Why are we colder when wet? |
- Why are we colder when wet?
- Do microwaves kill bacteria?
- Did the introduction of antidepressants have any effect on suicide rates?
- If a stalactite or stalagmite were constantly exposed to air currents as they formed, would they grow in a slanted or curved direction?
- Is there a material that can change permeability based on electric charge?
- How do birds maintain spatial orientation in clouds?
- What does it mean that if you pull quarks apart, the energy required to do that creates more quarks beside each so there is never a lone quark?
- If liquid helium becomes too scarce and expensive, is there another substance that MRI machines can use for cooling?
- What is really happening in this natural phenomenon?
- How quickly does a diluted solution homogenize?
- How come moon's soil is rich in helium-3 when it has a very low escape velocity?
- Can a function that is identically 0 for x>a have a continuous derivative everywhere if for some x0 < a f(x0) > 0, f'(x0) < 0?
- What is the main source of protein for large herbivores?
- Is the sun (and any large body) surrounded by a layer of dark matter?
- With an aerodynamic shape, suitably powerful engines and a proportianate wingspan, could an aircraft of immense size still fly? Like, say, one the length and width of an average aircraft carrier?
- How do we collect information about children's thoughts before they can speak?
- Would it have been possible to watch the moon landings on earth?
- Does Earth's water escape into space? If so, will the planet eventually run out of water?
- How Geologist do calculate the elevation of terrain?
- Why does melting ice caps mean rising sea level?
- If it were possible for a star the size of a basketball to exist, how much energy would it produce, and how long would it take for it to expend all of it's hydrogen?
- Photons are continuously exchanged between electric charges - What is the source of this energy?
- If the Higgs mechanism explains how things have the property of mass, are similar mechanism needed to explain properties like electric charge?
| Posted: 21 Feb 2017 04:36 AM PST |
| Posted: 20 Feb 2017 09:51 AM PST I've always wondered if a microwave oven could be used as a disinfectant. Does it kill bacteria outright? Or is it the created heat in food/other elements that does the trick? [link] [comments]  |
| Did the introduction of antidepressants have any effect on suicide rates? Posted: 20 Feb 2017 09:57 PM PST |
| Posted: 21 Feb 2017 04:37 AM PST |
| Is there a material that can change permeability based on electric charge? Posted: 21 Feb 2017 07:00 AM PST Imagine a membrane or valve that could open or close by introducing a current, changing polarity. Is there anything like this? Or being developed? [link] [comments]  |
| How do birds maintain spatial orientation in clouds? Posted: 20 Feb 2017 07:36 PM PST Human experience in aviation has firmly cemented that trusting your vestibular system for orientation without reference to a horizon is impossible. The rate of error accumulation in your inner ear is rapid and results in aircraft in dangerous attitudes which pilots may not recognize if they do not have an artificial horizon (FAA Reference). My question is - do birds have similar trouble? How to do they maintain orientation in a cloud if they do not have a reference to the horizon? If they lose orientation, how would they regain it? Finally, and mostly out of curiosity, what are the limits of the environment that birds fly in? Will they fly into extreme up/downdrafts? Mountain wave? Icing conditions? [link] [comments]  |
| Posted: 21 Feb 2017 06:16 AM PST Unlike the attraction of magnets or planets, quarks are attracted more the farther apart they get, at least when they're very close. Does it mean quarks are virtual particles (only representing vectors)? Does it mean space is an incompressible fluid of quarks where the "empty space" is made of some neutral combination of quarks? [link] [comments]  |
| Posted: 21 Feb 2017 07:14 AM PST |
| What is really happening in this natural phenomenon? Posted: 21 Feb 2017 03:26 AM PST Photos of the phenomenon Credit to Kjell H. Sæther for the photos. They were taken the night before February 20th 2017 in Karasjok, Norway. I've been told that this happens only when there's no wind, very cold (-25 celsius at the time) and has something to do with ice particles in the air. I assume the ice particles reflect the lights, but why does the light seem to form pillars? [link] [comments]  |
| How quickly does a diluted solution homogenize? Posted: 21 Feb 2017 04:48 AM PST If I dissolve a compound in a solution of water and then were to dilute that solution, how quickly does the dissolved compound disperse evenly throughout the entire volume? Does the compound being dissolved play a role in the time it takes to homogenize? Does the concentration of the dissolved compound play a role in the time it takes to homogenize? In particular I am noticing a strange phenomenon when dissolving sodium lauryl sulfate in water and then diluting it with more water. Next adding Caltaine C-35, followed by glycerine once it appears everything has dissolved. After adding fragrance to this mix the final sometimes turns out the have the consistency of slime and then sometimes has the consistency of water. The amount of each compound is the same as well as the temperature each time. The only difference I can find is that when allowing the SLS a decent amount of time to mix and then allowing the C-35 a decent amount of time that the solution comes out with the consistency of water every time. [link] [comments]  |
| How come moon's soil is rich in helium-3 when it has a very low escape velocity? Posted: 20 Feb 2017 10:35 PM PST |
| Posted: 20 Feb 2017 06:35 PM PST Asking this in the context of possible wavefunctions in a potential well. If a function goes to zero at some finite value but is nonzero before it, can its derivative be continuous across that interchange? It seems to me like there must be a cusp at x = a, but my real analysis background is too limited to verify this. [link] [comments]  |
| What is the main source of protein for large herbivores? Posted: 20 Feb 2017 04:21 PM PST Where does the protein needed by animals like horses or cows come from in the wild, other than the milk they had when they were still young? Do they get everything they need just from grass and some grains? If they do, wouldn't they need to eat way more than their own weight every single day, due to the small quantities of fats and protein grass has? [link] [comments]  |
| Is the sun (and any large body) surrounded by a layer of dark matter? Posted: 21 Feb 2017 12:32 AM PST I was listening to the Infinite Monkey Cage yesterday and they were saying that dark matter doesn't interact with normal matter in any way, except gravitationally. Does this mean that you could have huge, thick layers of dark matter orbiting stars and planets, but we just wouldn't be able to tell because we can't detect them? [link] [comments]  |
| Posted: 20 Feb 2017 03:40 PM PST |
| How do we collect information about children's thoughts before they can speak? Posted: 20 Feb 2017 09:10 PM PST Specifically, this question comes from me reading a Sociology textbook, in a portion talking on self-identity that says "Children do not grasp concepts such as 'I', 'me', and 'you' until age two or later." How would we collect information on this idea, and how can we infer that the information is definitively indicative to the absence of a child's understanding of self? [link] [comments]  |
| Would it have been possible to watch the moon landings on earth? Posted: 20 Feb 2017 05:33 PM PST Is there a powerful enough telescope that would allow a person here on earth to view the moon landings clearly? If so, is there anyone that that is known to have done it? [link] [comments]  |
| Does Earth's water escape into space? If so, will the planet eventually run out of water? Posted: 20 Feb 2017 05:05 PM PST |
| How Geologist do calculate the elevation of terrain? Posted: 20 Feb 2017 08:43 PM PST |
| Why does melting ice caps mean rising sea level? Posted: 21 Feb 2017 04:04 AM PST When you drop some ice in water, mark the water level, wait for it to melt, the water level will stay the same, but why will the polar caps be any different? Shouldn't the sea level stay the same like the glass and the ice cube? I hope I explained my question well and thanks in advance! [link] [comments]  |
| Posted: 20 Feb 2017 10:38 PM PST I have been googling around and haven't been able to find any answers to this question, so I was wondering if it would be possible to calculate the answer to this question, based on our current understanding of how fusion works? [link] [comments]  |
| Photons are continuously exchanged between electric charges - What is the source of this energy? Posted: 20 Feb 2017 08:22 PM PST According to the Standard Model of particle physics (from what I understand), electric charge is mediated by photons. This means that the attraction/repulsion you feel between magnets is caused by photons continuously exchanged between the two materials. Where is that energy coming from?? Is it the "spin" of each electron? If so, what is powering the non-stop continuous spin of each electron? The electron's interaction with the Higgs field? [link] [comments]  |
| Posted: 20 Feb 2017 11:57 AM PST |
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