Do mirrors reflect only visible-spectrum EM waves or those of other wavelengths? |
- Do mirrors reflect only visible-spectrum EM waves or those of other wavelengths?
- How are clothes washed aboard the ISS?
- Why did physicians historically administer vaccines into patients buttocks as opposed to the Arms/thighs?
- Why aren't all batteries rechargeable?
- Which species first evolved eyebrows?
- What gives hydrofoils roll stability?
- Are rainstorms, or storms in general, at all influenced by the sunlight? In other words, do storms behave differently at night vs during the day?
- Is the Milky Way generally rotationally aligned the same way our solar system is?
- If I drink beer all night, is my piss alcoholic or do I digest all the alcohol?
- Can Bessel Functions describe Cylindrical Harmonics in more than 3 dimensions?
- During Nuclear fusion experiments, how is the power produced dissipated safely?
- Why can electrical wiring not be used to repair nerve damage, especially in the spinal cord?
- Why aren't viruses considered alive?
- How are heat (phonons) and sound different?
- Is Internal Deformation in glaciers fastest at the surface or at the base?
- Why do bladeless wind turbines have to be spaced out?
- What happens underground as more and more oil is extracted?
- Stuff like the asian economic crisis 1997, how does one problem spread throughout the whole Continent?
- Is there any evidence that melatonin supplementation leads to decreased production of it in humans?
- How does blood flow round your body in space?
| Do mirrors reflect only visible-spectrum EM waves or those of other wavelengths? Posted: 28 May 2019 02:53 AM PDT I recall the story in which people who were present shortly after the chernobyl disaster were able to view extremely irradiated areas (see: elephants foot) through mirrors and cameras. Do the mirrors reflect any/some of the ionizing radiation? On the other end, do mirrors have any effect on infrared light or radio waves? [link] [comments]  |
| How are clothes washed aboard the ISS? Posted: 27 May 2019 07:36 AM PDT |
| Posted: 28 May 2019 03:04 AM PDT |
| Why aren't all batteries rechargeable? Posted: 28 May 2019 03:36 AM PDT Im talking about the AAA batteries you buy in stores: 1. How come you can charge some batteries and can't charge others 2. If chargeable batteries can be made then why make and sell unchargable ones [link] [comments]  |
| Which species first evolved eyebrows? Posted: 28 May 2019 12:01 AM PDT |
| What gives hydrofoils roll stability? Posted: 27 May 2019 05:35 PM PDT What gives hydrofoil water craft roll stability? I know that roll stability in airplanes comes from dihedral, but that also requires side slip to take effect. Is it the same effect with hydrofoils or is there a different phenomenon that keeps them from rolling over? [link] [comments]  |
| Posted: 27 May 2019 07:13 AM PDT |
| Is the Milky Way generally rotationally aligned the same way our solar system is? Posted: 27 May 2019 09:56 AM PDT The sun and planets are generally revolving around the same plane spinning in the same direction due to conserving angular momentum when the bodies were being formed. Does the Milky Way have the same tendency where the stars and solar systems are all rotating the same direction? [link] [comments]  |
| If I drink beer all night, is my piss alcoholic or do I digest all the alcohol? Posted: 27 May 2019 03:02 PM PDT |
| Can Bessel Functions describe Cylindrical Harmonics in more than 3 dimensions? Posted: 27 May 2019 09:22 PM PDT 3D Cylindrical coordinates have length, radius, and angle. If you add a fourth dimension, is it another angle? Radius? Or length? Why? I am specifically thinking of TE and TM modes in a cylindrical waveguide. I was talking to my friend's dad, who worked at Lockheed. His specialty was optics. He worked on the space shuttle back in the day. He designed an instrument which was used to align the heat shield tiles with high precision. I asked him about Bessel Functions. He said, "Oh yeah. If you have vibrations on a sphere, that's Spherical Harmonics. If it's vibrations in a cylinder, that's Bessel Functions. And vibrations on a flat rectangle, that's Hermite Polynomials". Is this true? I'm trying to model what it would look like if you have TE or TM modes in a cylindrical waveguide, but the waveguide (and waves) exists in 4 dimensions of space. I want to make an animation in Processing 3. [link] [comments]  |
| During Nuclear fusion experiments, how is the power produced dissipated safely? Posted: 27 May 2019 08:14 AM PDT I've seen smaller scale tests using heater bars to dissipate energy as heat, but how is this translated to such a high energy level? [link] [comments]  |
| Why can electrical wiring not be used to repair nerve damage, especially in the spinal cord? Posted: 27 May 2019 02:10 PM PDT Say, for instance, someone is shot through their spine, destroying the spinal nerves in a specific location. Is it not possible to implant a conducting material like copper in that region, to at least try and reestablish a connection, creating the possibility of relearning through physical therapy? [link] [comments]  |
| Why aren't viruses considered alive? Posted: 27 May 2019 07:25 AM PDT I get that we have a list of criteria for something being alive (i.e. it has to grow, reproduce, evolve, respond to stimuli, etc.) and that viruses fail several of these criteria. Here is my issue though, isn't this list arbitrary? Like, why draw the line at a place that excludes viruses. They sure seem alive by many standards. They even have genetic material, reproduce, and evolve. It has been proposed before that our definitions of life could exclude life on other planets that evolved differently from Earth. Doesn't that mean we are just arbitrarily choosing to exclude some from Earth itself too? Is there a reason or a benefit to exclude viruses from the tree of life? [link] [comments]  |
| How are heat (phonons) and sound different? Posted: 27 May 2019 10:46 AM PDT I know that heat is made up of phonons, or lattice vibrations, and sound is vibrations through a medium (on a much larger scale than phonons). What distinguishes them? If a sound existed that was so small/quiet-so as to be on the same energetic scale as a phonon-how would it be different from a phonon? [link] [comments]  |
| Is Internal Deformation in glaciers fastest at the surface or at the base? Posted: 27 May 2019 07:57 AM PDT Through some skimming google searches, I find directly contradictory statements that either say "friction from the ground causes slower internal deformation at the base," or "higher pressures drive faster internal deformation at the base". I'm inclined to agree with the latter statement, since internal deformation is reliant on pressure, but the logic of the former makes sense, as glaciers flow faster in the center than the edges because of friction with the valley walls. [link] [comments]  |
| Why do bladeless wind turbines have to be spaced out? Posted: 27 May 2019 04:12 AM PDT I saw this video about new wind turbines that dont have blades. https://i.imgur.com/HkPc4IF.jpg I'm just wondering why they are as far apart as they are? Is that the minimum distance to ensure effectiveness? Why is that the case? And why not just put them as close together as possible? [link] [comments]  |
| What happens underground as more and more oil is extracted? Posted: 27 May 2019 06:02 AM PDT My understanding is that to extract oil from normal underground oil fields, explorers need to pump water instead, to replace it. What happens down there as we extract all those millions of barrels of oil around the world? Will the underground earth strata not get destabilized somehow? [link] [comments]  |
| Posted: 27 May 2019 06:34 AM PDT I was recently search for The economic crisis of Thailand 1997, with little knowledge of economic, how does one problem in Thailand cause a mass destruction of inflation in other ASEAN country like Indonesia, Singapore, Malaysia, Hong Kong, etc? [link] [comments]  |
| Is there any evidence that melatonin supplementation leads to decreased production of it in humans? Posted: 27 May 2019 03:53 AM PDT As an example, those men who supplement testosterone are often advised that endogenous production of testosterone may decrease and lifelong supplementation may be necessary. Since the body also makes melatonin, does artificial supplementation of it lead to decreased endogenous production in the short or long term? (Not asking for specific medical advice, just curious.) [link] [comments]  |
| How does blood flow round your body in space? Posted: 27 May 2019 08:59 AM PDT |
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