How can a Black Hole have rotation if the singularity is a 0-dimentional point and doesn't have an axis to rotate around? |
- How can a Black Hole have rotation if the singularity is a 0-dimentional point and doesn't have an axis to rotate around?
- How could I experimentally derive the speed of light with nothing more than a convenient store trip, basic household supplies, and a car?
- How deep would I have to dig into the earth to stop finding life?
- Are there significant nutritional differences between kale and other leafy Brassica oleracea cultivars (collards, brussel sprouts, etc.)?
- Does using my gas oven in winter "waste" energy?
- Do quantum effects affect DNA?
- Why is the Moon now considered a planet based on Alan Stern's findings?
- Calculating the volume of a pool of water on a flat surface?
- Why does the top quark never hadronize?
- Does the material inside a neutron star move much relative to itself?
- Can we detect exoplanets that do not transit their star?
- What is the difference between the dynamical Casimir effect and hawking radiation? You are creating real particles from virtual ones in both cases, right?
- What factors into a flame's size (like a candle's flame). And did anyone come up with a way to calculate something like that?
- Why are there only 2 fissionable isotopes?
- How does superglue or any other strong adhesive work on a molecular level? How and why does it make the two objects stick together without any chemical process?
- Why are Black holes black in spite of time dilation?
- Can we ever know if a mountain was taller than Everest in Esrth's history?
- Will a magnetic compass react faster the closer it gets to the magnetic north pole?
- How do Physicists actually come up with scientific formulas?
- Is something that smells losing mass?
- How close could a neutron star be formed without afecting the Solar System?
- How does oversampling affect Fast Fourier Transformation?
| Posted: 27 Feb 2017 04:53 AM PST |
| Posted: 26 Feb 2017 09:05 PM PST Obviously not rock hard limits on supplies, but the general idea is basic, cheap, materials that anyone could get. [link] [comments]  |
| How deep would I have to dig into the earth to stop finding life? Posted: 26 Feb 2017 02:05 PM PST I assume dirt, soil, earth is home to lots of different bacteria and organisms. So how deep would I have to dig to stop finding them? [link] [comments]  |
| Posted: 26 Feb 2017 08:50 PM PST |
| Does using my gas oven in winter "waste" energy? Posted: 26 Feb 2017 07:56 PM PST My wife and I had a science disagreement and I'm hoping some people here can lend me their opinion. My wife claims that using an oven frequently is inefficient and my argument is that in winter its irrelevant. Any energy you spend heating up the oven EVENTUALLY equalizes to the interior of the house which EVENTUALLY has a negative offset in the amount of time you have to run the central heating. While no one should use an oven to heat up their house for a variety of reasons (for example it doesn't circulate around the house very well) its technically very efficient. Our oven is gas and does not vent to the outside, so my understanding is that it has roughly a 100% efficiency rating at converting natural gas to thermal energy. Our central heating is a gas furnace. I'm not sure what the efficiency rating is but it's newer which seems to be around the 90% to 98% efficiency mark. Are there factors I'm not considering here? [link] [comments]  |
| Do quantum effects affect DNA? Posted: 26 Feb 2017 09:22 AM PST On wikipedia, the "Quantum Realm" is defined to be on the scale of 100nm, and DNA is described to be about 2nm in width. With these numbers, how is DNA able to maintain its structure? Shouldn't its constituent particles be able to occasionally tunnel out of the potential wells holding them in place? If so, why is this not a problem? If not, why not? [link] [comments]  |
| Why is the Moon now considered a planet based on Alan Stern's findings? Posted: 27 Feb 2017 07:12 AM PST What exactly does his new definition change that would count the Moon as a planet? And is it possible that in the near future this new definition become the more recognized definition? [link] [comments]  |
| Calculating the volume of a pool of water on a flat surface? Posted: 27 Feb 2017 05:15 AM PST Hi, this real life question recently popped up for me and I'm not sure how to tackle it. Assume there's a pool of water on a flat, non-porous surface (in this case, a tile floor). The pool of water is 16 square feet in surface area. How much water is actually in the pool? I'm not exactly sure how to calculate it because, to my mind, there's no definable depth to the pool because it's on a flat surface. So I guess my question is, when left to its natural state, how much water does it take to spread over a 16 square feet area on a flat surface? [link] [comments]  |
| Why does the top quark never hadronize? Posted: 26 Feb 2017 05:32 PM PST If the top quark has a half-life about one-twentieth of the time required for hadronization by the strong interaction, wouldn't one in a million top quarks hadronize? [link] [comments]  |
| Does the material inside a neutron star move much relative to itself? Posted: 27 Feb 2017 12:44 AM PST Neutron stars will have a rotation rate around an axis, but is it understood if the material/neutronium itself will move relative to other parts of the star? Or is the material more or less static, not withstanding some other new matter coming in (like if it eats another nearby planet/star/etc.) [link] [comments]  |
| Can we detect exoplanets that do not transit their star? Posted: 26 Feb 2017 03:47 PM PST It seems most of the exoplanets we discover are discovered when they transit across their star, but do we have any way of discovering planets in which the orbital plane does not transit the star? [link] [comments]  |
| Posted: 27 Feb 2017 05:37 AM PST |
| Posted: 27 Feb 2017 03:32 AM PST |
| Why are there only 2 fissionable isotopes? Posted: 26 Feb 2017 11:59 AM PST Theoretically, every isotope of every element can go through fusion. Why is this not true for fission? Why is it that only Uranium-235 and plutonium-239 are fissionable? Chemistry [link] [comments]  |
| Posted: 26 Feb 2017 05:11 PM PST |
| Why are Black holes black in spite of time dilation? Posted: 26 Feb 2017 05:50 PM PST Anything that falls into a black hole seems to slow down to a crawl to an outside observer because of time dilation effects. So shouldn't we be able to see all the stars that have fallen into the black hole frozen in time because of this instead of just blankness? [link] [comments]  |
| Can we ever know if a mountain was taller than Everest in Esrth's history? Posted: 26 Feb 2017 09:35 PM PST Is it possible for us to figure out if we've ever had a taller mountain? Or is everest the tallest mountain ever on earth? [link] [comments]  |
| Will a magnetic compass react faster the closer it gets to the magnetic north pole? Posted: 26 Feb 2017 12:04 PM PST My daughter and I built a water compass from a cork and needle earlier today and while we were playing around with it she asked me a question for which I was unable to find a definitive answer. Imagine three people were standing on the surface of the Earth, one just a few feet from the magnetic north pole, one just a few feet from the magnetic south pole, and one on the equator. Each of them has an identical water compass with them (it's not freezing or windy at the poles, so just go with that) and they're holding the needles south. They release the needles at exactly the same time. Would all three compasses point north at the same rate, or would they react faster as they approached magnetic north? My instinct is to say "yes, they would react faster" since they react to a handheld magnet much faster depending on how closely the magnet is held to the compass but I don't know if that theory scales up to planetary poles. [link] [comments]  |
| How do Physicists actually come up with scientific formulas? Posted: 26 Feb 2017 11:25 AM PST For eg, how did Newton actually come up with the gravitational force equation- Gm1m2/r2. How did he come up with the inverse square law? How did he calculate the value of G? What precise measurements he took? [link] [comments]  |
| Is something that smells losing mass? Posted: 26 Feb 2017 02:36 PM PST Take the smell of cookies baking in the oven. The wonderful smell fills my home. Are particles in the cookies going airborne? Something must be leaving the cookies for me to smell them in another room. So are the cookies losing mass? What becomes of whatever I'm smelling? Do I have cookie dust around the house? [link] [comments]  |
| How close could a neutron star be formed without afecting the Solar System? Posted: 26 Feb 2017 01:14 PM PST I'm curious about the magnitude of this phenomenon and how could it affect us. I'm also interested in knowing how much time might pass until the supernova becomes a stable neutron star. [link] [comments]  |
| How does oversampling affect Fast Fourier Transformation? Posted: 26 Feb 2017 11:31 AM PST |
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