Are there gemstones on the moon? |
- Are there gemstones on the moon?
- How much did fishes adapt to fishing?
- If something bleaches, where does the colour go?
- What mediates a salmon's ability to return to it's home river?
- How does the doppler effect not violate conservation of momentum? Is this a dark energy, negative vacuum pressure thing?
- Could there be new Covid-19 symptoms that haven’t surfaced yet?
- can space really be called a vacuume?
- Questions on Newton's 3rd law: when I push on a wall, how does it push back on me? I just don't understand what is happening at the particle level when push a wall thar causes it to push back on me. Same goes with an object on a table, how does the table actually push back on the object?
- When does a human become capable of recognizing their own reflection?
- Does the engine placement on a plane affect how steep the plane can take off?
- Since heat transfer is caused by random collision of particles, is it mathematically possible that your hand could touch a hot pan and you actually heat up the pan with your hand?
- What kingdom or domain of life are viruses in, and what differentiates them specifically from other single-cell organisms like bacteria?
- How fast could you go if you built a railgun straight through the Moon?
- If gravity propagates non-instantly, does that mean planets are being pulled to where the sun *was* a small time ago?
- Does docking with the international space station affect its orbit?
- How did covid-19 enter the first person to infect them?
- Are there any "living clades" (2 or more species whose last common ancestor is not extinct)?
- Plasmonic virus sensing: Seriously, why isn’t this more common?
- Why is it easier to hold your balance on a bicycle going fast than a bicycle going slowly?
- Why do people vomit from drinking banana and sprite?
- Why are Irradiated Objects Radioactive for so Long??
| Are there gemstones on the moon? Posted: 19 Jun 2020 05:54 AM PDT From my understanding, gemstones on Earth form from high pressure/temperature interactions of a variety of minerals, and in many cases water. I know the Moon used to be volcanic, and most theories describe it breaking off of Earth after a collision with a Mars-sized object, so I reckon it's made of more or less the same stuff as Earth. Could there be lunar Kimberlite pipes full of diamonds, or seams of metamorphic Tanzanite buried in the Maria? u/Elonmusk, if you're bored and looking for something to do in the next ten years or so... [link] [comments]  |
| How much did fishes adapt to fishing? Posted: 19 Jun 2020 03:23 AM PDT We as humans practice fishing for a very long time, and very intensively recently, so I wonder how can fishes still got tricked by the hooks and baits (even though most of fishing today is not with that method) So, are there fish species that significantly changed their behavior in response to fishing? And which one? [link] [comments]  |
| If something bleaches, where does the colour go? Posted: 19 Jun 2020 07:52 AM PDT When something gets bleached, where does the colour go? For example plastic toys or printed posters that lose their colour when exposed to the sun, as well as chemical bleached things such as hair or fabrics. [link] [comments]  |
| What mediates a salmon's ability to return to it's home river? Posted: 18 Jun 2020 08:46 PM PDT Is the instinct to return to their home river encoded in their DNA, or in their early memories? For example, if I took salmon eggs laid in river A and transplanted them in river B, which river would they return to? [link] [comments]  |
| Posted: 19 Jun 2020 08:12 AM PDT Not a physics major. Just watch a lot of Matt O'Dowd(đ). Photon momentum is a function of frequency. If a photon's frequency is different between two observers in receding galaxies, where did that momentum energy go? Does it bleed into some fundamental field? Does dark energy's stretching of spacetime warp the waveform? Does it mean there really is a prime reference frame and photon energies are only observed to be different because of relativistic Doppler effects? [link] [comments]  |
| Could there be new Covid-19 symptoms that haven’t surfaced yet? Posted: 19 Jun 2020 07:27 AM PDT For example, could we be in a "stage 1" of this virus? Is it possible that as of right now, the coronavirus is entering "stage 2" and surprising our immune systems, or some other symptom that just hasn't surfaced yet? What are the chances of new symptoms arising that we haven't seen yet? [link] [comments]  |
| can space really be called a vacuume? Posted: 19 Jun 2020 02:53 AM PDT If i'm understanding solar wind correctly space shouldn't be considered a true vacuum right? what am i missing here? [link] [comments]  |
| Posted: 18 Jun 2020 04:20 PM PDT |
| When does a human become capable of recognizing their own reflection? Posted: 18 Jun 2020 08:39 AM PDT As the question suggests, I'm just curious on how and when a person starts to recognize themselves in a mirror, and how does it compare to animals, for example? [link] [comments]  |
| Does the engine placement on a plane affect how steep the plane can take off? Posted: 18 Jun 2020 07:58 PM PDT I know there are a lot of factors involved in this such as the wind, weight of the plane, and the design of the plane itself but imagine two planes, one with engines on the tail (MD-80 series) vs. one with engines on the wings (737s or A320s), taking off at an identical takeoff situation. Which plane might be able to take off at a steeper angle? [link] [comments]  |
| Posted: 18 Jun 2020 11:47 AM PDT I know the probability of this would be inconceivably small so it would never actually happen, but is it mathematically possible that: because heat transfer is based on random collisions of particles, all the hot particles just so happen to bounce from your hand to a hot so that the net heat transfer is positive? This would mean that instead of the pan heating up your hand, your hand transfers even more heat to the pan. Sorry if I'm misunderstanding physics, just a fun question I thought of. [link] [comments]  |
| Posted: 18 Jun 2020 10:58 AM PDT I was doing some reading for fun on this and I can't find them anywhere in the Taxonomy wikipedia(https://en.wikipedia.org/wiki/Taxonomy_(biology) page [link] [comments]  |
| How fast could you go if you built a railgun straight through the Moon? Posted: 19 Jun 2020 12:10 AM PDT If the Moon is 3500Km's across and assuming that you had 200Gw available (1Gw nuclear plant every 100Kms with efficiency losses) and 1 ton of mass? How does this change at a limited acceleration of 10g? I think that you would get to a decent percentage of c but I don't know what this would be. [link] [comments]  |
| Posted: 18 Jun 2020 07:34 AM PDT If so, since the sun is moving extremely quickly through the galaxy, why doesn't it eventually lose its planets as they're in a sense being attracted to a point pretty far "behind" where it currently is? [link] [comments]  |
| Does docking with the international space station affect its orbit? Posted: 18 Jun 2020 12:36 PM PDT I would imagine it would have to - what I'm really curious about is whether or not it is enough of an impact that an adjustment has to be made after docking in order to keep the ISS in a stable orbit [link] [comments]  |
| How did covid-19 enter the first person to infect them? Posted: 18 Jun 2020 09:15 PM PDT From what's all understanding I have, it would be unlikely that the first case was from someone eating a bat. Is it that maybe it comes from something else they had eaten that was infected? [link] [comments]  |
| Are there any "living clades" (2 or more species whose last common ancestor is not extinct)? Posted: 18 Jun 2020 04:55 AM PDT I can't think of any... it could happen, right? Oh and "living clade" is apparently a meaninglyes term that I've just made up, which is probably why I can't google it! And maybe I'm using it wrong anyway, unless I'm also going to insist that ALL the descendents of the last common ancestor are still with us. I would settle for any pair of distinct species who share a common ancestor that is not extinct. [link] [comments]  |
| Plasmonic virus sensing: Seriously, why isn’t this more common? Posted: 18 Jun 2020 04:02 PM PDT This technique has been around since about 2010 (source) and has seen publications in ACS as recently as April (source). As someone who has colleagues working on similar techniques, why haven't I seen anything about this being applied in practice? [link] [comments]  |
| Why is it easier to hold your balance on a bicycle going fast than a bicycle going slowly? Posted: 18 Jun 2020 08:22 AM PDT When you are going a down a hill - you gain a lot of momentum, why is it that when in a state of higher momentum the chances of you falling off are considerably less because it's much easier to hold your balance than it is going at a slower pace: why is this? [link] [comments]  |
| Why do people vomit from drinking banana and sprite? Posted: 18 Jun 2020 12:44 PM PDT |
| Why are Irradiated Objects Radioactive for so Long?? Posted: 18 Jun 2020 06:19 AM PDT I'm watching the Chernobyl docuseries for the first time and am not fully grasping the concept of radiation exposure. It seems that a lot of the land around Chernobyl has seen reduced radiation over time to where tourists can come and visit the area (for limited periods of time). But the Pripyat Hospital basement is still incredibly dangerous from the piles of engineer and fireman clothes who were working that night some 30+ years ago. There are even videos on YouTube - https://youtu.be/pzjtJNu-jYM - of people touring the basement with Geiger counters, showing the radiation being emitted from those items. Please explain to me like I'm a 6 year old:
Thank you. [link] [comments]  |
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