How would a bee (or any flying insect) behave in the microgravity of the ISS? |
- How would a bee (or any flying insect) behave in the microgravity of the ISS?
- If it only takes the Earth 23 hours and 56 minutes to rotate on its axis, why doesn't the sun eventually set "in the middle of the day"?
- Would it be possible to jump off of Ganymede?
- If the Chicxulub impact caused a mass extinction event why do the Vredefort and Sudbury impacts not line up with other mass extinction events?
- Since Pluto's eccentric orbit crosses that of Neptune's, will there be a point where both collide?
- Most models of Dark Matter presuppose that it interacts with both gravity and the weak force. Why do Physicists believe that Dark Matter interacts with the weak force at all, why couldn't Dark Matter feel gravity alone?
- Why is there more focus on Mars exploration over Venus?
- Is it a coincidence that the formula for Kinetic Energy is the integral of momentum with respect to velocity?
- Is it possible for a moon to also have its own moon?
- What would happen to a paperplane in space that has the same orbit as the ISS?
- Could we send a rover to Venus and have it roam and do sciencey stuff ala Curiosity on Mars?
- How are drainage basins and continental divides even determined?
- How can you determine the interference path of sound?
- What is the de Broglie wavelength of a stationary macroscopic object?
- Double slit - why are there so few images of the non destructive pattern formed by observation/detection at the slits?
- Can two objects ever be in the exact same rest frame?
- Wouldn't plants be more efficient at gathering light if their leaves were black?
- Why do electric engines don't have gear box?
- Can some information move faster than light speed?
- Are planets perfectly spherical - and why don't we see planets in others shapes?
- Could there be anything more fundamental than quarks, bosons and leptons?
- Can retrovirus infections be passed down through genes?
- Regarding the expansion of the universe, is the "edge" of the universe moving away from the absolute center (like a soap bubble) or is all of space uniformly expanding (like how a rubber band stretches)?
| How would a bee (or any flying insect) behave in the microgravity of the ISS? Posted: 18 Jan 2016 05:17 AM PST |
| Posted: 17 Jan 2016 08:19 AM PST |
| Would it be possible to jump off of Ganymede? Posted: 17 Jan 2016 08:12 PM PST Friends were playing the CCG "Wars" and debating whether the dinosaur creatures could simply leap off of Ganymede rather than needing a spaceship. I am not smart enough to answer this query I hope that reddit can help. [link] [22 comments]  |
| Posted: 18 Jan 2016 05:06 AM PST I'm having a hard time believing this hasn't been asked before but I've spent about an hour searching the web and Reddit and found nothing really addressing my question. If you know of existing sources feel free to link me to them. Thanks! [link] [2 comments]  |
| Since Pluto's eccentric orbit crosses that of Neptune's, will there be a point where both collide? Posted: 17 Jan 2016 05:48 PM PST Reading Neil Degrasse Tyson's 'Death By Black Hole' where he mentions Pluto has an orbit much like an asteroid with an eccentric orbit, to the point that it crosses the orbit of Neptune. Is it possible that Neptune and Pluto could collide in the future? [link] [43 comments]  |
| Posted: 18 Jan 2016 05:15 AM PST |
| Why is there more focus on Mars exploration over Venus? Posted: 17 Jan 2016 06:01 PM PST I read it takes less energy to reach Venus. Other than the presence of water, what makes Mars a more focused target for exploration? [link] [46 comments]  |
| Posted: 17 Jan 2016 12:00 PM PST |
| Is it possible for a moon to also have its own moon? Posted: 18 Jan 2016 04:10 AM PST |
| What would happen to a paperplane in space that has the same orbit as the ISS? Posted: 17 Jan 2016 07:42 AM PST Especially short term, like heat affecting the structure etc. And just for fun, would a paperplane thrown from the ISS be able to reach escape velocity under any circumstances? [link] [146 comments]  |
| Could we send a rover to Venus and have it roam and do sciencey stuff ala Curiosity on Mars? Posted: 17 Jan 2016 08:09 AM PST |
| How are drainage basins and continental divides even determined? Posted: 18 Jan 2016 04:58 AM PST I was reading this wikipedia article and I was baffled that 17th century explorers managed to claim an entire drainage basin. It was then that it dawned on me that I have no idea how we would even know the continental divides to do this day. How are these discovered? Without going too far into /r/AskHistorians territory, was there even a process for this in the 17th century? [link] [3 comments]  |
| How can you determine the interference path of sound? Posted: 18 Jan 2016 04:17 AM PST I already know how interference works and worked with light wave interference. When working with light waves you could determine the 'path' the destructive and constructive interference takes/ where you will see light on a wall and where not. I've come as far as sketching the interference pattern for a set frequency and wavelength of two speakers and going from there but I'd like to find out how to do it mathematically. I'm sorry if this doesn't belong here but I'd be glad if someone could help me! [link] [5 comments]  |
| What is the de Broglie wavelength of a stationary macroscopic object? Posted: 18 Jan 2016 06:58 AM PST I feel this was kind of glossed over in undergrad - the examples we were given usually included some macroscopic velocity too (e.g. m=1 kg, v=1 m/s, wavelength = 7x10-34 m). However, I suspect this was a bit of a "simplification for undergrads", and that the more accurate answer might be more subtle and complex. Otherwise, you might come to weird conclusions, like the idea that the wavelength of an object shoots up to infinity when you overtake its velocity. [link] [3 comments]  |
| Posted: 17 Jan 2016 12:08 PM PST Every video I see about the double slit experiment shows the interference pattern formed when going from one slit to two slits. Then, at some point, it is mentioned that if a detector is placed at the slits, then the interference pattern disappears and then forms two bands. The problem is, I've been looking around for the past few hours and cannot find any images, videos, or askreddit posts which show this. It would be ideal to have a video showing a single slit pattern, then the double slit interference pattern, then turning on the detector, resulting in the interference pattern turning into the two bands pattern. CGI animations nearly always show it, but where can I see an actual result of it? I get it that wave function collapse occurs and all that, but I have yet to come across an image or video showing how to force either the interference pattern or double band to occur based off of a detector or observer interacting with the experiment... [link] [20 comments]  |
| Can two objects ever be in the exact same rest frame? Posted: 17 Jan 2016 11:04 AM PST I'm by no means an expert in Relativity, but two objects can be in the same relativistic rest frame relative to one another. However, looking at the quantum end of things, Heisenberg's Uncertainty principle seems to say that two particles can't ever really be in the exact same rest frame to arbitrary precision. How do we reconcile these two things? What am i missing here? [link] [9 comments]  |
| Wouldn't plants be more efficient at gathering light if their leaves were black? Posted: 17 Jan 2016 09:21 AM PST From what I understand the colours we see are the non-absorbed wavelengths of visible light, meaning the green we see is light energy the chloroplasts are not utilising. If plants leaves were black wouldn't they gaining more usable energy? [link] [13 comments]  |
| Why do electric engines don't have gear box? Posted: 18 Jan 2016 04:13 AM PST So to give a little bit of context, the other day i was browsing the tesla car web and i found out that the cars didn't have clutch pedal. I thought that would be because they had an automatic gear box but the thing is they just have one gear. I was trying to look for an answer and i found that they don't need gears because electric engines always have the best torque posible. So here is my question: what is different from explosion engines to electric engines that make the last always work at the best torque possible. P.S. Sorry for my english level and thank you. [link] [5 comments]  |
| Can some information move faster than light speed? Posted: 17 Jan 2016 08:45 AM PST If the gravity around a black hole is so great that, within the event horizon, nothing including light can escape, then how does the information about the mass of the black hole escape outside the event horizon to tell objects how to move according to the laws of gravitation? The Earth "knows" the mass of the sun to follow an orbit around the sun to complete a revolution in one year. If the sun were replaced by a black hole of the same mass (I know the sun would have to have much bigger mass to eventually become a black hole, but this is just a hypothetical question), the Earth's orbit should remain unchanged. I suppose the answer probably involves the black hole's warping of space-time, but isn't there a group of physicists that believe there are graviton particles that convey gravitational force like electrons do for electomagnetism? How would they explain gravitons exiting from the event horizon to interact with other particles? Thanks! [link] [13 comments]  |
| Are planets perfectly spherical - and why don't we see planets in others shapes? Posted: 18 Jan 2016 02:50 AM PST |
| Could there be anything more fundamental than quarks, bosons and leptons? Posted: 17 Jan 2016 08:37 AM PST If we zoomed in on matter even further than the three categories of subatomic particle discovered so far, is it possible that we could see something more fundamental, perhaps something that is a constituent of all three types? Or have these particles been proven to be the most fundamental? [link] [13 comments]  |
| Can retrovirus infections be passed down through genes? Posted: 18 Jan 2016 02:14 AM PST I know that retroviruses infect cells/replicate by transforming their RNA into DNA through reverse-transcriptase and incorporate it into the host cell genome. Different factors can then make the host cell transcripe and express these viral genes, which leads to viral replication. [link] [comment]  |
| Posted: 17 Jan 2016 09:03 PM PST |
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