If you were severely dehydrated and you came across a water sources, how would your body redistribute the lost water, would your body prioritise water to the brain and vital organs first? |
- If you were severely dehydrated and you came across a water sources, how would your body redistribute the lost water, would your body prioritise water to the brain and vital organs first?
- Was the Speed of Sound ever considered a theoretical speed limit?
- How are 64k demos like this possible?
- If person A is travelling at a fast speed away from person B, why is it that person A's time runs slower when you could say that person B is travelling away relative to A?
- Can light orbit the event horizon of a black hole?
- Why do electricity pylons make a loud buzzing sound?
- What would happen if two black holes collided?
- What happens when a single photon is released and subsequently is absorbed?
- What happens when a new virus infects a cell that has already been infected by a latent virus?
- Why do cosmic jets always shoot out of their body's rotational axis?
- Why does our skin feel itchy at times and why does scratching it make us feel better?
- We know that photons has no mass yet are affected by gravity and have momentum. Using measurements of those two interactions could we work backwards to find what mass a photon would have if it had mass?
- If the solubility of CO2 decreases as temperature increases, then why is global warming causing ocean acidification?
- Last night, I was running my fingers through my blanket. I could hear crackling sounds, and when i saw from inside the blanket, I could see flashes of light. How and when does this phenomenon occur ?
- Why is it that there is no planet that orbits the sun in the opposite direction to the other planets?
- Can someone briefly explain Lawrence Krauss's theory of "something from nothing"?
- What things are/could be older than the Earth, here on Earth?
- What is the speed of time?
- Do we need any form of sleep other than REM?
- Why does E=mc^2 not have the 1/2 coefficient that KE=1/2 mv^2 has?
- Does quantum tunneling have any appreciable effect on the electrical signals in your brain?
- Have we seen weirdly deformed galaxies?
| Posted: 17 Dec 2015 08:17 PM PST |
| Was the Speed of Sound ever considered a theoretical speed limit? Posted: 17 Dec 2015 08:17 PM PST This might be more of a history question, but I'm curious about scientific opinion of the speed of sound. The general consensus is, knowing what we know now, the speed of light is the ultimate speed limit of the universe. Before we could routinely break the sound barrier, was it considered a theoretical speed limit? Were people ridiculed for thinking they could go faster than it? Thank you. [link] [65 comments]  |
| How are 64k demos like this possible? Posted: 17 Dec 2015 09:51 PM PST I'm referring to this demo in particular. But there are many other impressive examples. My understanding is that the software that generates not only the visuals, but the sounds in this video, is contained within 64kb of code. I'm having a hard time wrapping my brain around how that is possible. I understand that this is procedural generation with intent. And arbitrary data can't be compressed this way. But the result is nevertheless extraordinary. [link] [51 comments]  |
| Posted: 18 Dec 2015 10:36 AM PST Since the motion is relative, why is it that the one travelling experiences slower time? [link] [13 comments]  |
| Can light orbit the event horizon of a black hole? Posted: 17 Dec 2015 07:36 PM PST If I understand it, at the edge of a black hole, light could hypothetically orbit the black hole, given its direction is perfect? How would this affect something falling into the black hole, and the black hole itself? Would it effect hawking radiation? [link] [55 comments]  |
| Why do electricity pylons make a loud buzzing sound? Posted: 18 Dec 2015 08:20 AM PST |
| What would happen if two black holes collided? Posted: 18 Dec 2015 10:44 AM PST Sorry if this has been covered before, but what world happen if two black holes collided? Would we be able to observe the collision? Recommended links for further reading. Thank you. [link] [5 comments]  |
| What happens when a single photon is released and subsequently is absorbed? Posted: 18 Dec 2015 07:02 AM PST Lets say a single photon is released, perhaps it is the last one released from an object as it passes through an event horizon (this is what got me thinking about this). When I think about this photon as a particle, it seems like it will be released in a specific direction, and if something happens to be in that direction it will eventually absorb that photon (E = hf). But then I remember the double slit, and the idea of wave/particle duality (I admit I don't know a ton about this). But my understanding is the photon will also behave like a wave, and have superpositions and all that jazz. So my question is what actually happens to this photon if say someone sees it 4 light years away. This means they will absorb the photons energy, so does this light disappear to everyone/everything more than 4 light years away? Could an infinite number of observers see this photon? If so, where is all that energy coming from? [link] [12 comments]  |
| What happens when a new virus infects a cell that has already been infected by a latent virus? Posted: 17 Dec 2015 09:07 PM PST |
| Why do cosmic jets always shoot out of their body's rotational axis? Posted: 18 Dec 2015 05:46 AM PST I always see pictures of stars or other bodies in space with accretion disks and jets that exit along the axis of rotation. I'm guessing it's a symmetry related answer, but what forces them to behave this way? [link] [5 comments]  |
| Why does our skin feel itchy at times and why does scratching it make us feel better? Posted: 17 Dec 2015 07:57 PM PST |
| Posted: 18 Dec 2015 05:54 AM PST |
| Posted: 17 Dec 2015 10:22 PM PST I've read that the CO2 becomes less soluble in water the hotter it gets, but I've also read that the ocean is absorbing more CO2, causing its pH to decrease. Are both of these statements true? If so, how? [link] [6 comments]  |
| Posted: 17 Dec 2015 11:04 PM PST I also noticed that more fingers I used, the bigger the area of the illumination was. [link] [13 comments]  |
| Posted: 18 Dec 2015 09:59 AM PST |
| Can someone briefly explain Lawrence Krauss's theory of "something from nothing"? Posted: 17 Dec 2015 08:20 PM PST |
| What things are/could be older than the Earth, here on Earth? Posted: 17 Dec 2015 08:28 PM PST Im buying myself a gift for christmas, and I want something that would have sentimental value along with scientific value. My initial thoughts were that i wanted something older than the earth. And my first thought went to space. A meteorite maybe. My question is for you guys, is there anything else i could acquire that was potentially or definitely older than the Earth? [link] [17 comments]  |
| Posted: 17 Dec 2015 06:31 PM PST |
| Do we need any form of sleep other than REM? Posted: 17 Dec 2015 09:40 PM PST And if not, area there any developing technologies to induce REM sleep, lapping the number of hours wasted sleeping throughout your life. [link] [2 comments]  |
| Why does E=mc^2 not have the 1/2 coefficient that KE=1/2 mv^2 has? Posted: 17 Dec 2015 05:30 PM PST I understand the 1/2 for many energy formulas comes from calculus integration. Why do some formulas like E=mc2 not have the half, and what is the non-math way to explain the significance of having that coefficient (in layman's terms) [link] [7 comments]  |
| Does quantum tunneling have any appreciable effect on the electrical signals in your brain? Posted: 17 Dec 2015 04:47 PM PST I have read that modern transistors are getting small enough that often the electrons just tunnel to the other side. Looking online I found that neurons are about 3 or 4 orders of magnitude bigger than neurons, but I was wondering if there was still any observed effects. [link] [7 comments]  |
| Have we seen weirdly deformed galaxies? Posted: 17 Dec 2015 08:04 PM PST We all know the Fermi Paradox, so I will not bother detailing it here. A class 2 civilization will use all the energy of a star....making it no longer visible to us. A class 3 civilization will use all the energy of a galaxy, also making it no longer visible to us. But there would be a period of time between class 2 and class 3 where a LOT of stars in a galaxy would "go black" while a lot would still be visible. Have we seen any galaxies weird black patterns, such as we might see if a class 2 civilization was moving to class 3, in them? [link] [1 comment]  |
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