unusually, it's going to be Alan.
@sirswift23
@sirswift23 7 жыл бұрын
The science elves were sentenced to death after that!
@Observ45er
@Observ45er 5 жыл бұрын
The 'science elves' are not as science-y as they should be. It is just harder to balance when the CG is low than high because the low CG allows the top to move off center more quickly requiring faster correction reflexes. Plus, with bristles down on the hand, it allow a little torque to be applied even if Alan didn't realize it, but I suspect he did because he hardly appeared to be providing any corrections at all.
@Captain-Jinn
@Captain-Jinn 7 жыл бұрын
Alan, we've always made jokes about how you could totally be the chimney sweep in Mary Poppin's. You're not helping your case, mate.
@Dominator150395
@Dominator150395 9 ай бұрын
My favourite thing about this show is how, every time Stephen/Sandi asks the panel to do an easy trick, Alan will invariably muck it up. But if he asks them to do something to prove that it's extremely difficult or impossible, Alan will get it right on the first try.
@viridismonasteriense
@viridismonasteriense 10 жыл бұрын
Alan Davies: Defier of Physics
@bluepalmer6908
@bluepalmer6908 5 жыл бұрын
Absolutely lost it at that cut to Alan at 1:46
@dawnqwerty
@dawnqwerty 7 жыл бұрын
"Perhaps it will look more natural in yours"
@Calvero52
@Calvero52 10 жыл бұрын
I learned that trick years ago in science class, though we used rulers...less dangerous ;)
@SeanSKZ
@SeanSKZ 10 жыл бұрын
Brilliant :D
@justinyau7595
@justinyau7595 10 жыл бұрын
you could say this is a bit of a Slapstick Comedy ;)
@sootyandgus
@sootyandgus 10 жыл бұрын
love it!(:
@JacobKind
@JacobKind 10 жыл бұрын
fantastic XD
@byheavenlyhosts
@byheavenlyhosts 10 жыл бұрын
I'm just studying center of gravity...very interesting and funny! Please do it with a person!
@tomevans6961
@tomevans6961 10 жыл бұрын
has anyone else just tried this with the nearest broom they can find?
@David_B_Dornburg
@David_B_Dornburg Жыл бұрын
Sweaty hands will defeat it. Dry hands will work every time.
@Tricorvus
@Tricorvus 10 жыл бұрын
did anyone else come to watch this, in hopes that it would help them with their Quidditch balance? It actually did help me understand something :D
@JK-vp2ux
@JK-vp2ux 5 жыл бұрын
No Jo, women all over the country aren't using those to sweep floors. Those are rough brooms designed for outdoor use. Especially good for use on cobbles. Used to sweep streets.
@CaptHayfever
@CaptHayfever 4 жыл бұрын
Exactly. I use a broom like that to clean up grass clippings from the sidewalk after I mow & trim the lawn.
@619ck154
@619ck154 10 жыл бұрын
I will watch this episode just for Marcus
@emmamiele5850
@emmamiele5850 7 жыл бұрын
What's his last name?
@rofl2k3k
@rofl2k3k 7 жыл бұрын
Aurelius
@CyrusHalcyon
@CyrusHalcyon 7 жыл бұрын
Isn't this dependent on the coefficient of friction, whereby it won't work if you apply oil to your hands prior? It also obviously wouldn't work in outer space. It would also not work for a very long broom that is several meters long since the angle of incidents and the base coefficient of friction would result in a k_1 (left) and k_2 (right) that are fairly close to k_base such that you would move linearly despite a still non-negligent weight distribution difference once at final position. To that point I'd be surprised if it would work with a plastic broom - given the highest friction? Has anyone confirmed? Wood is very smooth.
@travelerx
@travelerx 6 жыл бұрын
CyrusHalcyon also, have you considered, that if you used a tree stump with an ostrich on one end it might not work?
@Observ45er
@Observ45er 5 жыл бұрын
It relies on the coefficient of friction being PROPORTIONAL to pressure. The hand nearer to the CG is supporting more weight and has more frictional force so won't move when a given force is applied to pull the hands together.
@Observ45er
@Observ45er 5 жыл бұрын
The 'science elves' are not as science-y as they should be. It is just *harder* to balance when the CG is low than high because the low CG allows the top to move off center more quickly requiring faster correction reflexes. Plus, with bristles down on the hand, it allow a little torque to be applied even if Alan didn't realize it, but I suspect he did because he hardly appeared to be providing any corrections at all.
@JzanderN
@JzanderN 5 жыл бұрын
The science elves have to balance science, history, maths, geography and pretty much every other category you can think of that may have interesting facts. Also, they have to look up and fact check thousands of facts to ensure they have enough that are interesting for the show, which is 2 hours every filming (cut down to an half an hour or 45 minutes for XL). They're not going to be 100% absolutely accurate all of the time and they acknowledge that they are wrong. They've asked the question "How many moons does the Earth have?" at least three times, each time with a different answer; they've taken away points from Dara Ó Briain when he said that the triple point of water is 0°C and the audience pointed out that it's actually 0.01°C and one of the first facts in the episode 'Knowledge' was that a lot of the facts they give on the show will end up untrue. In fact, they said that "an estimated 7% of the things [Stephen will] tell you this evening will be shown to be untrue in a year's time." So yeah. This isn't a science show and they know it. They aren't, as you called them in another comment above, "wannabees." This is a comedy panel show that centres around giving interesting facts with comedians and other interesting personalities commenting on them.
@Observ45er
@Observ45er 5 жыл бұрын
Yep. Some folks just like to complain about nothing of importance... ... I'm sorry, but small minds .... small problems. I really enjoy the comedy and just point out something they missed. It's OK, they have big jobs and sorry if I sounded hyper critical, I'm not... .. I also fall into the trap of wanting to do a little correction now and then for my 3 seconds of fame... This is just about the best show ever and I wish I had full access here in the US. .. I really enjoyed the way Dara reacted when he was corrected: "I'm not gonna' let that fecker get away with... [mine: typing away madly] - - Cheers Technical and Science Advisor Steve
@JzanderN
@JzanderN 5 жыл бұрын
The problem I had was the way you made it out as if they lost credability because they missed this out. The biggest was in the other comment where, as I said, you called them "wannabees." I don't mind correcting them or adding it on as an additional fact, it's just the way you came across while doing so that bothered me.
@Observ45er
@Observ45er 5 жыл бұрын
+JzanderN, . Sometimes negative or insulting comments are in the eyes of the beholder. To someone like me who understands so much, they are trying to be science experts and they are either missing things, or possibly not wanting to go into too much detail explaining things so as not to loose the general audience. That is simply pointing out facts. .. At other times, Stephen goes to great lengths to explain his demos, such at the H2O2 and soap in the large Erlenmeyer flask. He didn't on this one. . Other times I see his rather weak explanation of some things, but it is only a slight irritant. ... It is still one of the most humorous, entertaining and educational shows ever... ... "It's NOT There." "Child buffing workshop." "They say of the Acropolis..." Giant tortoise. "Where the Clowns by their shoes... "Would young sir like to wear a cravat on the cross country run?" Stephen's wallet named Andrew" ... However, you have a point I believe many are oblivious of. Pointing things out here is pretty stupid if you really think about it. Why should anyone's opinion of every little nit picking thing be so important that it needs an international voice. So many comments are like ..... who cares what you think... right? "I" just wanna' tell you what "I" think.... - - Cheers
@Observ45er
@Observ45er 5 жыл бұрын
+JzanderN, .. Actually, being called a "wannabe" should be a complement from me because at least they are working to counter all the science denier nutjobs with _fewer_ than seven functional brain cells, that seem to be multiplying at an alarming rate ... or at least given wider visibility because of the Web.
@demos113
@demos113 10 жыл бұрын
Because the picture of Archimedes they use shows him with a very big and thick beard.
@audax67
@audax67 10 жыл бұрын
See "The Beezer", 1956
@michaelheeheejackson7255
@michaelheeheejackson7255 6 жыл бұрын
is that dans data self?
@harrynelson9203
@harrynelson9203 5 жыл бұрын
James Richard Jeremy Clarkson-Hammond-May 😂😂😂 Just Dan
@andrewgalloway7344
@andrewgalloway7344 6 жыл бұрын
marcus black mirror guy
@Fuchsia_tude
@Fuchsia_tude 8 жыл бұрын
@Joleine28 he was joking that no one would be able to hear him because his voice would be muffled through all that beard.
@vincentsison4443
@vincentsison4443 10 жыл бұрын
Omg, I too am learning about Center of Gravity in school. This is I need an odd coincidence IAmAGeorgiasaurus.
@jadhamizan
@jadhamizan 9 ай бұрын
Bongok siot rambut megi tu
@Observ45er
@Observ45er 5 жыл бұрын
It relies on the (coefficient of) friction being PROPORTIONAL to pressure. The hand nearer to the CG is supporting more weight and has more frictional force so won't move/slide when a given force is applied to pull the hands together. The heavier side 'sticks'. ... Alan initially fails because he goes too fast and the sideways inertia of the broom holds it in place while his hands move to the center of the length. ... Danny fails because he is jerking his hands also allowing the sideways inertia to prevent proper sliding of hands. ... The elves and Stephen aren't quite as science-y as they think... wannabees...
@IAmAGeorgiasaurus
@IAmAGeorgiasaurus 10 жыл бұрын
I'm learning about centre of gravity and stuff in physics at the moment, so this showing up is a kinda creepy coincidence...
@anthonyfrost6952
@anthonyfrost6952 10 жыл бұрын
rubbish
@jess_5361
@jess_5361 3 жыл бұрын
WA is?
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