How many times do most galaxies rotate in their lifetimes? |
- How many times do most galaxies rotate in their lifetimes?
- When an object is travelling at speed, at what point does it go from being cooled (by air resistance) to heating up and eventually burning up?
- How do quantum computers get programmed?
- Are any of Einstein's predictions yet unproven, and if so, which would be the most groundbreaking if proven correct?
- What is generally used to cool down superconductive elements?
- When a supernova explode and collapse to a black hole, how much time does it takes from explosion to being a singularity ?
- Would our sun (Sol) be visible from Alpha Centauri?
- For a series circuit with a voltage source and three resistors, after current flows through all resistors, why does the voltage drop to zero?
- How are aqueous solutions of metal ions prepared?
- What would happen with two telescopes?
- When searching for exoplanets, do astronomers have to account for the planets size?
- Now that the Earth and Moon have been tidally locked for a decent while, what interesting differences can we find between the Regolith (or deeper layers) on either "side" of the moon?
- Are there any promising New ways to fight antibiotic resistance in bacteria?
- Whаt сausеs осulаr dоmіnаnсе?
- How does olfactory fatigue work?
- When does a star 'ignite' and is it instantaneous?
- How stable are the Lagrange points?
- In DC power transmission down a wire, what is really transmitting the power, the electrons slowly bumping along, or the photons propagating the EM field?
- Is it possible to pick 6 colors with the most amount of contrast between them?
- If an object is in orbit, meaning it is in free-fall, what stops it from accelerating indefinitely?
- What are the greatest pros and cons of MOND, Teves, and Conformal Gravity?
- How does the decibel system in water compare to in air? Do humans perceive things to be louder underwater?
- With new experiments showing the speed of light isn't constant, what does this mean for relativity?
| How many times do most galaxies rotate in their lifetimes? Posted: 30 Sep 2016 04:58 AM PDT |
| Posted: 29 Sep 2016 05:41 PM PDT When I ride my motorbike at 100km an hour, the air cools me and the bike, when a rocket re-enters the earths atmosphere, it appears to heat up. Is there an exact speed at which this happend? [link] [comments]  |
| How do quantum computers get programmed? Posted: 30 Sep 2016 05:05 AM PDT It's mor a "Where is the program saved and where can we save the results from the programms?" question, but the real programming is interesting as well. I don't thin they use Java or something like that ^ [link] [comments]  |
| Posted: 29 Sep 2016 02:27 PM PDT Over 100 years after they were predicted by General Relativity, gravitational waves were observed by LIGO last year. Are there any more of his predictions floating out there? [link] [comments]  |
| What is generally used to cool down superconductive elements? Posted: 29 Sep 2016 08:01 AM PDT Not just in labs, I'd like to know what is used outside of it because I figure that labs probably use some way that is really effective but also expensive, which is logical, but unuseable in other ways beacuse of the cost, so I'm wondering what it is that does the trick for the outside of the lab use. EDIT: Thanks, I've been wondering for some time so I asked here rather than browse and possibly end up with wrong info. [link] [comments]  |
| Posted: 29 Sep 2016 02:17 PM PDT Is the speed of the density increase constant, accelerated, decelerated ? In the time frame of a distant external observer [link] [comments]  |
| Would our sun (Sol) be visible from Alpha Centauri? Posted: 29 Sep 2016 06:55 PM PDT Imagine an Earth like planet with an Earth like atmosphere in orbit around one of the stars in the Alpha Centauri system. Correct me if I'm wrong but on a cosmic scale it wouldn't make a huge amount of difference which star this planet is in orbit around. Would our star be visible to the unaided eye from this planet? [link] [comments]  |
| Posted: 30 Sep 2016 06:49 AM PDT Voltage drops across every resistor. Say for example we have a 12V power source and after going through three resistors with 3ohms each, the 12V drops by 4V per resistor until it reaches zero. But is it really zero? Say, if we connect a fourth resistor after the third resistor, shouldn't there be a voltage reading across the fourth resistor? What should be the voltage value after going across three resistors if not zero? [link] [comments]  |
| How are aqueous solutions of metal ions prepared? Posted: 30 Sep 2016 06:14 AM PDT |
| What would happen with two telescopes? Posted: 29 Sep 2016 05:12 PM PDT If you had one telescope and were able to zoom into the viewfinder of another telescope situated far away? Would you have a view of what the person looking through the second telescope would see, or would it be the combined magnification of the two telescopes? [link] [comments]  |
| When searching for exoplanets, do astronomers have to account for the planets size? Posted: 29 Sep 2016 04:25 PM PDT I was always taught in school that the more mass an object has, the stronger its gravitational force becomes. Does that mean that exoplanets that are considered habitable have to be within a certain mass range so that are bodies don't just collapse from gravitational pull; like they would if you could theoretically go onto a neutron star? [link] [comments]  |
| Posted: 29 Sep 2016 03:53 PM PDT |
| Are there any promising New ways to fight antibiotic resistance in bacteria? Posted: 29 Sep 2016 04:47 PM PDT I know there is some interesting research into new antibiotics for which there are no resistance yet, but what seems to be the most interesting tool aside from that to fight these bacteria? [link] [comments]  |
| Posted: 29 Sep 2016 03:21 PM PDT |
| How does olfactory fatigue work? Posted: 29 Sep 2016 04:25 PM PDT I can't seem to find specific scientific information about how it exactly works. Do we not really know? Or am I just bad at googling? The wikipedia page is surprisingly lacking... (specific as in what happens at the molecular level) [link] [comments]  |
| When does a star 'ignite' and is it instantaneous? Posted: 29 Sep 2016 12:28 PM PDT |
| How stable are the Lagrange points? Posted: 29 Sep 2016 12:52 PM PDT We know that L1, L2, and L3 are inherently unstable, whereas L4 and L5 are stable. But how much does it take to actually affect the equilibrium of an object in an unstable Lagrange point? Let's say we have a ship parked at L1 between the Sun and the Earth. Now if this ship was to move a little closer to the Sun, its gravitational pull would obviously pick up, and the ship would inevitably fall towards the sun. But how much instability are we talking about? Astronomical scales are pretty huge in general, but how much displacement would it take to affect the ship's equilibrium? Is it in the order of the meter? Kilometer? Megameter? [link] [comments]  |
| Posted: 29 Sep 2016 11:57 AM PDT Who is the real hero? I'm guessing it's more complicated then this, does my question even make sense? [link] [comments]  |
| Is it possible to pick 6 colors with the most amount of contrast between them? Posted: 29 Sep 2016 11:57 AM PDT Not sure if this is in the right sub, or if it's the right flair. Shout-out to /r/cubers! I'm asking this because I solve Rubik's Cubes and the like as a hobby. A common thing to do is to swap out the stickers on your cubes to increase the contrast between them so that color recognition is easier. My question is, is there a set of 6 colors that is optimally contrasted from one another? [link] [comments]  |
| If an object is in orbit, meaning it is in free-fall, what stops it from accelerating indefinitely? Posted: 29 Sep 2016 03:53 PM PDT |
| What are the greatest pros and cons of MOND, Teves, and Conformal Gravity? Posted: 29 Sep 2016 09:48 AM PDT I am currently working on comparing these theories in relation to large cluster rotation and a few other areas. I am really new to this research so I was just hoping to see if I could get some back and forth on the topic along with all the articles and presentations I have been reading/watching. I have a good grasp on the concepts of each but the math isn't totally clear to me yet so I apologize for that. Thanks! [link] [comments]  |
| Posted: 29 Sep 2016 09:45 AM PDT Sperm whales are known to produce sounds of over 200 dB. Is this the same thing as 200 dB in air? Would it burst my eardrums if I was close to the whale? [link] [comments]  |
| With new experiments showing the speed of light isn't constant, what does this mean for relativity? Posted: 29 Sep 2016 11:35 AM PDT Reference: https://www.sciencenews.org/article/speed-light-not-so-constant-after-all I'm naive on this subject so, somebody please explain how this could affect our theory of relativity. [link] [comments]  |
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