Do dogs of one breed prefer to be with their own breed over others or are they all just dogs to them? |
- Do dogs of one breed prefer to be with their own breed over others or are they all just dogs to them?
- Would electron degenerate matter behave similarly to a solid, gas, or liquid?
- In the '60s, chemist and Nobel laureate Glenn Seaborg predicted "islands of stability" amongst the superheavy elements. Is this hypothesis still plausible, and how well does the evidence support it?
- Why do plants turn yellow when they are dehydrated?
- Are you at greater risk of sunburn up on a mountain?
- How do the properties of air affect sound transmission?
- Why are there no anti-derivatives for some functions (eg sinx/x, sin(x^2), x^x) when one can easily be graphed?
- Do our genetics play a big role in mate selection?
- Why does splitting an atom create so much energy?
- Is dark matter slowly condensing towards the galactic center due to gravity?
- Does a healthy person's blood look any different to an unhealthy person's blood under the naked eye?
- do men genetically carry female traits?
- Is there any way to gauge the age of magma as it leaves a volcano, and, if there is, would the age of that magma be pretty consistent from volcano to volcano?
- How were the heavy metals from iron Uranium made?
- When is stationary flow approximation valid ?
- How do gums adhere to jaw bone?
- Why can’t we see stars in the picture of Earth taken from Mars?
- Do photons ever not take the simplest path when traveling to their destination?
- With NASA's Kepler telescope nearing the end of its life cycle, what are some of its notable contributions?
- In quantum field theory, where does the energy that is causing quantum fluctuations coming from?
- Is dark matter uniformly distributed throughout the universe or is it concentrated in specific areas?
| Posted: 07 Jul 2018 06:11 AM PDT |
| Would electron degenerate matter behave similarly to a solid, gas, or liquid? Posted: 06 Jul 2018 12:43 PM PDT In the book "The Collapsing Universe" by Isaac Asimov, he claims that degenerate matter would behave like a gas. He explains that while the electrons are compressed into a free flowing goo, the nuclei still remain relatively spaced out, and would thus act like a gas. Given that this book was written in the early '70s, is this an accurate statement, or do we have a better understanding of degenerate matter? [link] [comments]  |
| Posted: 07 Jul 2018 07:03 AM PDT As most readers of this sub are likely aware, elements heaver than Uranium are, generally speaking, unstable. However, since the 1930s (?), scientists have been creating superheavy, "synthetic" elements in the laboratory, the heaviest of which being element 118, which was first created in 2002. Now, generally speaking, these elements typically have very short half-lives, rapidly decaying into lighter elements. However, in the late 1960s, famed chemist Glenn Seaborg proposed that certain superheavy elements (somewhere around 120) might be stable -- or, at least, metastable (?). Although nuclear chemistry is not my field, I can only assume that when Dr. Seaborg first proposed this notion, it was reasonable and plausible given the evidence available at the time. However, I can also only assume that the state of the evidence has changed somewhat in the 50 years since then. Thus, my question: In light of modern research/models/et cetera, how plausible is the "island of stability" hypothesis, and how strong is the evidence supporting it? How has the state of the evidence changed since Dr. Seaborg first proposed this hypothesis? Thank you. [link] [comments]  |
| Why do plants turn yellow when they are dehydrated? Posted: 07 Jul 2018 05:40 AM PDT It's hotter than normal in the UK right now and grass everywhere is changing from green to yellow due to the lack of water. Does the chlorophyll break down? I would have thought that if you increase the concentration of it the plants would become greener when dehydrated [link] [comments]  |
| Are you at greater risk of sunburn up on a mountain? Posted: 06 Jul 2018 12:31 PM PDT I remember being told that sunburns are more likely when you're up in the mountains because the air is thinner. And that's why Andean peoples wear wide brim hats most of the time. And I think my own experience matches that. I've burnt pretty quickly when up in mountainous terrain. But I also know (believe) that UV is mostly blocked by the ozone layer. And the ozone layer goes from 33,000 feet to 165,000 feet. So even on top of Everest you're fully under it. So it shouldn't matter how high you walk. You should still be protected. So what's going on? Which part of what I think I know is wrong? [link] [comments]  |
| How do the properties of air affect sound transmission? Posted: 07 Jul 2018 05:53 AM PDT How do the properties of air--such as: humidity, temperature, dust, pollen, precipitation, etc.--affect sound transmission? As a bit of a bonus question: is sound below cloud cover likely to be reflected by the clouds or absorbed by it? I recently moved into a house a few miles from a major airport and on some days it's very apparent how close the airport is, but on other days it's easy to forget that it's there. I haven't objectively measured the sound levels so maybe there is some subjective bias at play, but I was curious if perhaps there could be something about the air that is affecting the way sound moves through it. [link] [comments]  |
| Posted: 06 Jul 2018 09:16 AM PDT For instance, there is no anti-derivative for sinx/x, (though strange enough pi/2 is the answer to its integral from 0 to infinity) but yet it can be graphed here: https://i.redd.it/9ltisgukrc811.png [link] [comments]  |
| Do our genetics play a big role in mate selection? Posted: 07 Jul 2018 06:45 AM PDT |
| Why does splitting an atom create so much energy? Posted: 07 Jul 2018 12:11 AM PDT |
| Is dark matter slowly condensing towards the galactic center due to gravity? Posted: 06 Jul 2018 07:49 AM PDT So, unlike normal matter, dark matter can't clump together and will never form objects or even atoms, it will forever be single particles, I get that part. But it still has mass and interacts gravitationally with itself and normal matter. There is more mass at the centers of galaxies, and also more dark matter (because it was creater there, I assume? Or did it move there?) Given very very long time, would the dark matter halo become smaller and denser, more concentrated towards the middle? Maybe there is a difference already between new galaxies having a more diffuse dark matter halo and older ones being more compact? Bonus question: given infinite time and no heath death of the universe (say it wasn't expanding), would all matter eventually condense into one gigantic black hole at the common gravitational center of everything? [link] [comments]  |
| Does a healthy person's blood look any different to an unhealthy person's blood under the naked eye? Posted: 07 Jul 2018 02:33 AM PDT I'm a blood donor and the nurse today told me that my blood looked healthy, I consider myself to be fairly healthy and I'm just curious if you can actually tell the difference just by looking at it. [link] [comments]  |
| do men genetically carry female traits? Posted: 06 Jul 2018 02:55 PM PDT For example do the father's genes have a say in breast size or uterine size, or is are these 'female' genes only brought forth by the mother? [link] [comments]  |
| Posted: 06 Jul 2018 08:17 PM PDT |
| How were the heavy metals from iron Uranium made? Posted: 06 Jul 2018 02:06 PM PDT |
| When is stationary flow approximation valid ? Posted: 06 Jul 2018 03:01 PM PDT I am doing a fountain experiment for school, and my theoretical approach depends heavily on the Darcy Weisbach equation. However, the flow is not completely stationary in the sense that the mean speed of the fluid changes slightly with time(maximum 0.1m/s^2). Under these conditions is the Darcy equation still a good approximation ? Does someone know any papers that discuss this? Thanks in advance. [link] [comments]  |
| How do gums adhere to jaw bone? Posted: 06 Jul 2018 09:04 PM PDT I couldn't figure out what to Google for the answer to this. How do your gums stick to the bone? Are there cell surface receptors that interact between the two tissues? [link] [comments]  |
| Why can’t we see stars in the picture of Earth taken from Mars? Posted: 06 Jul 2018 05:11 PM PDT I can link the original image from NASA but my question is that if Mars has absolutely no (or very little) light pollution, and it has a thinner atmosphere shouldn't the night sky be lit up with tons of stars? Does this have anything to do with bending of light and or the abundance of methane in its atmosphere? Or is it possible that you would see tons of stars and this is just another doctored NASA image? [link] [comments]  |
| Do photons ever not take the simplest path when traveling to their destination? Posted: 06 Jul 2018 08:39 PM PDT So I was just watching this YouTube video and I am not a scientist in anyway, just a curious person: the video was saying that when photons bounce off a mirror, it's not that they are told to do so but that they will actually follow an infinite path and that the common path being it's reflection is the simplest path so it follows that one. Do photons ever not follow this "simplest" path? Any response would be appreciated I just want to learn more about how photons act and why they take this simplest path. Also, why is it that anything takes the simplest path as opposed to any random path? [link] [comments]  |
| Posted: 06 Jul 2018 07:48 PM PDT |
| In quantum field theory, where does the energy that is causing quantum fluctuations coming from? Posted: 06 Jul 2018 07:17 PM PDT |
| Posted: 06 Jul 2018 11:18 AM PDT From what I've heard we don't know what dark matter is but we know it exists by observing its effects on other things in our universe. Do these observations tell us where it is? [link] [comments]  |
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