Since radio waves and light are both forms of electromagnetic radiation, is it possible to detect visible light with an antenna? |
- Since radio waves and light are both forms of electromagnetic radiation, is it possible to detect visible light with an antenna?
- Does a stronger immune system lead to stronger allergic reactions?
- Can you integrate cos(t)-sqrt(cos^2(t)+24) dt?
- Why do I get freckles and does my hair go blonder when I get a lot of sun?
- How far apart are raindrops vertically?
- Why brakes lose their braking power once they get hot?
- Why don't hummingbirds stay in flocks like other birds?
- CRT displays show weird colors in presence of a magnet due to deflection of electrons. Why does the effect last even when the external magnet is removed?
- How does potassium get from food to a cell?
- Why does buoyancy equal the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g and not the density of the object submerged?
- Why does ionic propulsion in spacecraft use noble gases as propellent?
- How do honey bees establish a new hive?
- What would a spontaneous phase change in the quantum vacuum be like?
- Are electric cars more dangerous to pedestrians and cyclists than other cars due to their overall lower noise levels?
- What's the science behind creativity and imagination?
- How do we accurately measure the speed of light?
- What is the physics behind the interaction of an x-ray with an atom in xrays diffraction?
- If gravity is mediated by gravitons, how would gravitons be able to escape a black hole?
- Were D&C procedures part of the tubal ligation procedure in the early or mid 1980's?
- What would happen if you gave an electron the exact energy of its work function?
- What is the effect on the microstructure of alloying aluminium?
| Posted: 08 May 2016 05:18 AM PDT |
| Does a stronger immune system lead to stronger allergic reactions? Posted: 08 May 2016 06:14 AM PDT Allergies is the immune system mistakenly beliving a substance is harmful and therefor attacks it. Does this mean a stronger immune system leads to a stronger allergic reaction? Also. Do people with AIDS no longer experience allergies? [link] [comments]  |
| Can you integrate cos(t)-sqrt(cos^2(t)+24) dt? Posted: 08 May 2016 06:20 PM PDT I'm trying to find the area in terms of theta of the polar graph r = cos(t)-sqrt(cos2 (t)+24). To do this I want to integrate r dt (t being theta) from 0 to some angle. I can't figure out how to do the integration. Wolfram won't give me an answer. Is the integral possible? Am I approaching this wrong? EDIT: fixing notation [link] [comments]  |
| Why do I get freckles and does my hair go blonder when I get a lot of sun? Posted: 08 May 2016 06:06 AM PDT |
| How far apart are raindrops vertically? Posted: 08 May 2016 03:18 PM PDT On average, how long before 2 raindrops hit roughly the same spot one after another? I guess what I'm asking is, what is the average rate at which raindrops fall? If I place a raindrop sized object under a raincloud, how many raindrops will land on that object in 1 second? [link] [comments]  |
| Why brakes lose their braking power once they get hot? Posted: 08 May 2016 08:52 AM PDT |
| Why don't hummingbirds stay in flocks like other birds? Posted: 08 May 2016 05:11 AM PDT |
| Posted: 08 May 2016 10:17 AM PDT |
| How does potassium get from food to a cell? Posted: 08 May 2016 03:37 PM PDT What happens once food enters the intestines, what process recognizes potassium? How does the potassium move from the intestines to a cell in your finger that needs it? [link] [comments]  |
| Posted: 08 May 2016 10:22 AM PDT When we talk about the Arquimedes principle and buoyancy, why does buoyancy have to do with the weight of displaced fluid rather than the weight of the object submerged? I ask this since the sum of the vertical forces that are applied in an object, in equilibrium, by the fluid in which he's submerged equals the weight of that object which,on another hand, also gives buoyancy... Sorry, my mother tongue is not english and it makes it rather difficult to explain my doubt, even more since it's about physics. [link] [comments]  |
| Why does ionic propulsion in spacecraft use noble gases as propellent? Posted: 08 May 2016 10:25 PM PDT Wouldn't it be more efficient to use something that forms ions more readily, i.e. flourine? [link] [comments]  |
| How do honey bees establish a new hive? Posted: 08 May 2016 06:20 AM PDT Does a hive send some kind of "expedition" to a suitable location? How do they choose where to settle? [link] [comments]  |
| What would a spontaneous phase change in the quantum vacuum be like? Posted: 08 May 2016 02:26 PM PDT I've read that it's possible that the "false vacuum" can spontaneously decay to a lower energy value. What would that look like from our perspective? What form would the liberated energy take? Would the laws of physics be the same inside the expanding volume of lower vacuum energy, or different? Could life, or even matter exist in the new vacuum state? [link] [comments]  |
| Posted: 08 May 2016 06:03 AM PDT |
| What's the science behind creativity and imagination? Posted: 08 May 2016 04:29 AM PDT I'm a game designer going through art school, and after taking it for granted for a while, I started wondering what exactly creativity is and how it works. I'm trying to find out things like when it first arose in humans, if it's present in any other animals (that we know of), etc. I'd imagine it has survival value, but I'm still curious. [link] [comments]  |
| How do we accurately measure the speed of light? Posted: 08 May 2016 11:12 AM PDT How do we accurately measure the speed of light? How do we accurately measure how far light travels in one year? I'm sure it takes some very precise calculations and instruments to measure this. [link] [comments]  |
| What is the physics behind the interaction of an x-ray with an atom in xrays diffraction? Posted: 08 May 2016 11:17 AM PDT |
| If gravity is mediated by gravitons, how would gravitons be able to escape a black hole? Posted: 08 May 2016 03:07 AM PDT As I understand, gravitons would be massless particles travelling no faster than C, just like photons. Photons cannot escape, but it seems gravitons would need to in order for the gravitation of a black hole to affect anything beyond its event horizon. [link] [comments]  |
| Were D&C procedures part of the tubal ligation procedure in the early or mid 1980's? Posted: 08 May 2016 05:06 AM PDT So today is Mother's Day and a few years ago my mother confided in me a guilt she has carried for a long time. Several months after the birth of my youngest sibling, she had her tubes tied. Apparently the doctor performed a D&C as part of the procedure. She was never told that she was pregnant but later felt that this would be the only reason for that being included in the procedure. So in addition to giving up her own fertility, she has a guilt that she has carried related to a potential loss of a child she never bore. Can someone give me some background on the nature of this procedure as it was performed around 1984, if her worries are based on fact or fiction? Also, make sure to wish you mom a happy mother's day. [link] [comments]  |
| What would happen if you gave an electron the exact energy of its work function? Posted: 08 May 2016 07:06 AM PDT I know that when you give an electron energy it can only be liberated if that energy is greater than the work function of the metal it is a part of. And that the kinetic energy of the liberated electron is equal to the energy of the photon - the work function. From Ek= Hf - work function So what would happen if the photons energy was exactly the same as the work function. To my understanding nothing can have 0 kinetic energy. [link] [comments]  |
| What is the effect on the microstructure of alloying aluminium? Posted: 08 May 2016 04:56 AM PDT |
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