Why does sticking your fingers back your throat trigger your gag reflex, but swallowing food doesn't? |
- Why does sticking your fingers back your throat trigger your gag reflex, but swallowing food doesn't?
- I was reading about antimatter, and was wondering, how can you tell that gamma rays came from anti-matter and matter reacting, versus some other source (GRBs, etc.)?
- Why does lightning flash, but thunder rumble?
- Does letting a phone battery die completely before charging help improve battery life?
- Why can't you ever have truly monochromatic light?
- Why is there no more room for any other elements in the Periodic Table?
- If you sent a particle that doesn't interact gravitationally or electromagnetically through a black hole, would it come out the other side?
- How does the absorption spectrum of compounds and molecules differ from that of their constituent elements?
- How does a wireless signal get converted into binary?
- What makes Dinosauria a valid or useful clade? Are there features all dinosaurs (including birds) share?
- What determines the maximum achievable frequency of a processor on a microscopic level?
- How much does gravity affect result of chemical reactions? Was there ever a chemical experiment set in space that gave significantly different results than on Earth?
- Is it possible that we could have a semiconductor diode equivalent, but working on the basis of heat rather than electricity, and how would it work?
- How close are we to "solving" protein folding?
- If one isn't so interested in making fusion an "energy positive" reaction, could one potentially use a fusion reaction to store energy instead?
- Dangerous goods flashpoints. Should the lowest temperature be marked or the one closest to zero on the Celsius scale?
- If i take a paternity test with my fathers identical twin, what will the result be ?
- Why does food taste different when it's cold vs when it's hot?
- Why didn't bacterial antibiotic resistance occur in the wild before we started using antibiotics?
- The must a way to precipitate the salts out of sea water to make it drinkable . Is it possible?
- How does the Q value of a nuclear reaction determine how likely that reaction is?
- What is the coldest recorded or known spot in the universe?
| Posted: 02 Apr 2017 10:54 AM PDT |
| Posted: 02 Apr 2017 03:17 PM PDT |
| Why does lightning flash, but thunder rumble? Posted: 03 Apr 2017 04:48 AM PDT |
| Does letting a phone battery die completely before charging help improve battery life? Posted: 02 Apr 2017 06:40 PM PDT It seems occasionally my phone will start to get a terrible battery life, lasting less than 12 hours, but if I run the battery to zero and let it charge to 100%, the phone seems to last a whole day again. Is this a real effect? If it isn't, why would it seem like a real effect? [link] [comments]  |
| Why can't you ever have truly monochromatic light? Posted: 02 Apr 2017 07:52 PM PDT |
| Why is there no more room for any other elements in the Periodic Table? Posted: 02 Apr 2017 06:25 PM PDT Forgive me..I don't know how to link to a specific comment thread. In Neil Degrasse Tyson's AMA this evening, part of his answer to one of the top questions was... "Consider also that you reference and "unearthly" element. That is not likely at all because the periodic table of elements is full. There's no room for any other elements to be discovered in the natural universe." Why, is it impossible to think that there could be undiscovered elements in the universe? Or, no room for them as he put It? Thanks! [link] [comments]  |
| Posted: 02 Apr 2017 09:24 PM PDT If you had a particle that didn't have mass or interact electromagnetically, would this be able to 'escape' the grasp of a black hole? Would any other interactions be observable? Would time and space dilation be measurable and consistent with massive particles? Thank you! [link] [comments]  |
| Posted: 02 Apr 2017 02:00 PM PDT I know that there is a very specific absorption spectrum for for example Nitrogen and Oxygen, and that these allow us to estimate the atmospheres of other celestial bodies. Is there a sufficient difference in absorption spectra between these and NOX gases to determine weather another body had an atmosphere of one or the other? How does this difference exist (if indeed it does at all)? [link] [comments]  |
| How does a wireless signal get converted into binary? Posted: 03 Apr 2017 12:50 AM PDT When you send a wireless signal from, for instance, a remote control to a tv, how does the tv interpret these signals and convert them into binary? Does the remote control just turn off to represent a 0 and on to represent a 1 or is the process more complex? [link] [comments]  |
| Posted: 03 Apr 2017 12:37 AM PDT Wikipedia tells me—
But can't this be done for any two animals? You can find the most recent common ancestor of, say, humans and langurs and declare all descendants of that animal part of the clade Homoguria, a sub group of primates. But that really wouldn't be a useful classification, would it?
Again, why not separately study Ornithischians and Saurischians? Why combine these two orders into a clade called Dinosauria? As I understand, a clade refers to any phylogenetic grouping apart from the standard one like phylum, class, order, etc. So, when we have two proper orders like Ornithischia and Saurischia, why invent a "clade" that includes both of them? The only reason I can think of is that there were some very definite traits shared by all dinosaurs. If so, what are they? Thank you. [link] [comments]  |
| What determines the maximum achievable frequency of a processor on a microscopic level? Posted: 02 Apr 2017 02:43 PM PDT |
| Posted: 02 Apr 2017 10:40 AM PDT EDIT: not only result, but the whole process of reaction [link] [comments]  |
| Posted: 02 Apr 2017 08:13 PM PDT For example, in heating one end of the rod, the other end eventually heats up, but by heating it from the opposite end, no heat comes through and the other end remains cold, I can immediately think of 1000 uses for something like this, for example air conditioning, or refrigeration. [link] [comments]  |
| How close are we to "solving" protein folding? Posted: 02 Apr 2017 07:58 PM PDT Is it just a matter of having enough computational resources, or are there still major gaps in our knowledge of protein folding mechanisms? [link] [comments]  |
| Posted: 02 Apr 2017 10:50 AM PDT I know fusion reactions are pretty high energy things, and then whenever we try to contain one, the energy required makes it an energy negative reaction. However, if one forgoes an interest in making fusion energy positive, could one form an equilibrium with energy in/energy out to turn the fusion reaction into a battery? (A battery that leaks energy, but still "stores" it nonetheless) My thinking is that if you feed X amount of power into the system, it will produce (X - (w)x) power, where w is the fraction of power that is wasted per unit of input per unit of time, which can be fed back into the input with the option of drawing more power (thereby "shrinking" the reaction) to charge a network of batteries that function as an energy buffer of sorts, which us humans then draw from. Is there any sense in which fusion could work like this? Like, what can we do with fusion if we lose an interest in making it energy positive? [link] [comments]  |
| Posted: 03 Apr 2017 01:24 AM PDT I work at a shipping company, booking cargo on vessels. I was given a manual on hazardous cargo booking. It was stated that should the customer provide a range of degrees, I should input the lowest point for plus degrees and the highest point for minus degrees. When I challenged this to my superiors, I was told that this should be done so because as temperature decreases, the cargo would cool down from zero and thus reach the higher negative temperatures first. I argued that according to what I remember from chemistry, the higher the temperature, the more active every suvbstance gets. Thus, the lowest value from that range should be marked, since everything up from there would be increasingly dangerous anyway. The fire (and other) hazards don't just cease because the temperature is "too high" in the case of any substance, do they? For now, I'm following orders, however I would like to know who is right for the sake of the safety of those people that work with the cargo. Thanks! [link] [comments]  |
| If i take a paternity test with my fathers identical twin, what will the result be ? Posted: 02 Apr 2017 11:01 AM PDT |
| Why does food taste different when it's cold vs when it's hot? Posted: 02 Apr 2017 11:08 AM PDT |
| Why didn't bacterial antibiotic resistance occur in the wild before we started using antibiotics? Posted: 02 Apr 2017 11:31 PM PDT Penicillin was discovered in mushroom spores, but if penicillin occurred naturally in the world before us using it, why wasn't there already penicillin resistant bacteria? [link] [comments]  |
| The must a way to precipitate the salts out of sea water to make it drinkable . Is it possible? Posted: 03 Apr 2017 03:06 AM PDT |
| How does the Q value of a nuclear reaction determine how likely that reaction is? Posted: 02 Apr 2017 01:02 PM PDT Say there are two possible ways a nucleus can decay. Will the reaction with the larger Q value be more or less likely to occur? Why is this the case? Which process will require less energy? [link] [comments]  |
| What is the coldest recorded or known spot in the universe? Posted: 02 Apr 2017 10:52 AM PDT |
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