Why does color fade when left in sunlight for extended periods of time? |
- Why does color fade when left in sunlight for extended periods of time?
- Why is only 10% of the population left handed?
- How can phycists know the average lifetime of a proton?
- What evidence is there to support the theory that inside every black hole is another universe and our universe is inside of a black hole another universe?
- Why aren't all amino acids glucogenic?
- If all the cells and molecules in our skin change, then why do we keep bruises and marks from our childhood?
- In the Schrödinger equation solutions for a square well, why do we assume the electron is not travelling?
- I've often heard Jupiter referred to as a "failed star." Is this a fair representation? How close in terms of mass was it to actually becoming a star?
- Are there any studies that show other species to be capable of lying/dishonesty?
- Does eating chicken increase antibiotic resistance in humans?
- Why does a Neutron star gets smaller the more mass it gains ?
- If I am smelling a food, how do the particles that enter my nose leave the food in the first place?
- How does car wax work to protect the paint colour?
- Can a strong enough electric field penetrate Faraday cage?
- Is all body fat newly synthesized?
- If graphite can be turned into graphene, then can a similar thing be done with black phosphorus?
- Can bleach expire/'go bad'?
- Why is rocket staging more efficient?
- Can the gravitational pull between objects on earth be measured?
- Why does my radio get louder when I put my hand near it?
- Why time goes slower when you're near a massive object? (a black hole for example)
- What mathematical conjecture looked solid, only to fall apart when presented with larger numbers?
- Does traveling through warped spacetime affect the polarization of photons (or any other polarized particle, I suppose), or just the direction of travel?
| Why does color fade when left in sunlight for extended periods of time? Posted: 07 May 2016 06:51 AM PDT We have a rack of DVD cases next to the window, and recently I've noticed the covers have all faded in color. Strangely the red ones seem to have faded far more than any of the others. [link] [comments]  |
| Why is only 10% of the population left handed? Posted: 07 May 2016 04:14 PM PDT |
| How can phycists know the average lifetime of a proton? Posted: 08 May 2016 04:48 AM PDT In a physics book at school I read that the average lifetime of a proton is > 1,81037 seconds (5,71029 years). But how can we know this if the universe isn't even that old, not even remotely? [link] [comments]  |
| Posted: 07 May 2016 06:15 PM PDT |
| Why aren't all amino acids glucogenic? Posted: 08 May 2016 12:24 AM PDT As far as I'm aware leucine and lysine are ketogenic. But why is this? Why can't the body just rely on glucogenic amino acids? [link] [comments]  |
| Posted: 07 May 2016 03:58 PM PDT |
| Posted: 07 May 2016 10:55 PM PDT If you send a wave along a slinky, it can still have a 0 amplitude at the edges, yet the pulse itself travels back and forth between the source wall and the opposite wall. Why can't this occur for electrons in the square well? Why do we assume that the wave is a standing wave, instead of a travelling wave? [link] [comments]  |
| Posted: 07 May 2016 11:09 AM PDT |
| Are there any studies that show other species to be capable of lying/dishonesty? Posted: 07 May 2016 01:52 PM PDT |
| Does eating chicken increase antibiotic resistance in humans? Posted: 07 May 2016 03:31 PM PDT I've read here that there is a link between eating chicken and antibiotic resistance. The study doesn't seem very reliable to me, because it wasn't a controlled experiment. What is the current understanding of eating chicken with antibiotics? [link] [comments]  |
| Why does a Neutron star gets smaller the more mass it gains ? Posted: 07 May 2016 11:19 AM PDT |
| If I am smelling a food, how do the particles that enter my nose leave the food in the first place? Posted: 07 May 2016 02:57 PM PDT If I am smelling an apple, then it means tiny particles of apple have shuffled off the outer layer and are diffusing through the air and some of them enter my smell receptors and bingo! it smells like an apple. Right? But an apple is a solid, so why would it diffuse in the first place? Also, what is the rate of diffusion, or rather, what variables does it change with? [link] [comments]  |
| How does car wax work to protect the paint colour? Posted: 07 May 2016 05:44 PM PDT My car had a tough life for two years in the hands of the previous owner, than some parts that face upward are now less red than vertical parts (doors etc). I am told that waxing car would help fight the sun. How does it work, and how does waxing and wiping things off almost rightaway work? It doesn't seem like anything is sticking to the paint like clearcoat does. Also, i noticed when waxing it comes on in streaks. Wouldn't that protect just those streaks and not the lines in between? [link] [comments]  |
| Can a strong enough electric field penetrate Faraday cage? Posted: 07 May 2016 06:06 AM PDT |
| Is all body fat newly synthesized? Posted: 07 May 2016 07:43 AM PDT I think I understand what happens when I get fat by eating pasta. Some of the carbohydrate is oxidized to provide energy which is used to synthesize body fat, using the rest of the carbohydrate as a source of carbon atoms, hydrogen atoms, and more oxygen atoms than are needed. When I get fat by eating animal fat is it just the same deal: burn some to power synthesis using the rest as raw materials? Or is there a process for recognizing fat molecules and storing suitable ones? Are all the fat molecules in my body synthesized locally, or were some made months earlier, by a cow in a field eating grass? Wikipedia talks over my head about triglycerides, but I get enough out of it to wonder if the answer is: half and half. The fatty acid molecules are found in the diet, but must be assembled into threes, with glycerol, locally. [link] [comments]  |
| If graphite can be turned into graphene, then can a similar thing be done with black phosphorus? Posted: 07 May 2016 03:47 PM PDT I was just thinking, that since black phosphorus has a similar structure and similar properties to graphite, would it be possible to make a "phosphorus-ene" or something similar, with the same properties as graphene? And what about phosphorus buckyballs or phosphorus nanotubes? [link] [comments]  |
| Posted: 07 May 2016 05:43 PM PDT If bleach has an expiration date, what would happen to it if it went past the date? [link] [comments]  |
| Why is rocket staging more efficient? Posted: 07 May 2016 07:36 AM PDT For example, when you release a stage after using up all its fuel to lessen the empty mass. Why is this more efficient than say having one main fuel "compartment" and just burning it all out of what would be the first stage engines? [link] [comments]  |
| Can the gravitational pull between objects on earth be measured? Posted: 07 May 2016 11:08 AM PDT Say you have a massive object like a 747. And something small, like a post-it note. Can the 747's pull on the post-it note (and vice versa) be measured? [link] [comments]  |
| Why does my radio get louder when I put my hand near it? Posted: 07 May 2016 11:38 AM PDT |
| Why time goes slower when you're near a massive object? (a black hole for example) Posted: 07 May 2016 02:21 PM PDT I just don't understand why time goes slower. Is anyone able to explain me why? Is it because the light is bended somehow by the object and arrives at an external observer slower? Let's take 2 observers, both 20 years old. One decides to go near a black hole for some time and return to the second observer. When they meet again, will they be the same age? I just don't get how one would age slower/faster being somewhere else. [link] [comments]  |
| What mathematical conjecture looked solid, only to fall apart when presented with larger numbers? Posted: 07 May 2016 10:18 AM PDT I've been reading the Wikipedia page about Fermat's Last Theorem. It includes a passage:
What are some of these past conjectures? [link] [comments]  |
| Posted: 07 May 2016 11:06 AM PDT I guess I don't know for sure how special relativistic phenomena affect polarization either, although I have an intuition. If I am traveling near light speed along x, and intersect (unpolarized) photons traveling along y, it seems to be I would measure them as being linearly polarized along z (more completely so, the closer to c I was going). If the photons were linearly polarized along x, rather than unpolarized, then it seems that the photons would seem to disappear as I approached c. Are those intuitions completely off base? Are there any interesting general relativistic effects on polarization that can be intuitively understood? Thanks! [link] [comments]  |
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