Do changes in the Earth's rotation influence earthquakes? |
- Do changes in the Earth's rotation influence earthquakes?
- A "biohacker" with a PhD in biophysics says he's modified his DNA with CRISPR. What's the reality of this?
- Why did the Apollo CSM not have solar panels?
- Why are solar-powered turbines engines not used residentially instead of solar panels?
- How does a black hole gain mass if it takes an infinitely long time for matter to cross the event horizon?
- Can insects get concussions?
- Why can’t we remember much from our infancy?
- If a p value of p=.01 was obtained does that mean that the likelihood of my results being due to sampling error would be 1% or 99%?
- Could the volume inside a black hole's Schwarzschild radius be infinite?
- Can someone explain me the basis of a quantum gate? (quantum computing)
- Do aerodynamics and hydrodynamics differ in any meaningful way other than density?
- How do Helicases and associated mechanisms know how to do their tasks?
- What is the most efficient way to capture carbon from the air?
- Colleague did a Cluster Analysis. But what do the clusters "mean"?
- Why doesn't glue dry in the bottle?
- If hurricanes swirl counter-clockwise in the northern hemisphere and clockwise in the southern hemisphere, which way do they turn on the equator?
- Water expands when frozen. If rising temperatures cause this expanded ice to melt, why would sea levels go up instead of down?
- What determines the distribution of energy between an electron and a neutrino in Beta Decay?
- What are some issues that quantum field theory and general relativity have that make it so they don’t match?
- Do two repulsive magnets gain or lose energy when being forced together?
- Why does water become like concrete at a high enough fall?
- Imagine I detect (localize) a particle at one location, and wait a short period of time to let its probablility distribution "spread out". Does this probability go to zero at some finite distance away, based on how long I wait?
- Why are thick nichrome bars used as the heating element in ovens?
| Do changes in the Earth's rotation influence earthquakes? Posted: 19 Nov 2017 11:48 AM PST This article claims that changes in the earth's rotation contribute to more earthquakes: On the surface this seems like junk science, but I'm not really qualified to say for sure. Can anyone clarify? If so, are there any ideas as to how this works? [link] [comments]  |
| Posted: 19 Nov 2017 10:19 AM PST |
| Why did the Apollo CSM not have solar panels? Posted: 19 Nov 2017 10:51 PM PST The Soyuz Craft have always had solar panels, even today, yet the Apollo, Gemini, Mercury and Space Shuttle Orbiter, which did things similar to Soyuz (rendezvous and long duration docking) used only fuel cells. [link] [comments]  |
| Why are solar-powered turbines engines not used residentially instead of solar panels? Posted: 20 Nov 2017 05:00 AM PST I understand why solar-powered stirling engines are not used in the power station size, but why aren't solar-powered turbines used in homes? The concept of using the sun to build up pressure and turn something with enough mechanical work to turn a motor seems pretty simple. So why aren't these seemingly simple devices used in homes? Even though a solar-powered stirling engine has limitations, it could technically work too, right? I apologize for my question format. I am tired, am very confused, and my Google-fu is proving weak. [link] [comments]  |
| Posted: 19 Nov 2017 08:19 PM PST |
| Posted: 19 Nov 2017 07:54 PM PST |
| Why can’t we remember much from our infancy? Posted: 19 Nov 2017 08:34 PM PST |
| Posted: 19 Nov 2017 09:56 AM PST I am finding it hard to get my head around so if someone could explain to me I would be very greatful! [link] [comments]  |
| Could the volume inside a black hole's Schwarzschild radius be infinite? Posted: 19 Nov 2017 08:19 AM PST To keep things imaginable, picture a black hole in 2 dimensions (the ball-rubber sheet view). As the ball becomes denser, the well in the rubber sheet deepens. At infinite density, we should reach an asymptote in which the well is infinitely deep. Now, consider Gabriel's horn. To construct this, plot y = 1/x from x=1 to infinity and rotate it around the x-axis, resulting in this. While having a finite volume, it's surface area is infinite. What I'm wondering is, does this translate to black hole physics at all? Back to the rubber sheet model, could a black hole create an infinite surface area (on the rubber sheet) along the same lines of thinking? As we go from 2D to 3D area becomes volume, so could the volume be infinite? [link] [comments]  |
| Can someone explain me the basis of a quantum gate? (quantum computing) Posted: 20 Nov 2017 02:58 AM PST Hello so i just tried to understand the basis of the basis. I know only few people work on that so my luck are small to find here. Anyway a lot of folks are interested in the subject so maybe one of you know. I understand how work a logic gate (binary), also a transistor, a full adder. I would like to get how the things are done, i mean not really all the complicated things just the principe but a bit more in depth that explaining "there is an other state between 0 and 1 and this give power".. Maybe an example of what happen, we put what in order to create a quantum logic gate, like some electrons, some material, and how the maths work for the simplest quantic gate, like for example maybe what we can make in addition of NOT XOR etc, and how we make it or the principles of it. thanks quantic people [link] [comments]  |
| Do aerodynamics and hydrodynamics differ in any meaningful way other than density? Posted: 20 Nov 2017 06:13 AM PST |
| How do Helicases and associated mechanisms know how to do their tasks? Posted: 20 Nov 2017 08:23 AM PST I just saw a Veritasium video about DNA replication and cell spitting and was astounded by how the little molecular mechanisms were working like they had brains of themselves... So how is it exactly that these "molecules" know exactly what to do when it is such a complex task? [link] [comments]  |
| What is the most efficient way to capture carbon from the air? Posted: 19 Nov 2017 07:20 PM PST |
| Colleague did a Cluster Analysis. But what do the clusters "mean"? Posted: 20 Nov 2017 05:00 AM PST I've been asked to review a paper by a new post-doc on weather records (snow cover) for the country, and how it has changed (decreased, of course!) over the years. Part of the paper is a cluster analysis of about 100 weather stations' snowfall records. He used some stat software and grouped them into 6~8 clusters. My question is, "Well, what do these clusters mean? What do they represent? Is one cluster snow totals in high mountain elevations and another cluster snow totals near lakes?" To which the post-doc (who has never impressed me with his science fundamentals, but he is more literate than me on this topic because he is writing a paper on it...god, I hope he is more literate than me) basically replied, "Doesn't matter, they're clusters and that's what the cluster analysis program output says. You should read up about cluster analysis." I am about as (il)literate in cluster analysis as a 1-hour Wikipedia dive and a few papers can make. But I have a gut feeling that cluster analysis just to make clusters with no meaning is about as senseless as finding Jesus in pieces of toast. That the cluster analysis may be completely mathematically sound, but if there is no explanation as to what the clusters actually represent, the only value is that they might represent some pattern that will be revealed later? Or that they represent some pattern that can be useful even if the underlying meaning is not known..yet some inkling as to what the pattern might be would help more than just "These 5 data points in the set of 100 seem to be a similar enough to be a cluster when analyzed at this level." So, apart from the obvious that I need to keep studying, is my instinct wrong? Do clusters without a "story" nor even a glimmer of a "story" actually have any practical use? And even if there is no practical use, is that still "good enough" for publication (in that maybe someone else will figure out the pattern of the clusters)? [link] [comments]  |
| Why doesn't glue dry in the bottle? Posted: 19 Nov 2017 11:00 AM PST |
| Posted: 19 Nov 2017 04:11 PM PST |
| Posted: 19 Nov 2017 07:54 PM PST |
| What determines the distribution of energy between an electron and a neutrino in Beta Decay? Posted: 19 Nov 2017 12:43 PM PST I am studying Physics and as part of the course I have to know that the energy of Beta particles varies up to a maximum due to the emission of a neutrino as well. However what determines how the energy is split between the electron and neutrino? After searching the internet the best answer I have found is that it is random but I am not entirely satisfied with that answer. [link] [comments]  |
| Posted: 19 Nov 2017 03:51 PM PST |
| Do two repulsive magnets gain or lose energy when being forced together? Posted: 19 Nov 2017 09:24 PM PST |
| Why does water become like concrete at a high enough fall? Posted: 19 Nov 2017 08:38 PM PST |
| Posted: 19 Nov 2017 08:37 PM PST I just saw a question like "what is the probability that an electron from the other side of the Earth is in my room. This made me wonder. AFAIK, an electron's probability distribution in space extends infinitely, but with an exponential decrease the further out you go. Does this not mean that an electron prepared in some localized state has a non-zero probability of traveling faster than the speed of light? The only way around this is if the probability distribution in space went to zero at some finite distance away, that is related to the amount of time it's been since the electron was localized earlier. This distance being c*t. Is this right? Is this idea explained anywhere? [link] [comments]  |
| Why are thick nichrome bars used as the heating element in ovens? Posted: 19 Nov 2017 11:14 PM PST The heating element needs to have high resistance, which is why we use nichrome. But isn't it a better idea to use thin bars since it has a higher resistance which means more heat released? [link] [comments]  |
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