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Acrofales
Spain18291 Posts
On August 26 2015 04:35 Clonester wrote: Next easy experiment for QM: Get liquid helium, watch what it is doing. There is nothing easy about that experiment, lol. Liquid helium is not easily available, hard (expensive) to store/transport, and difficult to handle, due it being so incredibly cold. | ||
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Simberto
Germany11835 Posts
Everyone is probably familiar with the Bohr Atom model. This involves electrons circling around a positive atom core. However, you should also know at that point that electrons, when accelerated, emit energy. Add conservation of energy into this, and you quickly realize that something isn't working. Any atom model that involves moving electrons can not work according to classical physics. And any atom model that doesn't include moving electrons lacks an explanation as to why they don't fall into the core (And all of the classical atom models fail completely at predicting even the spectrum of basic hydrogen). Thus, the very fact that stuff exists proves that classical physics don't describe small things well. It doesn't directly describe how stuff works, but it turns out that the methods of QM lead to atom models that actually work and fit what we observe (spectrum lines specifically) very well. | ||
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fluidrone
France1478 Posts
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Acrofales
Spain18291 Posts
On August 27 2015 21:50 fluidrone wrote: How can a person falling from the sky ever survive? Parachute... | ||
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ThomasjServo
15244 Posts
squirrel suit | ||
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marvellosity
United Kingdom36161 Posts
read the link ^^ | ||
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Acrofales
Spain18291 Posts
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marvellosity
United Kingdom36161 Posts
your mafia absence has dulled your wits  | ||
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OtherWorld
France17333 Posts
On August 27 2015 21:50 fluidrone wrote: How can a person falling from the sky ever survive? Don't think it's that unlikely if upon impact the body : -(1) doesn't get hit by a blunt stationary object or pierced by a penetrating object at a vital part (head, heart...) -(2) doesn't suffer from serious injuries at the upper spinal chord or at the brain -(3) doesn't suffer too seriously from sudden deceleration injuries So basically you need not to have your head hit whatever surface you land on before your body does, and (probably more important) to somehow make the sudden deceleration on impact not life-ending - by landing on a surface that will absorb energy well. | ||
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Acrofales
Spain18291 Posts
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[UoN]Sentinel
United States11320 Posts
On August 27 2015 23:05 Acrofales wrote: Can we take away fluidrone's hyperlinking privileges? I'd still like a change to the link appearance. Can we get the underlines back? | ||
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ThomasjServo
15244 Posts
On August 27 2015 23:05 Acrofales wrote: Can we take away fluidrone's hyperlinking privileges? He did use a spoiler in a blog, just sayin' | ||
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fluidrone
France1478 Posts
 Sorry I wanted to "lobby" for the link change, using the ? was just to prove a point, did not mean to hide it as much  Edit: is it me or are tl mods less pew pew quick than they were before? | ||
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Djzapz
Canada10681 Posts
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[UoN]Sentinel
United States11320 Posts
On August 28 2015 00:02 Djzapz wrote: When you're meeting someone in a public space where there's quite a few people and you have no way to recognize each other, how do you do it without looking like an asshole? I'm selling something to a guy, I told him I'd have the cardboard box with me. If he doesn't spot me, do I just go around saying his name? Do you have a number or some way of messaging him? | ||
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Acrofales
Spain18291 Posts
On August 28 2015 00:02 Djzapz wrote: When you're meeting someone in a public space where there's quite a few people and you have no way to recognize each other, how do you do it without looking like an asshole? I'm selling something to a guy, I told him I'd have the cardboard box with me. If he doesn't spot me, do I just go around saying his name? Describe what clothes you'll be wearing, and try to wear something that doesn't look stupid, but is not completely usual (saying you will be wearing jeans and a t-shirt doesn't help anybody). If you have some obvious characteristic (such as a big tattoo somewhere visible, bright blue eyes, etc. etc.) it's also worth mentioning. Finally, in this day and age, exchange phone numbers, and whatsapp your exact position (such as: I am standing under the big tree with red flowers). | ||
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OtherWorld
France17333 Posts
On August 28 2015 00:02 Djzapz wrote: When you're meeting someone in a public space where there's quite a few people and you have no way to recognize each other, how do you do it without looking like an asshole? I'm selling something to a guy, I told him I'd have the cardboard box with me. If he doesn't spot me, do I just go around saying his name? Can't you just message him about a precise position once in the public place ? | ||
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Oshuy
Netherlands529 Posts
On August 28 2015 00:02 Djzapz wrote: When you're meeting someone in a public space where there's quite a few people and you have no way to recognize each other, how do you do it without looking like an asshole? I'm selling something to a guy, I told him I'd have the cardboard box with me. If he doesn't spot me, do I just go around saying his name? Stand on top of the cardboard box, bring a huge sign on a pole that states "I have a cardboard box" and fire a flare every few minutes. In case he might be blind, you could add a loop shouting the same sentence. | ||
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Djzapz
Canada10681 Posts
On August 28 2015 00:04 [UoN]Sentinel wrote: Do you have a number or some way of messaging him? On August 28 2015 00:13 OtherWorld wrote: Can't you just message him about a precise position once in the public place ? I have but the place where we'll meet has iffy phone reception. On August 28 2015 00:06 Acrofales wrote: Describe what clothes you'll be wearing, and try to wear something that doesn't look stupid, but is not completely usual (saying you will be wearing jeans and a t-shirt doesn't help anybody). If you have some obvious characteristic (such as a big tattoo somewhere visible, bright blue eyes, etc. etc.) it's also worth mentioning. Finally, in this day and age, exchange phone numbers, and whatsapp your exact position (such as: I am standing under the big tree with red flowers). Let's hope he pays attention On August 28 2015 00:23 Oshuy wrote: Stand on top of the cardboard box, bring a huge sign on a pole that states "I have a cardboard box" and fire a flare every few minutes. In case he might be blind, you could add a loop shouting the same sentence. It's taking place at a shooting range where people are too often looking down scopes, the second purest form of tunnelvision there is (after looking down a tunnel). Nonetheless he'll probably just see me, shouldn't be too hard. | ||
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[UoN]Sentinel
United States11320 Posts
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