Why does string theory require eleven dimensions? |
- Why does string theory require eleven dimensions?
- In 3-phase AC, what is the actual motion of electrons?
- Why do arctic climates often have days where night is warmer than day?
- How does regenerative braking recharge the battery in an electric car or motorcycle?
- Why does dispersion need to be accounted for even in single mode fiber?
- What leads to transformer explosions emitting the colors they do? (i.e. green or blue vs red)
- Which is the furthest star we can see with our naked eye? How does that compare with the size of the milky way?
- Do asteroids that are rich in ferromagnetic materials change trajectory significantly because of the earth's magnetic field?
- Why does lightning occur when a volcano erupts?
- Does blood clot when you die?
- How can we tell that we are moving in space?
- How does that brain physically recall memories?
- Is it possible to simulate simplest, smallest life form on a molecular level?
- Is the plane of the Suns orbit around the galactic center the same as the plane of the planets orbit around the Sun ? If so when in the cycle of the earths orbit are we in the front of the Sun's path.
- Is there a Relationship between LDL Cholesterol and risk of CVD/atherosclerosis?
- What is the space between the tectonic plates like? Is it hot? Cold? Flooded with water? How big are the divides at their widest points?
- Is there evidence that other planets undergo plate tectonics similar to earth?
- Why does ice stick to a metal spoon?
- What's the difference between glass and crystal?
- How was the first nucleic acid formed?
- How does acid rain causes marble monuments to undergo discoloration?
| Why does string theory require eleven dimensions? Posted: 27 Dec 2018 04:25 PM PST |
| In 3-phase AC, what is the actual motion of electrons? Posted: 28 Dec 2018 02:33 AM PST I understand that AC is electrons "wiggling" rather than flowing. But what about multiple phases of AC? Does it simply mean they wiggle faster in the same space of time, or each wiggle is stronger or farther, or are they performing some more complex motion, or is something else happening? [link] [comments]  |
| Why do arctic climates often have days where night is warmer than day? Posted: 27 Dec 2018 11:34 PM PST I just looked at the weather for McMurdo Station in Antarctica and Longyearbyen in Svalbard, and this upcoming week has many consecutive days where it is 3C warmer at night. How is this possible? My guess is that the sun loses much of its influence on the daily weather cycles, and that wind and sea currents become more influential. [link] [comments]  |
| How does regenerative braking recharge the battery in an electric car or motorcycle? Posted: 27 Dec 2018 07:26 PM PST |
| Why does dispersion need to be accounted for even in single mode fiber? Posted: 28 Dec 2018 03:38 AM PST Light of different wavelengths travel at different speeds through glass, like a glass fiber. In a single mode fiber there's only one wavelength going through at any given time. Both the transmitter and receiver (should) know the wavelength so why does there need to be dispersion compensation? [link] [comments]  |
| What leads to transformer explosions emitting the colors they do? (i.e. green or blue vs red) Posted: 27 Dec 2018 06:50 PM PST Here in NYC, the sky was glowing a light bluish color 4 hours after sunset when a transformer blew up in a nearby neighborhood. [link] [comments]  |
| Posted: 27 Dec 2018 07:46 PM PST |
| Posted: 27 Dec 2018 11:08 AM PST |
| Why does lightning occur when a volcano erupts? Posted: 27 Dec 2018 05:30 PM PST |
| Posted: 27 Dec 2018 02:30 PM PST Say you're hunting a deer and you fatally wound it, would the bleeding stop like it normally would, if the wound wasn't fatal? [link] [comments]  |
| How can we tell that we are moving in space? Posted: 27 Dec 2018 04:50 PM PST I read that we travel 300 miles a second. That old of course include the sun I would figure. How do we know this. I mean I can understand and see that we know the earth moves around the sun, and I guess I can wrap my head around that we move around the galaxy too... I think I can at least sure but I mean how do we know that we are actually moving? Further more what tells us that we (the galaxy) is actually moving and not that just everything else is. Lastly if we are moving, why do we not see evidence of it like we so with comets? Shouldn't sun flares be longer on the side opposite the direction that it is moving too, as well as shorter on the outwardly facing side (the side that is facing into its forward direction? [link] [comments]  |
| How does that brain physically recall memories? Posted: 27 Dec 2018 08:24 AM PST Example when we recall a name previously forgotten" what are physical, cellular, and biochemical changes that occur in that instant that allow us to remember? [link] [comments]  |
| Is it possible to simulate simplest, smallest life form on a molecular level? Posted: 27 Dec 2018 12:01 PM PST Its difficult to create simplest life form physically in the lab, are we currently capable of doing it on supercomputers? [link] [comments]  |
| Posted: 27 Dec 2018 12:33 PM PST |
| Is there a Relationship between LDL Cholesterol and risk of CVD/atherosclerosis? Posted: 27 Dec 2018 04:39 PM PST Not sure if this belongs here, and I apologize if it doesn't. Over the holiday I had a conversation with someone who claimed that they had read some recent medical studies that claims there is no relationship between LDL Cholesterol and CVD (Cardiovascular Diseases) and/or atherosclerosis and that all past studies were wrong in that they were citing a flawed study that proved it. I am very ignorant of this topic so I was unable to respond with any meaningful counter arguments. Another person (second year nursing student) joined the conversation and retorted that there was plenty of evidence for the relationship between LDL-C and CVD. I was under the impression that the relationship of high LDL-C and CDV was common knowledge and that high levels of LDL-C was bad. I began my own research and found one article that clearly supports the first person's position but was unable to find conclusive evidence for the opposite (that high level of LDL-C contributes to higher risk of CVD). My two questions are: 1.) Is there any reliable sources (articles, studies, journals, etc) that would support the position that high levels of LDL-C are bad in that they contribute to a higher risk of CVD? 2.) where is the best place for me to research and find these studies on my own besides google scholar. Thanks. [link] [comments]  |
| Posted: 27 Dec 2018 09:07 AM PST |
| Is there evidence that other planets undergo plate tectonics similar to earth? Posted: 27 Dec 2018 02:58 PM PST |
| Why does ice stick to a metal spoon? Posted: 27 Dec 2018 11:06 AM PST |
| What's the difference between glass and crystal? Posted: 27 Dec 2018 03:21 PM PST |
| How was the first nucleic acid formed? Posted: 27 Dec 2018 06:54 AM PST Hi, I recently read online that the initial experiment about how the first nucleic acid was formed was tampered with (I think it was watson and kirk) where they showed the conditions that were during that time period and tried to recreate that experiment but it didnt show the nucleic acid being formed. Since it is the basis for all evolution I want to ask how do we know or hypothesize how it was formed since all of the later experiments use Watson&Kirk as their starting point [link] [comments]  |
| How does acid rain causes marble monuments to undergo discoloration? Posted: 27 Dec 2018 10:24 AM PST If white marble is calcium carbonate and acid rain is sulphuric and nitric acid, their reaction will give us calcium sulphate and calcium nitrate as products both of which are white in color. Then where is the discoloration coming from. Please explain with equations. [link] [comments]  |
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