Are the rocks in the asteroid belt between Mars and Jupiter the same kind of rocks you’d find on the earth? |
- Are the rocks in the asteroid belt between Mars and Jupiter the same kind of rocks you’d find on the earth?
- What is more energy saving? To connect a fully charged device to a power bank for it to keep it's battery full or to wait for the device's battery to deplete and then use the PW to charge it
- What is happening in the brain when you are struggling to remember something?
- How do traditional filament lightbulbs fail?
- Why is Paris warmer than Quebec City, despite being further north?
- Would it be possible to detect objects that are just outside the Observable Universe by the gravitational influence they would have on objects that are near the edge of the Observable Universe?
- How do GPS satellites handle so much data traffic?
- Do electrons exist at a specific place at a given time?
- Why are battery voltages selected at the values they are? What is special about 12, 5, or 3.7 volts?
- What effect does long-term exposure to darkness have on the senses?
- What does it take to leave the moons gravitational field?
- What are some of the tools used in big data management? What kind of analysis are to be done when analysts receive huge data dumps?
- How can temperature be negative?
- Are the reasons for grey matter reductions in brain during and after stressful life events documented?
- How similar are the Bengal Tigers and Sumatran Tigers genetically?
- Magnetic fields and electric fields are manifestations of the same phenomena. They are inherently related. Is there a duality that exists between the gravitational field and something else? Thank you.
- Has anyone proved how many colors you would need if you had a cube with an arbitrary number of three-dimensional regions in it so that no two bordering regions are the same color? It would be like the four color theorem but in three dimensions.
- How large does an object have to be for it's gravity to noticeably affect light?
- If matter and antimatter annihilate and the result is gamma rays, can we reverse engineer this?
- What is the AdS/CFT correspondence?
- How do gamma rays make bad whiskey smoother?
- How is the focal length of a gravitational lens determined?
- What are the reasons for the observed decline in brain volume over the course of the last 20000 years?
| Posted: 14 Dec 2017 03:47 PM PST |
| Posted: 14 Dec 2017 07:21 PM PST |
| What is happening in the brain when you are struggling to remember something? Posted: 14 Dec 2017 01:49 PM PST |
| How do traditional filament lightbulbs fail? Posted: 14 Dec 2017 03:50 PM PST They have no moving parts, the filaments are protected from friction and corrosion ... what exactly is happening when they fail? What processes are involved? [link] [comments]  |
| Why is Paris warmer than Quebec City, despite being further north? Posted: 14 Dec 2017 09:46 AM PST |
| Posted: 14 Dec 2017 06:11 PM PST |
| How do GPS satellites handle so much data traffic? Posted: 15 Dec 2017 04:22 AM PST There has to be millions of people in a certain region using GPS at the same time.How do the satellites handle so much data and provide information to the user do quickly? [link] [comments]  |
| Do electrons exist at a specific place at a given time? Posted: 14 Dec 2017 07:29 PM PST I am having a difficult time getting a straight answer out of physicists for this question. I've been told by professors of physics and chemistry that an atom consists of a nucleus with electrons moving around it in orbitals and that we can't tell exactly where an electron is at any given time, we can only calculate the probability that an electron is in a given area at a specific time. Does this mean that the electrons don't exist at any specific place at a given time or is it just that we can tell where one is any given time. If it's just that we can't tell where one is at any given time but that they do exist at some specific place at any given time, is the reason we can't tell we they are just due to current technological limitations or is it believe that there are epistemological limitations to us ever being able to know where the electrons are at any given time regardless of how technologically advanced we become? [link] [comments]  |
| Why are battery voltages selected at the values they are? What is special about 12, 5, or 3.7 volts? Posted: 14 Dec 2017 07:42 PM PST |
| What effect does long-term exposure to darkness have on the senses? Posted: 14 Dec 2017 04:10 PM PST The senses I'm most curious about are sight, balance and Proprioception, though any information at all would be greatly appreciated :) [link] [comments]  |
| What does it take to leave the moons gravitational field? Posted: 14 Dec 2017 12:58 PM PST So I just saw the recordings of the Apollo mission leaving the moon and it got me wondering: what does it take to leave the moons gravity compared to leaving earth's? The Apollo had to first have enough combustion to slow down and land and then leave again. I know the gravity on the moon is several times les powerful than on earth but still it does not make that much sense to me. If we look at space x just now being ready to land a rocket again. How did they do it back in the day AND make it take-off again? This probably makes me sound like conspiracy theorist, wich I'm not. I'm just genuinely wondering how this was possible back then. Here is the video btw: https://www.facebook.com/IFeakingLoveScience/videos/2015291808491820/ [link] [comments]  |
| Posted: 15 Dec 2017 02:19 AM PST Im curious as to what kind of tools data scientists use to draw meaningful conclusions, other than the usual use of variance, mean and other common statistical tools a common high schooler will use. Any links to educate a data greenhorn like myself? [link] [comments]  |
| How can temperature be negative? Posted: 15 Dec 2017 01:21 AM PST |
| Posted: 14 Dec 2017 04:01 PM PST I mean for instance does prefrontal cortex lose grey matter due to some pruning mechanism of the brain ,due to excessive cortisol/glucocorticoids or some other reason? [link] [comments]  |
| How similar are the Bengal Tigers and Sumatran Tigers genetically? Posted: 14 Dec 2017 05:59 PM PST I'm writing a paper on the similarities between different species of big cats and I've found this bit of information quite hard to track down. [link] [comments]  |
| Posted: 14 Dec 2017 09:17 PM PST |
| Posted: 14 Dec 2017 12:31 PM PST |
| How large does an object have to be for it's gravity to noticeably affect light? Posted: 14 Dec 2017 12:24 PM PST |
| If matter and antimatter annihilate and the result is gamma rays, can we reverse engineer this? Posted: 14 Dec 2017 01:44 PM PST |
| What is the AdS/CFT correspondence? Posted: 14 Dec 2017 09:07 AM PST I know it deals with quantum gravity and quantum field theory, but can someone elaborate on this? As of 2015, Juan Maldacena's 1997 paper on the subject had over 10,000 citations, becoming the most highly cited article in the field of high energy physics. What was/is the significance of his paper? [link] [comments]  |
| How do gamma rays make bad whiskey smoother? Posted: 14 Dec 2017 11:10 AM PST I asked the same question on another subreddit, but I believe you can answer it in more depth, also I love physics (am currently studying biochemistry), so if you have any related facts, I'd love to hear them. I have read some articles on the internet that states if you irradiate bad whiskey with gamma rays, it will become much smoother. Also, if you irradiate cheap wine it loses it bitter aftertaste. You'd need about 200x the lethal dose for it to work. What is happening to the drink? Are all molecules afflicted by gamma radiation or just the less stable one's? Because it is neigh impossible create gamma rays without a particle accelerator or radioactive isotopes I thought would x-rays suffice, albeit having a lower energy than gamma rays, it is still ionizing radiation. All because making x-rays at home is (a bad idea) in the realm of possibilities thanks to ebay. Bonus fact: During my own "googling" to answer this question I stumbled upon this neat fact. Glass can be stained black by gamma rays, by heating it afterwards it becomes transparent again :) [link] [comments]  |
| How is the focal length of a gravitational lens determined? Posted: 14 Dec 2017 10:17 AM PST This question cropped up last weekend, and I had no idea how to solve it. Can somebody give me some pointers here, or point me to the right references? Thanks! [link] [comments]  |
| Posted: 14 Dec 2017 07:02 AM PST When asked I assumed it was due to the fact that we were witnessing an evolutionary process, that our brains were shrinking but becoming more efficient. But this doesnt seem to be the case. Furthermore I read that the decline in brai size is even more significant with women than men. Any solutions???? [link] [comments]  |
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