If I have a column of water 100' tall and 2 meters in diameter and I scuba dive to the bottom of that, is the pressure the same as if I were 100' down in the ocean? |
- If I have a column of water 100' tall and 2 meters in diameter and I scuba dive to the bottom of that, is the pressure the same as if I were 100' down in the ocean?
- Why do the laws of thermodynamics seem to be immutable by time, gravity, etc.?
- Why can we digest fats but not plastics when both are mostly hydrocarbon chains?
- How did beavers pass down the ability to build dams?
- What is the difference between general and special relativity?
- will mass from a Neutron star "expand" into known elements if removed from the gravitational effects of the star ?
- What is the smallest possible Goldilocks zone for any star?
- Which is more toxic Br or Cl gas and why?
- Why does the Milky Way make a U shape across the sky?
- Why is the Doppler shift equation for mechanical waves different for a moving emitter and a moving listener?
- How to describe the interactions between two wave functions?
- Is there a conflict between Klein's paradox and Black holes?
- what would happen if one stopped having social contacts?
- If I had a steel tube, say 2" in diameter, vacuum sealed and 30,000' high and dropped a marble down it, would that marble create a huge crater bursting through the bottom into the earth since terminal velocity has been removed?
- How does proton decay time work?
- Why is the sphere of influence of a planet like Neptune or Saturn larger than that of Jupiter?
- Why does the Jacobian for polar coordinates looks similar to the rotation matrix around the z-axis?
- Are quarks and electrons really indivisible?
| Posted: 04 Apr 2016 08:37 AM PDT I went to the aquarium this week and while watching the fish in the tank, I wondered if the pressure was the same at the bottom of the tank as in the ocean. I know pressure edited for accuracy... [link] [comments]  |
| Why do the laws of thermodynamics seem to be immutable by time, gravity, etc.? Posted: 05 Apr 2016 04:14 AM PDT In the past 200 years of science we have seen that many laws of nature have an limit when confronted with high acceleration, immense gravity fields, high energy/heat, etc. Only thermodynamics we seem to have an undying faith that it will never change or break down. In many discussions related to black holes, the death and potential rebirth of our universe, etc - the obedience of thermodynamics is a primary concern (see for exmaple https://en.wikipedia.org/wiki/Ultimate_fate_of_the_universe#Big_Crunch). Compared to other laws of nature that scientists seem to have doubts over if they will even function properly under similar conditions. [link] [comments]  |
| Why can we digest fats but not plastics when both are mostly hydrocarbon chains? Posted: 05 Apr 2016 12:04 AM PDT For example, some saturated fats differ from polyethylene only in the chain end group (and total length). Is 'cracking' that end group the key to unraveling the rest of the chain? If so, what's so hard about breaking an extra C-H bond? [link] [comments]  |
| How did beavers pass down the ability to build dams? Posted: 04 Apr 2016 08:21 PM PDT |
| What is the difference between general and special relativity? Posted: 04 Apr 2016 05:14 PM PDT |
| Posted: 04 Apr 2016 03:43 PM PDT so I kind of understand that its Neutronium and basically matter made of only neutrons. but if I take the 100T teaspoon of the matter and lift it from the gravitational effects of the star would it just explode ? steal electrons/protons from anything around it or would it "decay" like a radioactive into other elements ? [link] [comments]  |
| What is the smallest possible Goldilocks zone for any star? Posted: 04 Apr 2016 10:27 PM PDT I just finished reading the second Ringworld book and it got me thinking about the smallest possible Ringworld that could be built and inhabited. Niven's Ringworld has a circumference just slightly larger than Earth's orbit (5.9x108 versus 5.84x108 miles). If it was as wide as the Earth is from pole to pole (it is actually much larger), the ring would still have 76 thousand times the surface area of Earth. (Using a series of rough math and quick googling.) [link] [comments]  |
| Which is more toxic Br or Cl gas and why? Posted: 05 Apr 2016 03:25 AM PDT I'm trying to understand in basic chemistry my understanding is that both of these gasses are found in molecular form so from what I understand molecular should be relatively stable with a full octet. however from what I understand they are highly toxic, why is that? [link] [comments]  |
| Why does the Milky Way make a U shape across the sky? Posted: 04 Apr 2016 04:23 PM PDT If we're on the outside of a flat disk looking toward the center, you would expect it to be straight across, but it takes up a U shape across the sky? [link] [comments]  |
| Posted: 04 Apr 2016 02:54 PM PDT Intuitively, it seems like they should be identical. [link] [comments]  |
| How to describe the interactions between two wave functions? Posted: 04 Apr 2016 03:19 PM PDT In all the examples I found, one derives only the wavefunction of one unknown particle. The probably most popular example is the electron in the potential of a hydrogen atom, where the potential is described by letting the proton is thought to be at rest. But that neglects the wave function of the proton, that of course also behaves according to quantum mechanics. This leads me to the conclusion that we got to have a way to describe the interaction of two (EDIT: multiple) particles, described with their wave function. [link] [comments]  |
| Is there a conflict between Klein's paradox and Black holes? Posted: 04 Apr 2016 02:09 PM PDT I've recently discovered Klein paradox . It appears to be in conflict with the idea of a black hole, or is this illusory only? (My hypothesis is there is no potential barrier in black holes at all, but I'm not sure) [link] [comments]  |
| what would happen if one stopped having social contacts? Posted: 04 Apr 2016 12:54 PM PDT Is social interaction a natural need like eating and drinking? [link] [comments]  |
| Posted: 04 Apr 2016 11:01 AM PDT |
| How does proton decay time work? Posted: 04 Apr 2016 10:27 AM PDT I understand the basics of particle decay, but I'm a little confused as to the extremely long decay time of the proton (longer than the age of the universe itself). What causes a particle to undergo an extremely long time for decay as compared to more instable particles, which decay in fractions of a second? And does it mean that matter will all sort of... eventually disappear? [link] [comments]  |
| Why is the sphere of influence of a planet like Neptune or Saturn larger than that of Jupiter? Posted: 04 Apr 2016 07:20 AM PDT Apologies if this ends up being a double post, I asked the question about 5 days prior, but it appears not to have been posted, and I was unable to find in while searching this sub-reddit. I'd like to start by prefacing that my knowledge of this topic is relatively limited, and entirely self-taught. In reading up on a whole bunch of different aspects of astrodynamics, I came across the concepts of sphere of influence, Lagrangian points, etc., and while I've come to understand most of what I am reading, I'm a bit unclear on why the sphere of influence of a large planet like Jupiter, would be smaller than that of a smaller planet like Saturn or Neptune (source is Wikipedia)). My theories are that is has to do with the density of the planet (?), or maybe it's proximity to the Sun (?), but alas, I am not actually sure. [link] [comments]  |
| Why does the Jacobian for polar coordinates looks similar to the rotation matrix around the z-axis? Posted: 04 Apr 2016 09:37 AM PDT |
| Are quarks and electrons really indivisible? Posted: 04 Apr 2016 01:11 PM PDT I read somewhere that quarks and electrons are indivisible. How can we know that? As far as I know, the term "atom" means indivisible in greek, which shows we once thought the atom was indivisible as well. It's hard for me to understand how something can exist without being made of anything else, it just exists. [link] [comments]  |
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