Keep hearing that we are running out of lithium, so how close are we to combining protons and electrons to form elements from the periodic table? |
- Keep hearing that we are running out of lithium, so how close are we to combining protons and electrons to form elements from the periodic table?
- If temperature is a metric for the average kinetic energy of particles, is there also a metric for the standard deviation of the kinetic energy of particles?
- Could Carbon-group elements like Silicon and Tin form complex chains just like Carbon? (i.e. Hydrocarbons)
- When examining one mole samples of different gases under conditions of constant pressure, volume and temperature, do the particles in denser gases tend to slow down in their movement?
- Why exactly do refracting lens magnify electromagnetic radiation?
- Does the drinking of acid fluids (such as coke) affect how much energy I can absorb from food?
- Why do we assume the core of a black hole has a singularity in it?
- Do extremely loud sounds (150 decibels) at frequencies beyond human hearing (21kHz or 10Hz) still cause hearing damage or loss?
- Is Voyager on an escape trajectory out of the Suns soi or is it just on an extremely elliptical orbit?
- Approximately how much power is lost when using a wireless charger compared to a normal wired one? And what factors contribute the most to this loss?
- What makes the silkie chicken black?
- What’s the difference between closing a program and “force quitting” a program?
- What stops insects like spiders, mosquitoes, and flies from completely dying out during the winter in the wild?
- Is Voyager travelling fast enough that we have to compensate for the Doppler effect when communicating?
- How do you measure air pollution?
- How do carbon dioxide and other greenhouse gases absorb radiation?
- How and why is DNA formed/made?
- How do spacecraft gain speed by flying past massive objects (like planets etc.)?
- How quickly is battery research progressing?
- Would it be possible to design a food that eliminated pooping?
- Why do some LEDs remain on for seconds after they've been switched off?
- Why would centrifugal force exist in a universe with nothing in it?
- In Stoke's Law (F = 6πηrv) where does the "6" come from? In simple terms.
| Posted: 03 Dec 2017 06:40 AM PST |
| Posted: 03 Dec 2017 07:02 AM PST |
| Posted: 03 Dec 2017 12:25 AM PST I know about how Carbon can form long chains with other Carbons and Hydrogen to form Hydrocarbons. [link] [comments]  |
| Posted: 03 Dec 2017 04:43 AM PST From Halliday & Resnick: "Amedeo Avogadro...suggested that all gases occupying the same volume under the same conditions of temperature and pressure contain the same number of atoms or molecules." So am I correct in thinking that, on average, the velocity of particles must drop as the mass increases in order to preserve constant kinetic energy (i.e temperature). And then the slower particles will tend to collide less frequently with the container, thus maintaining pressure? Will denser gases tend to have more internal collisions (that is, less particles will then make it through the mass to collide with the containter)? I'm trying to clarify my understanding of kinetic theory here in relation to the above statement and the ideal gas law. [link] [comments]  |
| Why exactly do refracting lens magnify electromagnetic radiation? Posted: 03 Dec 2017 07:00 AM PST |
| Does the drinking of acid fluids (such as coke) affect how much energy I can absorb from food? Posted: 03 Dec 2017 03:41 AM PST In other words, can acids break things into pieces that our body can't make use of anymore? For example, if I ate a burger while drinking coke, do I get less energy out of the burger compared to when I don't have a coke with it? [link] [comments]  |
| Why do we assume the core of a black hole has a singularity in it? Posted: 02 Dec 2017 11:55 PM PST Why do we assume the core of a black hole has a singularity in it? How does it make sense that something can be infinitely dense, i.e. have 0 volume? I could understand it if a black hole was an object of finite but extreme density—then its escape velocity would still be stronger than the speed of light, but the laws of physics would still make sense at the core because space would not have infinite curvature there. But why do people say black holes have INFINITE density? [link] [comments]  |
| Posted: 02 Dec 2017 12:25 PM PST |
| Posted: 02 Dec 2017 11:55 PM PST |
| Posted: 02 Dec 2017 09:35 AM PST |
| What makes the silkie chicken black? Posted: 03 Dec 2017 07:21 AM PST The chicken is black from the skin, to the meat, and even the bones. Only the fur-like feathers are white. Does anyone know what pigment it is? And what evolutionary advantage does it confer to the chicken? [link] [comments]  |
| What’s the difference between closing a program and “force quitting” a program? Posted: 03 Dec 2017 06:40 AM PST To expand, is there a major coding difference, or can all programs just "force quit" themselves? [link] [comments]  |
| Posted: 02 Dec 2017 01:36 PM PST When they are exposed to cold, snow and freezing temperatures over a long period of time, what allows them to come back in the spring? I assumed that if they left eggs behind, they would freeze and die/be unviable during the winter months. [link] [comments]  |
| Posted: 02 Dec 2017 05:18 PM PST How fast is Voyager travelling? Are we receiving at enough of a Doppler shift that we have to rebuild the communication systems? Since we can't do that on Voyager, are we having to transmit at a higher carrier frequency/higher bit rate such that when it reaches voyager, it is incoming at the frequency Voyager was built for? Or was this designed into the probe when it was built? Lots of questions, I know, but I feel like there are many more just with this topic. [link] [comments]  |
| How do you measure air pollution? Posted: 02 Dec 2017 02:21 PM PST |
| How do carbon dioxide and other greenhouse gases absorb radiation? Posted: 02 Dec 2017 06:12 PM PST I understand that the molecules begin to vibrate more after absorbing thermal radiation, but what process actually causes this vibration and how is it absorbed beyond just saying they absorb differing wavelengths? [link] [comments]  |
| How and why is DNA formed/made? Posted: 02 Dec 2017 08:20 PM PST |
| How do spacecraft gain speed by flying past massive objects (like planets etc.)? Posted: 03 Dec 2017 12:44 AM PST From what I understand, as you near a planet, your gravitational potential is converted into kinetic energy resulting in a speed boost but as you pass the planet that extra speed will be used to escape the planets gravity, converting that additional Ek back into Ep. Ive heard voyager 1&2 used planet flybys to speed up, I really have no idea how this works [link] [comments]  |
| How quickly is battery research progressing? Posted: 02 Dec 2017 09:18 PM PST Is there a graph like this one showing solar cell efficiency progress for batteries? I keep hearing about various new battery techniques, but it's hard to see the overall picture. How good are the different battery technologies, and how quickly is each type progressing? [link] [comments]  |
| Would it be possible to design a food that eliminated pooping? Posted: 02 Dec 2017 07:49 PM PST Question comes from my son. He learned at school this week that our poop is waste/undigested matter. So he wanted to know if it would be possible to design a nutrition source that, if fed to a person in measured amounts, would eliminate the need to poop. [link] [comments]  |
| Why do some LEDs remain on for seconds after they've been switched off? Posted: 02 Dec 2017 12:41 PM PST |
| Why would centrifugal force exist in a universe with nothing in it? Posted: 02 Dec 2017 11:36 PM PST For example we are in a universe that is nothing more than an empty vacuum. If we begin spinning and stretch out our arms, it seems logical that we would feel outward centrifugal force. However what is causing this centrifugal force? What is it with respect to? If there is nothing at all that exists besides us, why would we even experience it? Is there some sort of information exchange between our frame and the outside world that modulates whether centrifugal force exists or not? Also is it possible we could measure astronomically small centrifugal force to get information about whether our universe is rotating or where its center is, and other similar information? [link] [comments]  |
| In Stoke's Law (F = 6πηrv) where does the "6" come from? In simple terms. Posted: 02 Dec 2017 06:40 PM PST I understand the other terms are to do with viscosity and a sphere, but I can't find any explanation of where "6" comes from. Is it just because a sphere is used? Or is there some complex mathematics behind it? [link] [comments]  |
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