AskScience AMA Series: We are the organizers of Celebrating Einstein, a month-long interdisciplinary science outreach event honoring Einstein's theories and achievements. Ask Us Anything! |
- AskScience AMA Series: We are the organizers of Celebrating Einstein, a month-long interdisciplinary science outreach event honoring Einstein's theories and achievements. Ask Us Anything!
- Why is gold soft?
- What is difference between advection and convection?
- Can light make a sound?
- Would shooting down a nuclear missile result in a nuclear explosion?
- Why does the ISS maintain a radial-in attitude?
- Why don't electrons cross the plates of charged capacitors?
- How are radio waves 1s and 0s?
- What wavelengths does sulfur emit as electrons jump between energy levels?
- How do we know when the Yellowstone National Park Super volcano last erupted?
- Is there uncertainty in the spins of bound electrons in orbitals?
- How does color index relate to a star's "Habitable Zone"?
- Why are cardiac valves from pigs not rejected by human bodies?
- Can everything become a liquid gas or solid?
- Is heat transfer through metals non-linear?
- If I steep a tea bag in hot water, will it eventually reach equilibrium and stop diffusing flavor and caffeine?
- When measuring radiation, what is the difference between "mrem" and "cpm" and which is more important in determining exposure?
- Do plants with naturally red leaves have different chemical processes for photosynthesis than green plants, or is the color difference unrelated?
- Is infinity a number or concept?
- How does a low atmospheric pressure affect an air flow of a vacuum pump?
- Is the Pacific Ocean calmer than the Atlantic, and why or why not?
- By what means do geneticists correlate biological data with geography?
| Posted: 21 Apr 2017 04:00 AM PDT Hi Reddit! We are some of the many organizers for Celebrating Einstein, a month-long, interdisciplinary outreach event that includes spoken lectures, danced lectures, readings, interviews with physcists, symphony performance, field trips for West Virginia schools, artistic interpretations of Einstein's theories, and more. Over 100 years ago, Einstein predicted the existence of gravitational waves, and we are just beginning to detect them now. Our goal is to communicate the beauty and significance of Einstein's theory of General Relativity, its predictions, and the recent detection of gravitational waves announced only last year with the public. Check out our website for a full list of the events we've organized, and we'd love to talk about the science, the outreach, the organization, or anything! We have four organizers from the physicist/astronomer side joining us today:
We'll be on starting at 12 PM ET (17 UT), so ask us anything! Celebrating Einstein was originally produced by Montana State University and the eXtreme Gravity Institute. The West Virginia Celebrating Einstein event is sponsored through NSF award number 1458952, the WVU Department of Physics & Astronomy, the WVU School of Theatre & Dance, the West Virginia Space Grant Consortium, and the WVU Eberly College of Arts & Sciences. [link] [comments]  |
| Posted: 21 Apr 2017 05:11 AM PDT Vague I know but is it because of the atomic structure? Tungsten a much much "harder" material is 5 electrons away from gold and have the same electron configuration. I noticed that the grouping on the periodic table shows similar hard/soft properties of elements by the group number. I thought this had more to do with electron structure than physical properties? [link] [comments]  |
| What is difference between advection and convection? Posted: 21 Apr 2017 01:36 AM PDT |
| Posted: 21 Apr 2017 06:55 AM PDT Is it possible to turn on a light with such intensity as to cause a vibration that could be heard? I figure light is made of particles and sound is just compressions of matter. So could light possibly make a sound? [link] [comments]  |
| Would shooting down a nuclear missile result in a nuclear explosion? Posted: 20 Apr 2017 06:25 PM PDT Regarding a successful missile defense system, intercepting a nuclear missile launch. [link] [comments]  |
| Why does the ISS maintain a radial-in attitude? Posted: 20 Apr 2017 11:50 AM PDT In almost every photo of the International Space Station, you can clearly see that the cupola module is always pointing towards the earth. That means that the ISS maintains a constant attitude relative to Earth and that it's spinning at 1 rotation/orbit (90 min) I understand that it doesn't need any energy to maintain this low angular speed, but I assume that it does create some potentially avoidable problems: • Small centrifugal accleration on the outer most modules. • EVA astronauts will maintain the linear velocity of the spin, thus moving away from the station after they exit. • Docking: I just can't wrap my head around how stuff could dock to the ISS if it's spinning at 4°/min (unless it stops spinning for docking maneuvers). So why is it spinning? Just to maintain a view for the cupola at all times? Does it stop spinning during EVAs and docking? [link] [comments]  |
| Why don't electrons cross the plates of charged capacitors? Posted: 20 Apr 2017 08:51 PM PDT So I'm taking physics now and I still have trouble understanding this. If there is an electric field across the plates, why wouldn't the electrons just cross the space in between the plates instead of going the long route on the wire to the opposite plate. I'm also confused as to why one plate is positive and the other is negative in the first place. Shouldn't the like charges want to repel each other and hence not accumulate on a plate to begin with? Apologies in advance if this is common knowledge I just always have been confused by this. [link] [comments]  |
| How are radio waves 1s and 0s? Posted: 20 Apr 2017 02:37 PM PDT Looking at wifi, how is binary transmitted via radio waves? Is there a difference in amplitude? Phase changes? This page has some good info, just curious how wifi works specifically; visuals would be helpful if you've got em [link] [comments]  |
| What wavelengths does sulfur emit as electrons jump between energy levels? Posted: 20 Apr 2017 07:38 PM PDT I know that the electrons go between the various energy levels and they emit photons at exact wavelengths, but what wavelengths does it emit? All the sources I've found have either been really inexact or super technical. [link] [comments]  |
| How do we know when the Yellowstone National Park Super volcano last erupted? Posted: 20 Apr 2017 09:09 PM PDT I know that scientists say that it should erupt every 600,000 years but it hasn't erupted for 640,000 years, how do we know that it erupted 640,000 years ago? [link] [comments]  |
| Is there uncertainty in the spins of bound electrons in orbitals? Posted: 20 Apr 2017 03:49 PM PDT As per the Heisenberg uncertainty, we can't know the exact spin of a particle in all directions since different spin components are non-commuting. But in such a case, why do we say that electrons in orbitals occupy strictly either spin-up or spin-down states? I realize it is possible to fully know the spin in exactly one direction, but is it not possible that the electrons in an orbital might have spins that are not exactly parallel (nor antiparallel) with each other? [link] [comments]  |
| How does color index relate to a star's "Habitable Zone"? Posted: 20 Apr 2017 10:34 AM PDT It seems intuitive that (for a given luminosity) the hotter a star, the further out its habitable zone would be. Is this an accurate correlation? [link] [comments]  |
| Why are cardiac valves from pigs not rejected by human bodies? Posted: 20 Apr 2017 06:37 AM PDT The problem with the body rejecting organs/tissues is huge and mostly entails the usage of pharmaceuticals preventing the rejection. Why can be transplant cardiac valves from pigs without having a rejection (in most cases)? [link] [comments]  |
| Can everything become a liquid gas or solid? Posted: 20 Apr 2017 09:23 AM PDT |
| Is heat transfer through metals non-linear? Posted: 20 Apr 2017 01:40 PM PDT When a metal heats up from a contact with a heat source. does the rate at which that heat moves through change as temperature increases? [link] [comments]  |
| Posted: 20 Apr 2017 09:07 AM PDT |
| Posted: 20 Apr 2017 08:51 AM PDT I've noticed that most modern geiger counters can be switched from rems to sieverts to counts per minute. When attempting to measure radiation exposure for workers, which of these measurements should be used? What is the difference? [link] [comments]  |
| Posted: 20 Apr 2017 09:49 AM PDT |
| Is infinity a number or concept? Posted: 20 Apr 2017 04:08 AM PDT |
| How does a low atmospheric pressure affect an air flow of a vacuum pump? Posted: 20 Apr 2017 10:42 AM PDT My science club is planning on releasing a high-altitude balloon with a vacuum pump on board to collect some samples. The pump we're planning to use is the Boxer 3KD model. The technical data says it has a maximum free flow of 18l/min. Of course the air pressure in stratosphere is really low so I was wondering how will it affect the flow of the air in the pump? Is there any way to calculate it? [link] [comments]  |
| Is the Pacific Ocean calmer than the Atlantic, and why or why not? Posted: 20 Apr 2017 07:50 AM PDT I remember hearing as a kid that the Pacific Ocean was named such because it was more peaceful than the Atlantic. Is that true? Or is it just an odd story. Also, can one ocean be calmer than the other? I am thinking of "calmer" as being less storms, smaller waves, and other conditions that would make sailing easier on one compared to the other. [link] [comments]  |
| By what means do geneticists correlate biological data with geography? Posted: 20 Apr 2017 10:33 AM PDT How do geneticists connect DNA data with geographic points? How can geneticists see migration patterns and correlate them with locations on the globe? [link] [comments]  |
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