When did scientists realize that Jupiter had no solid ground? |
- When did scientists realize that Jupiter had no solid ground?
- We hear a lot about new ways to generate electricity, such as fusion. But are there any new developments in the way we harness heat and transform it into electricity?
- What determines when our hunger is satisfied?
- What does the Hubble constant represent?
- Why is India a “subcontinent”, but not the Arabian Peninsula or Greenland? Both are roughly the same size as India, and they’re both more separated from their “parent continents” than India is.
- How did Issac Newton go about making the primary mirror for his Newtonian telescope?
- How does the hardness of water ice at temperatures near 0 K compare to the hardness of rock (say granite) at room temperature?
- Can Cherenkov radiation occur in materials other than water?
- Is there a mathematical way to represent distribution of a substance through stirring?
- What is the difference among CT scans, PET scans, and MRIs? More specifically, what is each one used for?
- How long does it take antibacterial soaps or gels to kill 99% of bacteria?
- What is nowadays real world application of Reed-Muller codes?
- How Do Scientists Control What Cells Embryonic Stem Cells Turn Into?
- Why do stimulants calm people with ADD/ADHD?
- How are we not losing signals constantly if satellites are orbiting around the Earth?
- How did the idea develop from 'the sun is a ball of literal fire' to 'it is a nuclear fusion reactor'?
- [Biology] Can dogs recognize themselves from a picture or video or live (I.E. selfie camera) video/picture?
- What are the implications of negative friction?
- Why is it considered implausible for a piston-powered, propeller-driven aircraft to break the sound barrier, and then how does a prop setup fundamentally differ from a turbine setup?
- What are some of the oldest games?
- How do scientists measure "positive selection" for specific genes?
- What is the math/physics behind a sonic boom?
| When did scientists realize that Jupiter had no solid ground? Posted: 26 Feb 2018 04:36 AM PST I watched the 1953 version of "War of the Worlds" over the weekend, and it said that the aliens wouldn't go there, because the surface was largely volcanic, so I was wondering when they realized that it has no solid ground. Thanks in advance! [link] [comments]  |
| Posted: 25 Feb 2018 08:56 PM PST I hear a lot about fusion and "new-generation" fission reactors being potentially revolutionary in the way we generate electricity. However, it is my understanding that it will be a new way to generate heat, while we will still use old-school steam turbines to convert heat into electricity. My question is, are there any theoretical or "moonshot" ideas of a more efficient way to generate electricity [link] [comments]  |
| What determines when our hunger is satisfied? Posted: 26 Feb 2018 06:05 AM PST Is it the amount of calories consumed? Volume of the food we ate? How saturated our stomach is? A combination of all of this? For example if I would drink 2000 calories worth of olive oil, should I technically have satisfied my daily need of hunger? [link] [comments]  |
| What does the Hubble constant represent? Posted: 26 Feb 2018 06:12 AM PST A recent NASA report indicates that scientists think the universe is expanding at an increasing rate. The Hubble constant was revised up to 73 km per second per megaparsec. Does this mean that if you take two points in space that are a megaparsec apart, the space between them is growing at 73 km/s? So in 4107 years, these two points will be separated by an additional LY? [link] [comments]  |
| Posted: 25 Feb 2018 08:58 PM PST |
| How did Issac Newton go about making the primary mirror for his Newtonian telescope? Posted: 25 Feb 2018 10:20 PM PST Reflector telescope mirrors are slightly concave to the point where the human eye can't see the curve. With Newton living centuries ago, what method did he use to make a mirror with that sort of parabolic curve? [link] [comments]  |
| Posted: 25 Feb 2018 03:31 PM PST |
| Can Cherenkov radiation occur in materials other than water? Posted: 26 Feb 2018 07:27 AM PST So the blue glow around nuclear materials and reactors is caused by electrons traveling faster than light in water. Simply put, can this phenomenon occur in other materials? What about transparent solids? [link] [comments]  |
| Is there a mathematical way to represent distribution of a substance through stirring? Posted: 25 Feb 2018 05:32 PM PST Say I add a teaspoon of salt to a 1 quart pot of tomato sauce. How does stirring the pot distribute the salt? Is there a knowable number of stirs that maximizes distribution? [link] [comments]  |
| Posted: 26 Feb 2018 05:53 AM PST What might a CT scan find that a PET scan or MRI might not? How does a doctor decide which one to order? [link] [comments]  |
| How long does it take antibacterial soaps or gels to kill 99% of bacteria? Posted: 25 Feb 2018 03:50 PM PST Is it instant for does it take time for all the bacteria to die that are exposed to the soap or gel? [link] [comments]  |
| What is nowadays real world application of Reed-Muller codes? Posted: 25 Feb 2018 08:39 PM PST |
| How Do Scientists Control What Cells Embryonic Stem Cells Turn Into? Posted: 25 Feb 2018 06:40 PM PST |
| Why do stimulants calm people with ADD/ADHD? Posted: 25 Feb 2018 09:42 AM PST |
| How are we not losing signals constantly if satellites are orbiting around the Earth? Posted: 25 Feb 2018 06:11 PM PST |
| Posted: 25 Feb 2018 07:45 AM PST For many years it was the idea that the sun is an actual ball of fire but we now know that it makes its thermal energy through nuclear fusion, how did scientist make such a big leap and what were, if any, intermediate theories before the final theory? [link] [comments]  |
| Posted: 25 Feb 2018 02:12 PM PST |
| What are the implications of negative friction? Posted: 25 Feb 2018 03:31 PM PST How would normal objects behave on a surface with a negative amount of friction? Is this even possible? [link] [comments]  |
| Posted: 25 Feb 2018 09:33 AM PST |
| What are some of the oldest games? Posted: 25 Feb 2018 06:44 PM PST This is including any set of rules that are followed to culminate in a winner? [link] [comments]  |
| How do scientists measure "positive selection" for specific genes? Posted: 25 Feb 2018 08:59 AM PST I recently found this article, which I find interesting, but I can't seem to figure out from the article how the authors measure "positive selection". So my question is about this article but also genetics in general: is there some genetic marker that can indicate or be used to measure "positive selection"? [link] [comments]  |
| What is the math/physics behind a sonic boom? Posted: 25 Feb 2018 03:33 PM PST I have taken physics 1 and 2 but I have never really been taught what the physics is behind a sonic boom. [link] [comments]  |
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