If elephants had gone extinct before humans came about, and we had never found mammoth remains with soft tissue intact, would we have known that they had trunks through their skeletons alone? |
- If elephants had gone extinct before humans came about, and we had never found mammoth remains with soft tissue intact, would we have known that they had trunks through their skeletons alone?
- If we could use the Large Hadron Collider as a cannon pointed towards space, would the particle make it into orbit?
- How can TSA/Airport security workers stand next to X and T ray machines all day everyday without any ill effects?
- Where does the energy in core-fusion come from?
- How long will Voyager I last in space?
- How do you measure the amount of molecules in a vacuum?
- How are Cosmologists Able to Estimate the Size of the Total Universe?
- If I stood on Saturn and looked up would I see the rings?
- Why is it that we see a lot of Resistor-Capacitor (RC) circuits in electronic designs but not a lot of Resistor-Inductor (RL) circuits?
- Why does polarization and electric field have conjugate complex exponentials?
- If you travel towards an object at very-close-to-c, will the object have aged once you arrive?
- If it is impossible to project a sphere onto a 2D plane without distortion, does that mean that every camera lens and telescope must have distortion because light is hitting it on different parts of a curved surface but we get a 2D image out of it?
- If a computer is mining Bitcoin in a room, is all of the power supplied to it eventually available as heat, or does some of the power go into the "information" the calculations produced?
- What causes a razor blade to lose its sharpness?
- What would happen if a neutrino interacted with one of the photoreceptor cells in someones eye? What would they see?
- How would an atmosphere twice as dense as that of Earth affect the transmission of sound? Would it be noisier? Quieter?
- If two bodies in space were orbiting each other at say 1 light minute apart and one disappeared would the remaining body be instantaneously affected or would it take one minute to react to the lack of gravity?
- If the Universe is an outdoor pool, is the CMB the pool walls or simply the edge of a sphere within the pool corresponding to our 13.8 bn years eye sight? Could there be many such spheres in the pool, none of them seeing the actual pool walls?
- If we stuck one end of a tube in the ocean and the other end in space, would the vacuum be strong enough to pull up the water column?
- Why doesn't gargling Listerine immediately end Strep throat?
- Is the mean free path affected by the speed of the particle?
- How is addiction measured?
- Do babies in utero recognize language differences in multi-lingual mothers?
- If astronauts had a gun fight in space, how far apart could they be while maintaining lethality?
| Posted: 15 Jan 2017 06:36 PM PST Is it possible that many of the extinct animals we know of only through fossils could have had bizarre appendages? [link] [comments]  |
| Posted: 15 Jan 2017 07:14 AM PST |
| Posted: 16 Jan 2017 07:08 AM PST I know the people walking through the machines have nothing to worry about, but are there any precautions in place to stop the workers absorbing these rays? Do the machines focus the radiation into one area? Thanks in advance. [link] [comments]  |
| Where does the energy in core-fusion come from? Posted: 16 Jan 2017 04:39 AM PST So the process in the sun is the following (as far as i know): a deterium- and a tritium-atom fuse into a helium-atom and one neutron. So where does this huge amount of energy come from? We have the same mass as before and there are no other energy-sources, as far as i can tell. Can someone please explain? [link] [comments]  |
| How long will Voyager I last in space? Posted: 15 Jan 2017 10:54 AM PST I understand that Voyager is about to run out of power. My question is asking how long (in terms of millions or billions of years) will Voyager last? I heard that all elements radioactively decay so will the metal on voyager eventually decay? [link] [comments]  |
| How do you measure the amount of molecules in a vacuum? Posted: 16 Jan 2017 12:28 AM PST |
| How are Cosmologists Able to Estimate the Size of the Total Universe? Posted: 16 Jan 2017 02:33 AM PST Note the language in the title is 'the total universe,' so not just the observable universe. From this article at Livescience
How did this cosmologist, and apparently others, come to that conclusion? In other words, what clues are available about that which lies beyond the bounds of what can be observed by laws of nature? [link] [comments]  |
| If I stood on Saturn and looked up would I see the rings? Posted: 15 Jan 2017 12:50 PM PST |
| Posted: 15 Jan 2017 05:11 PM PST I am reviewing RC and RL circuits and in my textbook they state that you rarely will see RL circuits used because of the inductor's inability to have a precise value as opposed to the capacitor. If this actually true, why is it so? Is it because the inductor is comprised of a magnetic field whereas the capacitor is comprised of an electric field? Is working with a B field more difficult to have precise and expected values as opposed to working with an E field? [link] [comments]  |
| Why does polarization and electric field have conjugate complex exponentials? Posted: 15 Jan 2017 09:36 PM PST I was going through a paper where the electric field and polarization have a particular shown here. It appears fairly familiar but one thing I don't quite understand is: why are the complex exponentials of E and P the conjugate of one another? As far as I'm aware, this is not necessary for Maxwell's equations. Is it simply specific to the authors' model? [link] [comments]  |
| If you travel towards an object at very-close-to-c, will the object have aged once you arrive? Posted: 16 Jan 2017 03:15 AM PST If the answer is yes -- why? I thought time dilation was symmetric -- on board this spaceship moving at close-to-c it would seem as though the object is moving towards you and barely aging, and that the distance between you and the object would appear minimal so you'd arrive nearly instantly. If the answer is no -- this seems impossible. You could start at A, go to B, pick up a package, return to A, and see neither A nor B have aged at all. From the perspective of someone on A, you'd have made a roundtrip in hardly any time and gone FTL. (edit: ok, this part is the twin paradox. Nevermind the round trip. If the answer is "no" please just explain why not. I thought that traveling towards something at close-to-c would make it appear as though that object's "clock" runs slower) So, what am I missing? [link] [comments]  |
| Posted: 15 Jan 2017 06:26 PM PST |
| Posted: 15 Jan 2017 06:44 PM PST This occurred to me a while ago: heat generation is done, essentially, by using what for every other application is considered waste. So would it be possible to get the waste heat from computer calculations to function as a space heater, while getting a useful result out of the process beyond just the heat? [link] [comments]  |
| What causes a razor blade to lose its sharpness? Posted: 15 Jan 2017 02:28 PM PST |
| Posted: 15 Jan 2017 06:11 PM PST What are the odds of this happening to anyone? Are there any documented cases of this happening? [link] [comments]  |
| Posted: 15 Jan 2017 12:09 PM PST |
| Posted: 15 Jan 2017 03:01 PM PST |
| Posted: 15 Jan 2017 01:54 PM PST The heart of my question is the cosmic microwave background (CMB). I know what it is (thank you Internet), but what does it represent? Is it the end of what we see, or an actual border (but then: a border of what?). If it's just the end of lightspeed vision, could there be a number of universes happily dangling around in a greater area (the "pool")? Then comes the (I think) unanswered question: what is all this composed of? The Universe sphere we know well. What about the space between the spheres? What about the pool walls?Beyond the pool walls? I apologize for the semantics, these are hard concepts for me to grasp. Thank you! [link] [comments]  |
| Posted: 15 Jan 2017 09:42 AM PST I assume the answer to this depends on the diameter of the tube, so alternatively, what size tube would be needed to get the vacuum of space to draw the water up? [link] [comments]  |
| Why doesn't gargling Listerine immediately end Strep throat? Posted: 15 Jan 2017 04:52 PM PST |
| Is the mean free path affected by the speed of the particle? Posted: 15 Jan 2017 08:12 PM PST To be clear, i'm asking if a slow moving particle and a fast moving particle will have a different mean free path(through the atmosphere)? Assuming that everything else is kept the same. [link] [comments]  |
| Posted: 15 Jan 2017 03:59 PM PST |
| Do babies in utero recognize language differences in multi-lingual mothers? Posted: 15 Jan 2017 09:32 AM PST In addition, does in vitro exposure to multiple languages have long term cognitive benefits in the same way post-birth exposure does? Does it matter whether the mother is a native speaker of the spoken languages? Thank you. [link] [comments]  |
| If astronauts had a gun fight in space, how far apart could they be while maintaining lethality? Posted: 15 Jan 2017 02:24 PM PST |
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