Has anti-hydrogen formed bonds to form anti H2? If not what circumstances would you need? |
- Has anti-hydrogen formed bonds to form anti H2? If not what circumstances would you need?
- Why do most objects in the night sky (stars and planets) look to be the same size relative to our naked eyes?
- In general, by how much percent can solar and wind take over an energy grid, before we need batteries or alternatives that can respond to time-varying energy demands?
- In a documentary about the Manhattan Project I recently viewed (I don't recall the name of it, I apologize), some of the scientists expressed their concern about the "atmosphere exploding" and destroying the Earth during the Trinity test. What scientific basis did they have for this speculation?
- Do electric cars use electrical energy from the battery more efficiently than gasoline/diesel cars use heat energy from their fuel?
- How long could a snorkel be (or how deep into the ocean could it go) before you could no longer suck air into it from the bottom?
- How is a large body of mass trapped inside of another's gravity well as a moon? Doesn't it need to slow down in order to circularise its orbit?
- Is there a maximum amount of light that a black surface can absorb?
- How much of a barrier is the atmosphere for a spacecraft launched at orbital speeds?
- Would the viscosity of a liquid affect how far it shoots out of a squirt gun?
- What technological limitations are keeping us humans to desalinate seawater and provide every human clean water?
- How could I calculate the maximum size of a water balloon before it bursts?
- Why does plasma smell the way it does?
- It's possible to supercool or superheat a liquid so that it instantly boils or freezes when disturbed. Is it possible to do something similar with other phase transitions, such as producing a block of ice that will instantly melt?
- Do you get drunk easier in higher altitudes?
- What direction will a photon travel in?
- Is it possible for a planet to have multiple rings of asteroids (like Saturn's one ring) at different angles from each other?
- Can we generate and use magnetic fields to protect astronauts from radiation or channel radiation in specific directions?
- People hate to hear about nuclear waste, so why haven't we built integral fast or SCFRs to use up the uranium-238 and plutonium-239 that we do have?
- Is there a limit to how big speakers can be made today?
- Does gut bacteria affect our taste?
- If Quantum Field Theory most accurately describes phenomena at very small scales, why are "particles" still defined and used at those scales?
- Questions regarding the particle and wave duality of light?
| Has anti-hydrogen formed bonds to form anti H2? If not what circumstances would you need? Posted: 13 Jun 2017 02:24 PM PDT I am assuming that a bunch of trapped anti-hydrogen atoms will like to form bonds with each-other as regular hydrogen does (you don't really have a way to have atomic hydrogen in the gas phase) [link] [comments]  |
| Posted: 14 Jun 2017 06:19 AM PDT |
| Posted: 13 Jun 2017 05:21 PM PDT My understanding is that, because our energy demands are not constant, a 100% solar and wind energy grid would be impossible or impractical without advanced storage technologies that are currently not economically viable. But where is the "cross-over" point; when does it become impractical to continue to rely on these instead of scalable resources like nuclear, hydro, natural gas, and coal? Or is my understanding not entirely correct? [link] [comments]  |
| Posted: 13 Jun 2017 10:06 AM PDT |
| Posted: 13 Jun 2017 11:22 AM PDT Simple question: In terms of total Joules of energy transmitted to the crankshaft (...or whatever electric cars connect to the drivetrain), which is the most efficient, strictly speaking? [link] [comments]  |
| Posted: 13 Jun 2017 07:11 PM PDT Imagine you had an X foot long snorkel, and you tried to breathe from it from X - 0.5 feet underwater. How deep could it go before your lungs couldn't pull adequate air in? [link] [comments]  |
| Posted: 13 Jun 2017 12:37 PM PDT Forgive my crude understanding of orbital mechanics but it was my understanding that if an object is caught in a gravity well with no means to slow down then it will either impact or be flung off in another direction. A recent article about Jupiter having two new moons caught my attention and that they were captured. Is it not that the object caught up to the planet but that the planet caught up to the object and thus it never had escape velocity to begin with? [link] [comments]  |
| Is there a maximum amount of light that a black surface can absorb? Posted: 13 Jun 2017 11:50 PM PDT Can there be enough incident photons that saturate the surface? If so, what happens to the extra photons? What would we see? Would the black object get damaged? [link] [comments]  |
| How much of a barrier is the atmosphere for a spacecraft launched at orbital speeds? Posted: 14 Jun 2017 02:24 AM PDT I'm often fascinated by alternatives to rocket launches, and how viable they would be - space elevator, launch loop, etc. However, for some of these ideas, a big obstacle is the earth atmosphere - for example, using a Linear induction motor in a vacuum tube to accelerate up to orbital speed would leave you with a rocket at low altitude, which then still has to punch through the atmosphere before arriving in space. Now when a spacecraft re-enters the atmosphere, it uses the atmosphere as a breaking mechanism strong enough to land safely on earth, and it already uses the upper part of the atmosphere for much of the speed reduction. This would suggest bad thingsTM would happen to a spacecraft going orbital speeds at sea level. However, spacecraft are usually aerodynamically designed specifically to use the atmosphere for breaking, rather than trying to minimize drag and punch through the atmosphere. So thats my question - Would a spacecraft launched with orbital speeds(in the range of 6-10 km/s) designed with minimizing aerodynamic drag be capable of escaping the atmosphere intact? Would it still have a reasonable amount of speed left?(as in, would it leave the atmosphere with 90% of its original speed, or 10% of its original speed?) And would the answer to this question change meaningfully if the spacecraft was launched from a height of 10 kilometers, to avoid the most dense atmosphere? [link] [comments]  |
| Would the viscosity of a liquid affect how far it shoots out of a squirt gun? Posted: 13 Jun 2017 02:18 PM PDT If you have a squirt gun that shoots the same every time and you shoot it at the same angle, would it go farther if it was more viscous liquid or a less viscous liquid [link] [comments]  |
| Posted: 13 Jun 2017 07:08 PM PDT |
| How could I calculate the maximum size of a water balloon before it bursts? Posted: 14 Jun 2017 04:23 AM PDT I've got a BSc in Physics and I'm wondering what the maximum size of a water balloon or any other liquid filled spherical object would be before it breaks under it's own weight, depending on the strength of the shell material. How do I calculate the pressure on the shell and relate it to it's mass and volume? [link] [comments]  |
| Why does plasma smell the way it does? Posted: 13 Jun 2017 05:04 PM PDT I bought a little plasma lighter like this and I noticed it gives off a very refreshing clean smell. The best way I can explain it is that it smells like extremely fresh air. Is there any reason for this? It is quite a characteristic smell that I have never smelled before. [link] [comments]  |
| Posted: 13 Jun 2017 09:51 AM PDT |
| Do you get drunk easier in higher altitudes? Posted: 13 Jun 2017 06:01 PM PDT |
| What direction will a photon travel in? Posted: 13 Jun 2017 10:31 PM PDT Massless particles in a vacuum must travel, C, the speed of causality (and light). Ok. However, what gets me is the direction the photon is traveling in. In order to travel at C it must have to choose a direction. We typically think of photons and light having momentum in a certain direction (for example the sun's photons coming towards earth). However, imagine a newly created photon with no momentum (in terms of direction). What direction will it decide to travel. Let's assume an idealistic case where only the photon exists in a vacuum without small influences from external forces. Surely, if there's no momentum and the particle just exists, that seems to violate the idea that all massless particles in a vacuum travel at C. My intuition tells me that a photon will always have a preferential direction due to external influences and the initial conditions from where it was created. However, most laws hold up in idealistic cases and external influences we just count as residual errors in experiments. It seems as though the reverse is true in this case. Maybe another case is to think about a photon with momentum X and an external influence causing an equal and opposite momentum contribution to the exact decimal value causing the photon to stay in one place. What will happen? [link] [comments]  |
| Posted: 13 Jun 2017 02:49 PM PDT |
| Posted: 13 Jun 2017 09:24 PM PDT The earth generates a magnetic field which protects us from most solar radiation, can the same effect be used to protect astronauts or to channel radiation into a safe direction? [link] [comments]  |
| Posted: 13 Jun 2017 02:19 PM PDT Seems it would make sense. Say you can solve the nuclear "waste" crisis with technology proven to work in the past and people generally throw money at you. [link] [comments]  |
| Is there a limit to how big speakers can be made today? Posted: 13 Jun 2017 05:47 PM PDT A while back there was an episode of Rick and Morty where they perform to some giant alien heads using a 'top secret' US gov't amphitheater (?) with humongous speakers. Is it possible for humans to build speakers like this today? Or would impedance limit the amount of electrical current in the coils, such that they would only be able to play up to a certain frequency of sound? The speakers I'm referring to can be seen in the following music video (at the 5s mark, as in the link): https://youtu.be/n4Xp6g-_UUw?t=5s [link] [comments]  |
| Does gut bacteria affect our taste? Posted: 13 Jun 2017 04:05 PM PDT If we lack a certain type of bacteria in our gut does that in turn make it taste worse so we avoid ingesting it? Anecdotally, I'm allergic to peanuts and find they taste horrible...could that be because I lack the bacteria needed to consume peanuts? [link] [comments]  |
| Posted: 13 Jun 2017 05:00 PM PDT I understand that in QFT, very small particles are excitations in fields (e.g. Higgs boson in the Higgs field), but why are particles defined at all, at those scales? For example, isn't the LHC actually accelerating and colliding field excitations (protons), which results in more field excitations (Higgs boson)? Or are partilces and fields just two different ways of describing the same phenomena by different theoretical frameworks, particle physics theory and QFT? I think this the correct answer, but then I'm wondering why "particles" are used in QFT. Are they shorthand for a quantization of its field's excitation? [link] [comments]  |
| Questions regarding the particle and wave duality of light? Posted: 13 Jun 2017 10:03 PM PDT I only understood light with the wave model in mind but want to expand my knowledge to encompass the entirety of the particle/wave duality. I did research and I came up with a few questions.
I apologize if any of these questions are amateur. I merely want to understand. Any response is appreciated. [link] [comments]  |
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