What happens to the speed of photons emitted by a moving light source? Do they travel faster than the speed of light, c? |
- What happens to the speed of photons emitted by a moving light source? Do they travel faster than the speed of light, c?
- For animals with better hearing than humans, are sounds comparatively louder?
- Are there cultural reasons behind SVO or SOV word orders in languages? Or is it just whatever stuck?
- Why was I in a earthquake if I'm nowhere near a fault line?
- How do Not Gates work?
- How can atomic orbitals be described as standing waves if they have no physical boundaries?
- What considerations or procedure is used to maintain correct orbit while thrusting to dock wit hthe ISS ISS?
- Does Polynomial interpolation work with n-1 times the same supporting point xi and 1 thats different?
- How do humans counteract the Dzhanibekov effect (phenomenon responsible for the "Tennis Racket Theorem") when doing layout front and back flips? Shouldn't all human flips have at least half a twist?
- Is there a non-geometric equivalent to Einstein's theory of general relativity?
- Can fog form in caves?
- Does the expanding universe, in any sense, temper the gravitational effects of massive objects. In other words, does the expansion of the universe smooth out space-time at all?
- What happens to whales and other ceteceans during a really violent storm/hurricane?
- Are Immortal cell lines affected by telomeres shortening?
- Do birds sleep longer in the Winter?
- What is a precursor wave?
- Does actual computing require energy?
| Posted: 06 Jul 2017 04:29 AM PDT |
| For animals with better hearing than humans, are sounds comparatively louder? Posted: 05 Jul 2017 06:12 PM PDT |
| Are there cultural reasons behind SVO or SOV word orders in languages? Or is it just whatever stuck? Posted: 06 Jul 2017 02:53 AM PDT |
| Why was I in a earthquake if I'm nowhere near a fault line? Posted: 06 Jul 2017 12:21 AM PDT Sorry if this a dumb question but I'm in northern Montana and if I recall...there are no fault lines near me. [link] [comments]  |
| Posted: 06 Jul 2017 02:42 AM PDT I totally understand how OR and AND gates work in real life, but could someone explain the physical process involved in a Not gate? I can only visualise a Redstone torch on top of a powered block :D [link] [comments]  |
| How can atomic orbitals be described as standing waves if they have no physical boundaries? Posted: 05 Jul 2017 03:11 PM PDT According to Orbital Theory atomic orbitals can be described as standing waves. Analogies such as vibrating strings or planes are often used to explain this. What both these analogies have in common is that for a string or a plane to swing as a standing wave they need to have boundaries at which their amplitude is always zero. A string is bound by two nodes, in the simplest case a plane is bound by a circle. Thus, for a wave in three dimensions I would expect a standing wave to require at least a sphere in which the amplitude is bound to be zero. However, with 1s orbitals in particular we observe no nodes whatsoever. In fact, the maths predicts that an electron occupying that orbital would have a non-zero probability of being detected anywhere. How is this still a standing wave? [link] [comments]  |
| Posted: 05 Jul 2017 06:33 PM PDT When a capsule is reaching the ISS after phasing orbit, what effects do the final adjustments to get close to the iss have in orbital speed and altitude? Can they just point and shoot, or does that method bring them off course some how in the orbit path? [link] [comments]  |
| Posted: 06 Jul 2017 02:57 AM PDT first, english is not my mother language... so dont hate me too much. So when i do polynomial interpolation, and i have n different supporting points, i can build a lagrange polynom(Li(x)) and do the standard interpolation fn(x) = sum(f(xi) *Li(x)) and if i have 1 supporting point, I could simply do a taylor approximation https://en.wikipedia.org/wiki/Taylor_series with n times the supporting point "a" but what if i have n-1 times the same point a and 1times b?` i learned that in general the system matrix that contains the base-funktions with the different supporting points, has to have full rank. so that i can get a unique solution, but why does it matter if i can solve it for 1solution i have a solution and dont have to care if ther are more? [link] [comments]  |
| Posted: 05 Jul 2017 03:30 PM PDT |
| Is there a non-geometric equivalent to Einstein's theory of general relativity? Posted: 05 Jul 2017 11:13 AM PDT If I understand correctly, the geometric approach is what makes this theory so elegant. I wonder if there exists a theory that takes a non-geometric approach and agrees with the general theory of relativity on all (or most) findings at the expense of simplicity. EDIT: a bit more clarification after a deleted comment:
GR abandons the idea of gravity as a force instead treating it as space-time curvature. I suppose related to this is the formulation of the theory with the help of tensor analysis. So my question can be broken down into the following: (1) is there a way to use some sort of heavily modified Newton's force approach on flat space-time to arrive at the same conclusions, and (2) is there a way to formulate the theory in terms of something different than tensors (similar to how geometric vectors can be treated purely algebraically by creating a coordinate system). [link] [comments]  |
| Posted: 05 Jul 2017 07:53 PM PDT It's a common depiction in video games like Skyrim, but does it really happen? If so, how common is it? I imagine most caves don't have enough water. [link] [comments]  |
| Posted: 05 Jul 2017 09:44 PM PDT |
| What happens to whales and other ceteceans during a really violent storm/hurricane? Posted: 05 Jul 2017 09:56 AM PDT (I know this might be a stupid question, but hell i aint no biologist.) Can they get sufficient air when surfacing or do they have trouble breathing because of super-choppy water conditions? Anyone ever seen any research on this? Are there loads of dead whales and dolphins left in the wake of hurricanes? (Posted this in r/showerthoughts earlier without much response) [link] [comments]  |
| Are Immortal cell lines affected by telomeres shortening? Posted: 05 Jul 2017 10:56 AM PDT Wikipedia says: "An immortalised cell line is a population of cells from a multicellular organism which would normally not proliferate indefinitely but, due to mutation, have evaded normal cellular senescence and instead can keep undergoing division." What are those mutations?, are they related to telomeres?, if not, how those telomere shortening affect this kinds of cells? [link] [comments]  |
| Do birds sleep longer in the Winter? Posted: 05 Jul 2017 08:08 PM PDT Birds only "tweet" during daylight hours so if they are sleeping when it is dark does this mean they sleep longer during the extended darkness of Winter hours? [link] [comments]  |
| Posted: 05 Jul 2017 12:44 PM PDT How does a precursor wave work? As I understand, during nuclear explosions there are different stages to the blast wave and one of them is a precursor wave, which travels faster than the main blast wave. Why does it travel faster from the main explosion shockwave? [link] [comments]  |
| Does actual computing require energy? Posted: 05 Jul 2017 09:20 PM PDT What does the power supplied from the wall do other than heating up circuitry, spinning some fans and maybe lighting up some LEDs? Is power drawn from a chip completely turned into heat or does some of it magically disappear? I don't think the latter is true but some comments under some youtube videos make me question myself like "power drawn isnt equal to heat dissipated, there is efficiency, some power is used to run the gpu, blah". I concluded that electronic computers without lights or mechanical parts are physically literally %100 efficient space heaters, is this true? Edit: I know how computers work mathematically, just the conservation of energy didn't add up. I thought: Power in = resistive heat loss + friction heat loss from fans + fan kinetic energy + lights +?? ?? Turns out to be switching transistors requiring potential energy to store the current state Thanks for the downvotes also [link] [comments]  |
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