Why can you rename, or change the path of, an open file in OS X but not Windows? |
- Why can you rename, or change the path of, an open file in OS X but not Windows?
- What would happen if you took a chunk of bismuth into a room with an active MRI machine? Would it fly out of your hand and be shoved against the wall?
- Why do Newton's corrections to critical pressure and temperature exist for hydrogen and helium?
- What are the factors that affext the fundamental frequency of a wine glass?
- My muscles will sometimes twitch at a regular frequency, often when held in a strange position. What determines the frequency?
- Can gravitational waves escape black holes?
- [Biology] Is the inside of a resting neuron negative, or just MORE negative (a.k.a. less positive, but still positive) than the extracellular fluid surrounding it?
- If cell membranes are made of lipids, and detergent dissolves lipids, why doesn't soap dissolve our skin?
- How and when do trees decide where they will start "branching" off?
- Why is my sense of touch regarding moisture wonky when it is cold/chilly?
- Is a configuration possible where an antiproton replaces the electron in a hydrogen atom?
- Are there any shapes that can't be split into n shapes of equal size using a compass and straightedge?
- How do astronomers know how far a star or galaxy is from us?
- Why is hydrogen so prevalent all over the world in oceans and other bodies of water, yet almost completely nonexistent in our atmosphere?
- If someone inside a box were to tell you that the cat is for certain either alive or dead and no longer in the superposition, is that enough information for the wave function to collapse for you?
- What can happen with black dwarfs?
- Why are relatively light nuclei(graphite) used to thermalise neutrons in nuclear reactions rather than heavier nuclei(metals)?
- What part of a human's brain takes part in informing you that you are thirsty? Can't find the answer anywhere.
- What did people do about hemroides before medicine?
| Why can you rename, or change the path of, an open file in OS X but not Windows? Posted: 02 Apr 2016 08:23 AM PDT |
| Posted: 02 Apr 2016 05:10 PM PDT |
| Why do Newton's corrections to critical pressure and temperature exist for hydrogen and helium? Posted: 02 Apr 2016 07:49 AM PDT In my chemical engineering book, we are told to adjust the critical pressure and temperature of hydrogen and helium by 8K and 8 atm when calculating reduced pressure and temperature. Why? Why are the actual values 8K and 8 atm lower? why not just define them as the corrected value? [link] [comments]  |
| What are the factors that affext the fundamental frequency of a wine glass? Posted: 03 Apr 2016 07:12 AM PDT In a wine glass, how would the length of the water in the glass (height) affect the fundamental frequency. Also would the thickness on the glass rim affect the fundamental frequency also. [link] [comments]  |
| Posted: 02 Apr 2016 11:21 AM PDT An example I could easily replicate is the twitching that affects my foot when I rest its arch against a narrow bar or beam (running perpendicular to the direction my foot is pointing). This twitching, also experienced occasionally in my fingers when holding my hand in a weird position, is always set to a constant frequency. [link] [comments]  |
| Can gravitational waves escape black holes? Posted: 03 Apr 2016 12:12 AM PDT |
| Posted: 02 Apr 2016 04:41 PM PDT I've been looking at YT videos and various websites for a while now and they seem to use vague language in describing this [link] [comments]  |
| Posted: 02 Apr 2016 02:56 PM PDT |
| How and when do trees decide where they will start "branching" off? Posted: 02 Apr 2016 09:39 AM PDT |
| Why is my sense of touch regarding moisture wonky when it is cold/chilly? Posted: 02 Apr 2016 03:42 PM PDT For my family, I am the laundry engineer and have issues sometimes telling when items are "really" dry out of the dryer or off the clothing line. I have THE WORST time telling if textiles are still damp when they are slightly cold. Why is this? It seems like cold/chilly temps are cryptonite for my sense of touch regarding moisture. [link] [comments]  |
| Is a configuration possible where an antiproton replaces the electron in a hydrogen atom? Posted: 02 Apr 2016 03:06 PM PDT I know that electrons don't orbit nuclei in the same way planets orbit the sun, but I understand that in some sense the electron stays where it is because of a balance between electrostatic attraction pulling it in, and (some kind of quantum-y) centrifugal force pulling it outwards. If you replaced the electron with an antiproton, the electrostatic attraction would be equal at the same distance, but the antiproton's higher mass would mean it wouldn't need to move as fast. Would it be possible to get the proton and antiproton to 'orbit' each other in this way without annihilating? Could you even have, say, a neon nucleus with 10 antiprotons whizzing around it? Might this be possible only at extremely low temperatures, or only for minute periods of time, or under some other weird conditions? [link] [comments]  |
| Posted: 02 Apr 2016 12:16 PM PDT I was thinking about squaring the circle and how it is impossible, and I was wondering about other things that would be impossible to do with a compass and straightedge. I then got to thinking about splitting a circle into sections of equal area, and could think easily about how to split it in half, but not sure about how it could be split into thirds or fifths. Then I started thinking about other shapes that couldn't be split in half, or at least I couldn't split in half. One shape I thought of was the section bounded by a vertical parabola and a non horizontal or vertical line. I wasn't sure of how to split it in half, and I'm not even sure if it is possible. [link] [comments]  |
| How do astronomers know how far a star or galaxy is from us? Posted: 02 Apr 2016 09:30 PM PDT |
| Posted: 02 Apr 2016 08:52 AM PDT Our atmosphere is almost completely composed of nitrogen, oxygen, and argon. Why not hydrogen? [link] [comments]  |
| Posted: 02 Apr 2016 12:21 PM PDT I'm pretty sure that wave functions being collapsed or not is related to where information of it is available. For instance, a person inside a box with the cat would collapse the wave function for it, and would be either alive or dead. But a person outside the box would still experience the cat being in the super position because the cat being alive or dead is dependent on the atom decaying, which is interpreted as being in a super position. The fact that a person is in the box observing the cat does not change this for the people outside the box, and we would perceive the person as thinking the cat is alive, and thinking the cat is dead, in super position. This only happens because they are linked to the decaying atom, if instead we told a person to go into a box, and flip a coin, and shoot the cat if it is heads, we would know that the cat is either alive or dead but not both because a coin flip is not in superposition at any point since it is not related to quantum mechanics. Is my above interpretation correct? And if so, would someone passing a note that said the cat is for certain alive or dead constitute the required information leaking out for the wave function to collapse for the outside world? Meaning the way the outside world would need to see the box is more similar to the coin flip, meaning they don't know the answer, but they know there is a certain answer? [link] [comments]  |
| What can happen with black dwarfs? Posted: 02 Apr 2016 09:26 PM PDT I don't have very much knowledge about astronomy, so if I made any mistakes or false conclusions, please correct me. When our sun dies, it'll turn into a white dwarf. The white dwarf would be pretty hot and slowly cool down over time. After "a while", it'd turn into a black dwarf. According to Wikipedia, most white dwarfs have a mass of roughly half the sun and the size of the earth, so I'll take this as my/our example. Would that white dwarf, when it's cooled down and turned into a black dwarf (temperature of 5K), be the same mass and volume? Could that black dwarf be captured in a different solar system and behave like a planet? If the black dwarf would be captured in the habitable zone of a solar system and we'd add water and everything that's important for life, to it, would it be able to "create" life there or would it start being a "proper" star again? [link] [comments]  |
| Posted: 02 Apr 2016 08:57 PM PDT is it the smaller distances between them in the lattice? [link] [comments]  |
| Posted: 02 Apr 2016 10:53 AM PDT |
| What did people do about hemroides before medicine? Posted: 02 Apr 2016 07:41 PM PDT Did they have a berries and herb cure or did the live out the rest of there days with an itchy bumhole? [link] [comments]  |
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