Based on ongoing experiments, how far away are we from nuclear fusion power? |
- Based on ongoing experiments, how far away are we from nuclear fusion power?
- Are protons in nuclei wiggled by electrons "flying" around them?
- Do the same species of animals from different parts of the world have different accents?
- Challenger Deep: How certain are we that it's the deepest spot in the ocean? How was this proven?
- Does increasing the pressure of smoke (in a container) make it deposit on the walls faster or slower?
- Would it be possible to kill a star with the technology we currently have?
- Does all antimatter come from nuclear fusion? If not, where can it be found in nature?
- Would a charged and/or rotating black hole lose charge and/or angular momentum along with mass-energy through Hawking radiation?
- [Mathematics] Why are we unable to express the antiderivatives of some functions e.g. (e^x)/x?
- If water was compressible what affect would it have on the oceans?
- Brown Dwarfs?
- How much battery power is needed to lift a small drone (~1.1 kg / 2.55 lb) above the Karman line or 100 km above mean sea level?
- Is it possible to trap static electricity in a mason jar?
- What causes neutron beta decay?
- Would you undergo time dilation in simulated gravity as you would in actual gravity? If so, why?
- How can relatively soft animals survive the crushing pressure of the Mariana Trench while still maintaining their shapes?
- Can we fold an A4 sheet of paper all the way to the moon?
- How does a quantum computer factor prime numbers to break encryption?
- [Biology] Do proteins made with the same amino acids but different codons act exactly the same?
- Would it be possible to live off of self-generated electricity?
- Does the weight of an object vary with the rotational speed of the planet?
| Based on ongoing experiments, how far away are we from nuclear fusion power? Posted: 07 Mar 2016 02:58 AM PST I know there's the ongoing joke of nuclear fusion being 50 years away every year, but based on current experiments, does that still hold true? [link] [comments]  |
| Are protons in nuclei wiggled by electrons "flying" around them? Posted: 06 Mar 2016 08:07 PM PST Protons and electrons attract each other. And I hear that an electron is like wave around the nucleus. Waves oscillate so they should shake the proton. [link] [comments]  |
| Do the same species of animals from different parts of the world have different accents? Posted: 06 Mar 2016 07:14 PM PST Humans speak different languages in different regions of the world. Do wolves from North America, for example, have the exact same calls as wolves from Russia? [link] [comments]  |
| Challenger Deep: How certain are we that it's the deepest spot in the ocean? How was this proven? Posted: 06 Mar 2016 08:34 PM PST How do we know for certain that there isn't a trench or a fissure somewhere in the ocean floor that is deeper than Challenger Deep? How do we know that it's the deepest spot? How was this first proven? At what point was it suspected that it was the deepest part of the ocean, and how was it investigated? [link] [comments]  |
| Posted: 06 Mar 2016 09:05 PM PST I'm curious about this because: 1) There's brownian motion where for particles small and light enough, they'd be moved by the internal movement of the gas molecules, which would be higher at higher pressure. 2) The particles in the smoke might clump together faster by collisions with each other, making it harder for them to be moved around by the gas molecules, making them settle faster. 3) The particles in the smoke which clump together, might get broken up again if there is an increase in pressure because of the more energetic gas molecules, thus remaining in air longer or may get abraded off the walls because of the more energetic gas molecules? So what direction would it go, faster or slower deposition of the solid particles? Does the method of increasing pressure matter? (say, increasing temperature, decreasing volume, or increasing the amount of smoke/aerosol through an inlet). How do the type of particles in the smoke/aerosol matter? [link] [comments]  |
| Would it be possible to kill a star with the technology we currently have? Posted: 06 Mar 2016 06:48 AM PST I saw a post in /r/all that got me thinking about this. Specifically, the Sun. Is it possilbe? [link] [comments]  |
| Does all antimatter come from nuclear fusion? If not, where can it be found in nature? Posted: 06 Mar 2016 06:23 PM PST If not, where does antimatter come from? I understand that nuclear fusion results in positrons. I also understand there could have been an equal amount of matter and antimatter after the big bang, but is it otherwise found in nature? Thanks, askreddit! [link] [comments]  |
| Posted: 06 Mar 2016 09:38 AM PST |
| [Mathematics] Why are we unable to express the antiderivatives of some functions e.g. (e^x)/x? Posted: 06 Mar 2016 02:01 PM PST I mean shouldn't we have developed some technique by now to express these functions since we can numerically solve them? [link] [comments]  |
| If water was compressible what affect would it have on the oceans? Posted: 06 Mar 2016 08:12 PM PST If water suddenly became compressible what affect would it have on the oceans? Would we see a huge decline in ocean level due to the water compressing at depth? Or would nothing happen? EDIT: To clarify I mean if ocean water is more compressible like Air. Thanks to /u/iorgfeflkd for pointing out my error. [link] [comments]  |
| Posted: 06 Mar 2016 06:49 PM PST When a nebular starts to come together, the core of it starts to heat up due to friction. But if it does not have the required temperature to begin nuclear fusion it becomes a brown dwarf. My question is do brown dwarfs glow or let out light energy, and if so where does this energy come from, and will it run out of energy from producing light? [link] [comments]  |
| Posted: 07 Mar 2016 02:42 AM PST I read today about a drone flying 11,000 feet by someone in the Netherlands. link!. What I understand from the site is that it has a 5200 mAH, 11.1 volt Lithium battery. How many of these would be needed to power a similar size drone (1160g) about 10 times the height achieved? [link] [comments]  |
| Is it possible to trap static electricity in a mason jar? Posted: 06 Mar 2016 08:36 AM PST Is it possible to trap static electricity in a mason jar? If so how long can it stay "trapped" in there? I am helping my daughter with a science experiment. [link] [comments]  |
| What causes neutron beta decay? Posted: 07 Mar 2016 05:19 AM PST Not a physics person by education, but I was watching this show about how the atomic bomb was created the other day and it got me thinking... If I understood correctly, atoms with atomic numbers greater than Uranium are unnatural. We created them in the lab by firing neutrons at a Uranium-238 particle and that neutron transmuted(?) into a proton, thus creating a new element. My question is as such; what would cause a neutron to 'want' to do this? I read on this website about the mechanics of how the beta decay happens, but don't understand why it happens. What am I missing here? Also, it is possible for a proton to decay into a neutron by the reverse process? [link] [comments]  |
| Would you undergo time dilation in simulated gravity as you would in actual gravity? If so, why? Posted: 06 Mar 2016 08:22 AM PST If I spin something really, really fast, like a circular space station, I undergo artificial gravity. But if I go super super fast (I know I'm using complex terms, just stay with me here), would I also be experiencing time dilation? If so, why? I was under the impression that time dilation is only a thing because gravity is a "dent" in spacetime. Does the rotation of the space station also create this "dent"? [link] [comments]  |
| Posted: 06 Mar 2016 09:17 AM PST |
| Can we fold an A4 sheet of paper all the way to the moon? Posted: 06 Mar 2016 01:14 PM PST I've heard that if you fold an A4 sheet of paper 42 times it would double it's thickness so many times it could reach to the moon. Of course, in the real world, we can't really fold one more than 7 times or so. But granted we could fold it as many times as we wanted, would it be possible to fold an A4 sheet of paper so it reached all the way to the moon? [link] [comments]  |
| How does a quantum computer factor prime numbers to break encryption? Posted: 06 Mar 2016 06:22 PM PST A lot of talk around quantum computers involves using them to break modern encryption which relies on large prime numbers and the difficult modern computers have in finding prime factors. I think I understand how qubits work - each holding the superposition of probabilities of values 0 and 1 instead of just a 0 or 1. How can this used to factor prime numbers? I know quantum computers have been in the lab as long as I can remember. Are we close to having a practical quantum computer? [link] [comments]  |
| [Biology] Do proteins made with the same amino acids but different codons act exactly the same? Posted: 06 Mar 2016 11:23 AM PST I'm taking an upper division genetics course and refreshing on basic stuff like wobble. If different codons can produce the same amino acid, and different organisms have different codon biases, then would a protein of the same sequence from two different biases behave exactly the same? [link] [comments]  |
| Would it be possible to live off of self-generated electricity? Posted: 06 Mar 2016 11:19 AM PST Say I have a bicycle or some other mechanical means of converting mechanical energy into electricity. How much would I be able to generate? How long might it last and what could I do with it? [link] [comments]  |
| Does the weight of an object vary with the rotational speed of the planet? Posted: 06 Mar 2016 11:41 AM PST I'm assuming the centripetal force would reduce the effect of gravity on the surface...... [link] [comments]  |
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