Why is that when you subtract a number from its reverse, the difference is a product of 9? |
- Why is that when you subtract a number from its reverse, the difference is a product of 9?
- Does space-time have an equivalent to "viscosity" that affects the propagation of gravitational waves?
- Does listening to a sound through a speaker have all the same frequencies as listening to it live, or is it just an approximation?
- Can an object teleport because of Quantum Mechanics?
- Ligo: What was the period of the black holes in the observed merger events?
- How do electrons move/quantum tunnel in pi bonds?
- If two photons interfere to form a standing wave field, does their energy density cancel in the nodes as well? What would the gravitational field stemming from a sufficiently intense standing wave field look like?
- Where does the mass go in two merging black holes?
- Why is sodium such a good preservative?
- why is 10^18 = 1e+18?
- does the Sun emit anything?
- How did people who lived in islands reach them before the discovery of sailing?
- Do gun waiting periods effect suicide rates?
- Do bees socialize with bees from other hives?
- If someone says something next to you while you're asleep, you won't "hear" it. However, if someone shoots a gun next to you, you would instantly wake up knowing that you just heard a gunshot - why?
- Can bugs get decompression sickness? Or altitude sickness?
- Why doesn't DNA get tangled inside the nucleus?
- Mosquito trying to eat a lemon?
- If a magnet spinning in deep space will eventually stop because it emits energy in the form of radio waves, how is angular momentum conserved?
- What makes gravity weak enough to not pull the inner planets into the sun, but strong enough to keep distant objects like Pluto in orbit?
| Why is that when you subtract a number from its reverse, the difference is a product of 9? Posted: 15 Jun 2016 02:10 PM PDT Same as the title. Why is it that 41-14 or 52-25 all equal products of 9? [link] [comments]  |
| Posted: 15 Jun 2016 11:51 AM PDT I listened to a podcast this morning on the "Sonification" of data. The podcast discussed the techniques to convert the LIGO gravitational wave detector data into sound which the research team used in their analyses. The podcast drew a lot of parallels between gravitational waves and sounds waves, prompting the thought that sound wave propagation and attenuation through a medium is affected by things like the density and viscosity of the medium. Are there equivalents to the properties for space-time -ie some property of space-time that we can derive based on how much the gravitational wave has attenuated over distance traveled? [link] [comments]  |
| Posted: 15 Jun 2016 12:06 PM PDT If it does contain all the same frequncies, how to the diaphragms in the speaker replicate dozens or so instruments and singers simultaneously? [link] [comments]  |
| Can an object teleport because of Quantum Mechanics? Posted: 16 Jun 2016 01:25 AM PDT Correct me if i'm wrong but from what i know, every object has a wavefunction that has a value at every point in space, and the square of the amplitude is the probability of finding the object at the place. So if an unfathomable number of events were to take place in a universe, can an object teleport due its probability of being far far away from its original position? [link] [comments]  |
| Ligo: What was the period of the black holes in the observed merger events? Posted: 15 Jun 2016 12:27 PM PDT Congrats to the LIGO team on another one! I know that there was a sound bite produced of the original merger, and was wondering if that frequency was accurate, or significantly sped up. What would be the observed orbital period and relative size of the black holes in the first merger as they approached? And the second (being much much smaller)? I'm trying to wrap my head around the speed and scale of these amazing events. Thanks! [link] [comments]  |
| How do electrons move/quantum tunnel in pi bonds? Posted: 16 Jun 2016 07:03 AM PDT I am doing a project focused on the quantum nature of electrons in chemistry, as I understand pi bonds involve an orbital that is of two separate areas. How do electrons move between these two areas? Don't hesitate to take it back to basics as I only have some a level chemistry and basic quantum knowledge. All responses appreciated! [link] [comments]  |
| Posted: 16 Jun 2016 06:05 AM PDT |
| Where does the mass go in two merging black holes? Posted: 15 Jun 2016 08:46 PM PDT So I was reading the article from this reddit post and saw the calculated new black hole from the merging is less then the original two. From the article. the orginal two were both 14.2 and 7.5 times the mass of our star, but the new black hole was only 20.8 times the mass. So where did .9 times the mass of our sun go? Edit: Direct Link to Article [link] [comments]  |
| Why is sodium such a good preservative? Posted: 15 Jun 2016 07:31 PM PDT |
| Posted: 16 Jun 2016 04:42 AM PDT |
| Posted: 16 Jun 2016 06:43 AM PDT I know the Sun emits light and UV rays, but does it emit anything more physical like helium? [link] [comments]  |
| How did people who lived in islands reach them before the discovery of sailing? Posted: 15 Jun 2016 06:56 PM PDT |
| Do gun waiting periods effect suicide rates? Posted: 15 Jun 2016 04:48 PM PDT This question occurred to me and I was surprised to find that google didn't return any really good info. What studies are out there about this and why don't they get more publicity? [link] [comments]  |
| Do bees socialize with bees from other hives? Posted: 16 Jun 2016 08:32 AM PDT |
| Posted: 15 Jun 2016 06:29 PM PDT |
| Can bugs get decompression sickness? Or altitude sickness? Posted: 15 Jun 2016 12:24 PM PDT A buddy told me a story about how some researchers were trying to see if ants would survive a fall from the top of the empire state building but couldn't test it because the ants exploded on the way up. But if they had led them up slowly, would the ants have survived? What if you grow ants at the top of the empire state building and then they fall? What happens then? This is all I could find about animals and decompression sickness: http://news.nationalgeographic.com/2015/08/150819-whales-dolphins-bends-decompression-sickness/ But I wanna know about bugs. [link] [comments]  |
| Why doesn't DNA get tangled inside the nucleus? Posted: 15 Jun 2016 08:25 AM PDT We've got about 1.8m of DNA in our nuclei and for most of the time it's not condensed so why isn't it just a single hypercomplex knot like my headphones when I put them into my pocket? [link] [comments]  |
| Mosquito trying to eat a lemon? Posted: 15 Jun 2016 08:27 PM PDT Today at dinner my girlfriend and I noticed a mosquito aggressively attempting to feed on a lemon. Photo documentation: http://i.imgur.com/ERbesV8.jpg I was wondering why it wanted the lemon so bad? Is it sick? Everything I have read so far is that lemons are some kind of repellent. [link] [comments]  |
| Posted: 15 Jun 2016 03:43 PM PDT The question of the magnet spinning in deep space was previously asked and the consensus was that it would eventually stop. But I am wondering how angular moment would be conserved? Can radiated EM waves carry angular momentum? [link] [comments]  |
| Posted: 15 Jun 2016 02:36 PM PDT |
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