How does heat propagate in a vacuum if there are no particles for it to move through? |
- How does heat propagate in a vacuum if there are no particles for it to move through?
- How does a lightning bolt "know" where to strike?
- What properties of beet juice make it a useful additive for combating snowy/icey roads?
- What in the brain gives certain memories for a rememberer a sense of 'sureness'?
- I've read about going bellow 0K, to which the article referred as "the highest possible energy state". Does that mean that temperature loops around at 0K and absolute zero is also absolute hot?
- What is the highest and lowest temperature that the human body can remain in direct contact with, without any damage?
- How deep is the sand on a typical sandy beach? If you dug straight down, what would you find underneath it?
- Is it possible to get 0ms ping through entanglement?
- In topology, does something without boundaries have a centre?
- I've heard that people with OCD feel like something terrible will happen if they don't give in to their compulsions. Is that terrible feeling related to or derived from the compulsion, or is a random fear?
- Why is Streptococcus so uniquely susceptible to penicillin class antibiotics?
- Given enough time, will a homogenous mixture of two non-identical liquids separate based on minute differences in density?
- Is there a sound analogue of one-way mirrors? Can we,do we have constructs that can look t sound through one way, but block it completely in the other direction?
- Frozen pattern on trampoline, how did it form in such a way?
- Why does thorium glass develop a yellow tint over time?
- If you were to create a material with a gradually increasing refractive index, would light follow a curved path through the material?
- Is there an animal that can jump high enough (or fast enough) to reach escape velocity of the Moon?
| How does heat propagate in a vacuum if there are no particles for it to move through? Posted: 09 Jan 2017 03:29 AM PST |
| How does a lightning bolt "know" where to strike? Posted: 09 Jan 2017 02:52 AM PST It's common that a lightning bolt will strike dominant points. But how does the strike know where the highest points are if he goes from top to bottom? [link] [comments]  |
| What properties of beet juice make it a useful additive for combating snowy/icey roads? Posted: 08 Jan 2017 04:41 PM PST Some municipalities in Canada are using white beet juice mixed with their road salt mixtures as an eco alternative. I'm curious what properties of beet juice make it useful in this purpose and if it's useful why not use entirely beet juice? [link] [comments]  |
| What in the brain gives certain memories for a rememberer a sense of 'sureness'? Posted: 08 Jan 2017 09:28 PM PST How are some memories rated by witnesses to an event from unsure to sure? [link] [comments]  |
| Posted: 09 Jan 2017 01:36 AM PST |
| Posted: 08 Jan 2017 03:27 PM PST For example, if someone were to create a heated or cooled suit to be worn during high/low temperatures. If a plate of some metal or plastic was in direct contact with the skin for an extended period, what range of temperatures could be used without causing damage to the body? Would this temperature be enough to keep someone warm during cold weather, or keep cool during the heat? Edit: Side question Assume we have a piece of metal exoskeleton that is being heated constantly at 98.6 F. On a cold day, where the temperature outside is fairly cold, you decide to use the "suit" for warmth. Would continued exposure to the metal cause any damages to the body? Would your body temperature rise to the exact temperature of the metal? [link] [comments]  |
| Posted: 09 Jan 2017 02:10 AM PST |
| Is it possible to get 0ms ping through entanglement? Posted: 09 Jan 2017 04:33 AM PST Title says it all. Was reading this article where quantum entanglement was briefly mentioned at the end hence got me curious. [link] [comments]  |
| In topology, does something without boundaries have a centre? Posted: 09 Jan 2017 12:11 AM PST Like the surface of a sphere, would it make any sense to talk about a centre or would every point be a centre? [link] [comments]  |
| Posted: 08 Jan 2017 08:01 PM PST This question came up because I've read comments on Reddit that went something like "if I don't wash my hands a thousand times my pets will die" or "if I don't triple-check the locks someone will date-rape my future daughter" when referring to a compulsion. Is the irrational fear somehow related to the compulsion? Is it always unrelated? Is it a hyperinflation of a separate fear that somehow gets absorbed by the OCD? Is it random? Is there perhaps a line that separates OCD from "normal" compulsions - so, for example, let's say a person is insanely afraid that a chainsaw murderer will attack them if they don't go around the house checking their locks fourteen times before going to bed. Would they be considered Obsessive-compulsive, or would it be considered somewhat "normal" because the need to check the locks is "logically" derived from the fear? And how would this compare with the "if I don't triple-check the locks" comment mentioned above? I hope my question is clear, and that my previous knowledge and understanding of OCD is accurate. [link] [comments]  |
| Why is Streptococcus so uniquely susceptible to penicillin class antibiotics? Posted: 08 Jan 2017 11:41 AM PST Currently a medical student on my internal medicine rotation and have run into a few cases of Group A strep cellulitis. Was wondering why this species hasn't developed resistance when every other case of staph infection is with MRSA now. [link] [comments]  |
| Posted: 08 Jan 2017 10:39 AM PST Would two liquids whose densities differ by say 0.001 g/ml separate given enough time? [link] [comments]  |
| Posted: 08 Jan 2017 02:58 AM PST |
| Frozen pattern on trampoline, how did it form in such a way? Posted: 08 Jan 2017 03:54 PM PST I went on my trampoline yesterday and it had froze, so i jumped on it a little. The ice shifted and formed a strange pattern. I had made a post on r/mildlyinteresting and was directed over here to figure out what caused the strange patterns to form on the trampoline. Here are two pictures pictures I took as well as 2 videos showcasing the pattern [link] [comments]  |
| Why does thorium glass develop a yellow tint over time? Posted: 08 Jan 2017 01:40 PM PST Some time ago radioactive thorium oxide was used to create glass with high refractive indices for use in the lens making industry. Examples of this glass have gained a yellow tint over time. What causes this coloration? [link] [comments]  |
| Posted: 08 Jan 2017 12:54 AM PST |
| Is there an animal that can jump high enough (or fast enough) to reach escape velocity of the Moon? Posted: 08 Jan 2017 11:17 AM PST Edit: I should have picked my words better. What about any living organism (i.e. insects). [link] [comments]  |
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