Where does Hawking Radiation fall on the EM Spectrum? |
- Where does Hawking Radiation fall on the EM Spectrum?
- Is there a depth under which the buoyant force is no longer sufficient to bring a diver back to the surface ?
- My water bottle is a stainless steel, double walled, vacuum insulated vessel. It claims to keep liquids cold for up to 24 hours but only hot for 12 hours. Why are these not the same or at least close to one another?
- How to remove oil off of salt without damaging it?
- Do sports like football/gymnastics affect skeletal growth?
- Do cases of extraordinary animal intelligence such as Alex the Parrot show how intelligent that species is, or are there "geniuses" within the species making them outliers?
- If even light can't escape the event horizon, how do Black Holes emit Hawking Radiation?
- Is a blackbody not in thermal equilibrium not emitting blackbody radiation?
- What is it on the atomic scale that makes materials either heat up/cool down slower?
- Why does X^0=1?
- What is the symmetry of the nuclear force?
- What are the ripples next to the atoms in the movie 'A boy and his atom'? (link in description)
- Is Quantum Tunneling a mechanism for Quantum Entanglement or are they separate?
- Can a neutron go straight through a nucleus?
- Would spraying boiling water over a fire put it out as effectively as room temp water?
- Can a super powerful laser attached in a spaceship provide the spaceship with thrust?
- What is the difference between p-branes, D-branes, M-branes, etc...?
- How much energy is required to alter earths orbit away from the sun?
- How do moons work? Would it be possible for a planet to gain or lose moons, and could we see it happen? Why do planets farther from the sun seem to have more moons? Can a moon have a moon?
- Why attraction/repulsion by diamagnetic or paramagnetic materials to an external magnetic field?
| Where does Hawking Radiation fall on the EM Spectrum? Posted: 28 May 2016 03:51 PM PDT |
| Posted: 28 May 2016 10:47 AM PDT Hi askscience, I came across the story of diver Yuri Lipski who died while diving in the Blue Hole) He recorded his last moments in this video --- Warning: Death (non-graphic). This made me wonder something and it may be a stupid question but I thought I'd ask: For a human diver with normal gear i.e. just a bottle of oxygen, is there a depth under which the pressure of the water above exceeds the buoyancy force the diver is subject to, causing him/her to sink to the bottom ? Thanks in advance for your answers. [link] [comments]  |
| Posted: 28 May 2016 08:14 AM PDT |
| How to remove oil off of salt without damaging it? Posted: 28 May 2016 01:29 PM PDT I grew some salt crystals and kept them in oil to preserve them. Now, I would like to continue to grow them. How can I remove the oil without ruining the crystals? [link] [comments]  |
| Do sports like football/gymnastics affect skeletal growth? Posted: 28 May 2016 08:20 AM PDT My parents always told me that regularly doing sports (especially playing football) at a young age (pre and during puberty) would make me taller. Is this actually true? I always thought skeletal growth is a 100% genetics and nutrition. Sorry if this question has already been asked and I assume it has but I couldn't find any satisfying answer using the search function. [link] [comments]  |
| Posted: 28 May 2016 05:48 AM PDT |
| If even light can't escape the event horizon, how do Black Holes emit Hawking Radiation? Posted: 28 May 2016 10:16 PM PDT My hunch (and I'm completely uneducated on this subject like most) is that since gravity works on photons depending upon the energy they carry, since the gravity of a blackhole would be very high but not literally infinite, except perhaps at the singularity, if that really exists?, a high wavelength, low frequency photon could escape the black hole's gravity? [link] [comments]  |
| Is a blackbody not in thermal equilibrium not emitting blackbody radiation? Posted: 28 May 2016 02:07 PM PDT I'm confused about why it's always important to mention black bodies at thermal equilibrium. Isn't it true that any two similar objects at thermal equilibrium would emit and absorb the same amount of thermal radiation? From wikipedia:
So suppose you had one blackbody at 100K and another at 500K. Is the radiation emitted by the cooler one not considered blackbody radiation? If so, why? [link] [comments]  |
| What is it on the atomic scale that makes materials either heat up/cool down slower? Posted: 29 May 2016 05:28 AM PDT |
| Posted: 28 May 2016 05:16 PM PDT |
| What is the symmetry of the nuclear force? Posted: 28 May 2016 04:00 PM PDT I know that the nuclear force isn't really a fundamental force, it's just a weird mechanic caused by the strong force at larger scales, but since it's treated as more of its own thing than magnetism is I would imagine it would have its own symmetry If I had to guess, I would say it's probably SU(2)xSU(2)xU(1) since it has two groups of three bosons (rho and pi) and a seventh (omega), but my knowledge is extremely spotty and I don't understand 99% of the math in play [link] [comments]  |
| What are the ripples next to the atoms in the movie 'A boy and his atom'? (link in description) Posted: 28 May 2016 08:11 AM PDT I was watching the movie made by IBM Research 'A boy and his atom' (link: https://www.youtube.com/watch?v=oSCX78-8-q0) and noticed there's ripples surrounding every atom (and even in some places where there appear to be no atoms but no idea if it has to do with something that had been there behind the scenes or something). I've read the atoms are carbon monoxide molecules, one atom on top of the other, on top of a copper substrate. Thanks in advance! [link] [comments]  |
| Is Quantum Tunneling a mechanism for Quantum Entanglement or are they separate? Posted: 28 May 2016 06:26 PM PDT |
| Can a neutron go straight through a nucleus? Posted: 28 May 2016 09:35 AM PDT If its fast enough I think it may be possible but maybe the amount of kinetic energy required will cause it to react anyway? [link] [comments]  |
| Would spraying boiling water over a fire put it out as effectively as room temp water? Posted: 28 May 2016 02:08 PM PDT Was thinking about sweating and water evaporating and somehow my mind stumbled on this question. I can think of a few different reasons why this may just be a bad question but figured I'd ask it anyway! Thought process here is: I guess pouring water on a fire cools it down both by direct heat transfer (water is cooler than whatever it is that's on fire) and by taking energy from the fire and evaporating (maybe this isn't accurate and my understanding of evaporation [and possibly also fire] is shitty?). So if water is already at or near boiling point, it needs less energy to evaporate and doesn't take as much from the fire? [link] [comments]  |
| Can a super powerful laser attached in a spaceship provide the spaceship with thrust? Posted: 28 May 2016 05:45 PM PDT Or is it like trying to throw a ball inside a spaceship which will result in 0 force?And if this could work,how much small force can a laser produce in a a spaceship? [link] [comments]  |
| What is the difference between p-branes, D-branes, M-branes, etc...? Posted: 29 May 2016 03:07 AM PDT What is the difference between these objects in string theory? Is there one? Also are the strings of string theory a type of 1-brane since they're 1D objects? [link] [comments]  |
| How much energy is required to alter earths orbit away from the sun? Posted: 29 May 2016 02:57 AM PDT I just read about the red giant phase of sol, where earth would be inhabitable. So lets say we make a ring around the equator line or on a pole during summer so we could "move" the earth. Is that possible with fusion energy etc.? (this is far into the future, so technology is there, and we have all the time in the world) [link] [comments]  |
| Posted: 28 May 2016 05:56 AM PDT |
| Why attraction/repulsion by diamagnetic or paramagnetic materials to an external magnetic field? Posted: 28 May 2016 07:25 AM PDT I cannot for the life of me figure out why diamagnetic materials are repulsed by an external magnetic field, I thought they had no magnetic moment. And also, if paramagnetic and ferromagnetic materials both have at least one unpaired electron, why do only some of them become permanent magnets? [link] [comments]  |
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