How common is lightning on other planets? |
- How common is lightning on other planets?
- If we weren't counting, would there be a way to tell how old we were?
- How do lakes maintain any depth overtime?
- The closer you get to a massive body, the faster you need to go to orbit. For earth, air resistance limits closeness you can achieve orbit at, but is there a theoretical limit for how close your orbit can be, on bodies without an atmosphere?
- Do plants near highways or busy roads have different cell structure, due to emissions, compared to plants in a forest?
- Do adopted children take on personality traits in favour of their biological or adopted parents?
- What happens when a turtle ends up upside down in the wild? Does it just lay upside down till it dies?
- How are heat sink compounds both graded, and selected for use? Whose prime area of expertise is this?
- How do Lasers burn objects? Do the stream of photons actually impart energy in the form of heat upon absorption, or does the act of hitting a surface create some sort of friction-based heat?
- Are Astronauts on the ISS required to speak multiple languages?
- Do starchier plants deteriorate slower than plants with higher sugar content?
- Why does administering IV Dexamethasone too quickly cause a burning/itching sensation in the recipient's groin?
- What affect does pollution have on flight?
- The Large Hadron Collider is 27km long in order to stably accelerate particles, but is there any hope of miniaturization in the future?
- Can the mass of a particle change?
- Are there any "flighted" birds that opt not to fly?
- Does Halley's comet get smaller after each orbit?
- I have two pieces of wood. One is burnt by fire. The other is burnt by a lightning strike. Is there anyway to distinguish between the two?
- Will Earthquakes and Volcanos Eventually Stop? If so, when?
| How common is lightning on other planets? Posted: 14 Apr 2018 02:01 AM PDT How common is it to find lighting storms on other planets? And how are they different from the ones on Earth? [link] [comments]  |
| If we weren't counting, would there be a way to tell how old we were? Posted: 13 Apr 2018 05:16 PM PDT |
| How do lakes maintain any depth overtime? Posted: 13 Apr 2018 04:11 PM PDT It seems like the amount of organic matter being added to a lake would always outstrip its ability to shift sediment out through any draining creeks, even more so for those that don't have major out flows. [link] [comments]  |
| Posted: 13 Apr 2018 04:15 PM PDT For example, on the moon, could you orbit at 500 ft, if you were going fast enough? 50 ft? 5? [link] [comments]  |
| Posted: 13 Apr 2018 02:26 PM PDT |
| Do adopted children take on personality traits in favour of their biological or adopted parents? Posted: 13 Apr 2018 04:07 PM PDT |
| Posted: 13 Apr 2018 05:39 PM PDT |
| Posted: 13 Apr 2018 06:38 PM PDT On the whole, when an end user buys heat sink compound there's no great need for in-depth decisions. A 1.5g tube for $5-10 will probably be fine. But my Mac, I discovered, has at least two quite distinct grades of compound in use. There's a higher-performance paste between the GPU and its heat sink, and a much thicker paste plastered on to all the VRAM chips on the graphics card. It looks like tile grout, to be honest, and it has to be plastered on about 3mm deep in order to give thermal contact between the very low-profile VRAM chips and the graphics card heat sink they lie under. This got me wondering. How do engineers decide what grades of heat sink compound to use? How much does it matter? How many different grades are there in common use? Is selecting the right compound taught in Electrical Engineering these days, and if not, which discipline does consider it? My £5 tube specified its viscosity, thermal conductivity, operating temperature range and maybe 1-2 other things as well I don't remember. But I didn't understand the significance of any of those numbers, so all I could do was assume the numbers were reasonable for my use case and glop it on. If, as an engineer, you calculate that you do need some specialised compound, where can you obtain it from? What use cases require special formulas?? I did know heat sink selection could be a serious business, but I hadn't appreciated that choosing the right heat sink compound could be equally finicky. [link] [comments]  |
| Posted: 13 Apr 2018 04:21 PM PDT I'd imagine it's not friction-based or else glass would heat up as light passed through it, plus, someone once told me that light cannot generate friction because it lacks the mass, although I have no idea whether that's true or not. It doesn't sound right, but I'm far from being an expert. Also, I know that dark surfaces are meant to get hotter in the sun than lighter surfaces because they reflect less light and absorb more - I'm guessing this would be the same for a laser beam, the absorption of light generating the heat? [link] [comments]  |
| Are Astronauts on the ISS required to speak multiple languages? Posted: 13 Apr 2018 03:41 PM PDT For example, are the Cosmonauts required to speak English? And the Astronauts required to speak Russian? Edit: not really astronomy but I feel as though it's the most relevant flair [link] [comments]  |
| Do starchier plants deteriorate slower than plants with higher sugar content? Posted: 13 Apr 2018 04:25 PM PDT |
| Posted: 13 Apr 2018 09:14 PM PDT We call it "ants in the pants" or "ring of fire." Pushing the med slowly helps but some patients are ultra sensitive & some days unfortunately I can't spend that much time on it. This is a question that obviously comes up from patients on an almost daily basis. I'd be remiss not to attempt to find out why. [link] [comments]  |
| What affect does pollution have on flight? Posted: 13 Apr 2018 08:26 PM PDT Is there a difference between flying through clean air vs. flying through smog/pollution? [link] [comments]  |
| Posted: 13 Apr 2018 11:37 AM PDT |
| Can the mass of a particle change? Posted: 13 Apr 2018 09:20 AM PDT Since almost all of the mass of a particle is from the binding energy it holds, Is it possible to reduce the amount of binding energy there is in the particle by making it cooler or hotter or other weird scenarios which could effectively change the binding energy and hence the mass? [link] [comments]  |
| Are there any "flighted" birds that opt not to fly? Posted: 13 Apr 2018 12:58 PM PDT I guess my questions is that we all know there are bird species that cannot fly, my guess is because they were able to survive without flying. Are there any species of birds that are in that transitional phase of being able to fly but able to thrive without flying very much or not at all? [link] [comments]  |
| Does Halley's comet get smaller after each orbit? Posted: 13 Apr 2018 09:00 AM PDT If the tail of the comet is all the melting ice and dirt then should it be getting smaller. Or does it gain more ice and dirt as it flies back into deep space? Edit: I misspelled tail [link] [comments]  |
| Posted: 13 Apr 2018 05:14 PM PDT |
| Will Earthquakes and Volcanos Eventually Stop? If so, when? Posted: 13 Apr 2018 08:20 AM PDT As I understand it, Earth was once entirely molten, and then began cooling and the crust formed, and that's where we all live. We have earthquakes because forces under the crust push the pieces around, and we have volcanos because the crust isn't very thick in some places and/or that's where two crust pieces meet and the molten stuff underneath pushes out. If cooling is still going on, shouldn't the crust still be getting thicker, and at some point won't the crust be so thick these things stop happening? Right now, the crust isn't even 100km thick. If it was 150km, or 200km, or 500km thick, would that be enough to stop tectonic movement, and thus bring an end to earthquakes, and also be too thick for volcanos to push out? How thick would the crust have to be for earthquakes and volcanos to stop? How long will it take for the crust to get that thick? [link] [comments]  |
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