Earthquake Megathread |
- Earthquake Megathread
- If a nuclear bomb went off in Boston harbor could scientists tell after the fact who had manufactured it, do they leave distinct radioactive signatures?
- Do black holes have electromagnetic field?
- How many layers are there in a modern integrated circuit?
- Do people that have degenerative diseases such as Alzheimer's lose their muscle memory as well?
- How is it possible that something as large as a possible Planet 9 has completely evaded visual observation?
- How did they measure hurricane wind speeds in the 1800's?
- Why does the Earth's rotation effect Rockets and not Planes?
- What is happening at a molecular level when a knife cuts through nylon rope?
- How is it that scissors can curl ribbons?
- Would global cooling create more land? If so, how much more land would be available before the whole earth freezes?
- Why is caesium the largest atom? Shouldn't element 118 be the largest?
- Does my peripheral vision have a different latency than objects I look directly at?
- [CHEMISTRY] How do chemical companies determine if one ingredient in a solution can be replaced by another?
- Do snakes that can 'see' heat, such as ball pythons, compare their 'heat vision' with their normal vision?
- What defines an equation of state?
- Can a human be allergic to any substance? As in, does every material have the potential to elicit an allergic response?
- Why is gold found in seams?
- On an alien planet, would a regular compass still point true north?
- In emergencies like on CDMX will using cellphone data on a very far state affect the capacity on CDMX cell towers to make calls and/or use cell phone data?
- Can someone with reading Aphasia "read" in Braille?
| Posted: 19 Sep 2017 01:19 PM PDT Hi everyone! Unfortunately, there have been recent reports of another earthquake in Mexico, a magntiude 7.1 centered about 100 miles from Mexico City. We had a previous megathread discussing the last earthquake (magnitude 8.1) off the coast less than two weeks ago. If you've got more questions about earthquakes, feel free to ask those here! Panel members will be in and out throughout the day so please do not expect an immediate answer. Again, for hurricane questions, please direct them to our hurricane megathread instead. Useful links: [link] [comments]  |
| Posted: 19 Sep 2017 11:59 PM PDT |
| Do black holes have electromagnetic field? Posted: 19 Sep 2017 11:44 PM PDT I read that black holes have three properties mass, spin, and charge. But if they have charge, then thet have an electromagnetic field. But then electromagnetic fields are described that carried by virtual photons. But nothing can leave a black hole event horizon, not even photons. What am I missing? [link] [comments]  |
| How many layers are there in a modern integrated circuit? Posted: 20 Sep 2017 12:48 AM PDT I'm getting how the raster dictates density of elements in IC in the horizontal plane over the wafer. But as I understand, there's the third dimension - so far mostly untapped because of heat dissipation necessity; the bit of wafer in a CPU is a rather flat square, not a cube. Still, if my understanding is correct, there's more than a single layer of the components on the wafer, they are stacked to a degree. How many layers though? And how thick such a layer is? [link] [comments]  |
| Do people that have degenerative diseases such as Alzheimer's lose their muscle memory as well? Posted: 19 Sep 2017 02:34 PM PDT |
| Posted: 19 Sep 2017 07:17 PM PDT I've heard that if there actually is a Planet 9, it's more than 10x the size of Earth. I understand that Planet 9 is extremely far away, but it seems that something that large could not avoid being seen for so long. How can it be that all of Earth's astronomers have missed it for so long? [link] [comments]  |
| How did they measure hurricane wind speeds in the 1800's? Posted: 19 Sep 2017 06:12 PM PDT Saw a post on facebook indicating the history of cat 5 hurricanes, and was curious how they measured wind speed as far back as 1850. Also, should I cross post this to r/AskHistorians? [link] [comments]  |
| Why does the Earth's rotation effect Rockets and not Planes? Posted: 20 Sep 2017 06:10 AM PDT Most rockets are launched into a prograde orbit as it's more efficient to do so with the earth's rotation. If I were to fly around the equator the planes their relative velocity would just be it's speed because it's already traveling at the speed of the earth's rotation before take off. Not matter what direction due to the reference frame or say a person on the ground both would appear at going the same speed just in alternate directions. (Assuming no other influence the efficiency will be the same). If I were to launch a rockets at the equator from the same locations into an orbit one with the rotation and one against it why then do we need to think about the earth's rotation for efficiency? Probably something simple but I can't get my head around it, hope you understand what I'm asking. Thanks. [link] [comments]  |
| What is happening at a molecular level when a knife cuts through nylon rope? Posted: 19 Sep 2017 03:14 PM PDT |
| How is it that scissors can curl ribbons? Posted: 19 Sep 2017 05:51 PM PDT Everytime I wrap a gift, I always ended it with the ribbon,on the gift (or box) being curled. I wondered how that happens. [link] [comments]  |
| Posted: 19 Sep 2017 10:05 PM PDT My hypothesis is based on the reverse of the polar ice caps melting. If there was a global cooling, then I imagine the polar ice caps would grow in size (more water freezes) and the ocean level would get lower, baring more land. [link] [comments]  |
| Why is caesium the largest atom? Shouldn't element 118 be the largest? Posted: 19 Sep 2017 01:55 PM PDT |
| Does my peripheral vision have a different latency than objects I look directly at? Posted: 19 Sep 2017 04:28 PM PDT For example. I have a timer counting down from 60. The timer is displayed in two spots on the left and the right. If I watch the timer on the right directly and the timer on my left is in my peripheral vision, do I see the timer on the left update after the timer on the right? Or do I see them update at the same time? Is this a real latency or a perceived latency? [link] [comments]  |
| Posted: 19 Sep 2017 09:22 AM PDT If two chemicals aren't the same, how would a company determine if something is a good replacement? [link] [comments]  |
| Posted: 19 Sep 2017 06:22 PM PDT I have a pet ball python, and I've been wondering this for a while. Basically, do pythons identify, with their normal vision, the source of the heat? The process I am imagining is just like the way humans compare their hearing to their sight, in order to identify the source of the noise. Am I correct at all, or do they interpret the senses completely differently? [link] [comments]  |
| What defines an equation of state? Posted: 19 Sep 2017 07:54 PM PDT I'm taking a thermodynamics course and learning about State Functions and Equations but am confused by some of the finer details. For example I can see online that enthalpy has an equation dH(S,P)= TdS + VdP. Is this considered an equation of state, or are the relations (dH/dS)p=T and (dH/dP)s=T the equations of state? Most publications I can find seem to use equations of state as a stepping stone for Maxwell equation or other derivations and don't spend any time specifically defining what equations of state are. [link] [comments]  |
| Posted: 19 Sep 2017 10:51 AM PDT |
| Posted: 19 Sep 2017 07:35 AM PDT I know that heavier elements basically form during supernovas, and I think the heaviest element a star like our sun will produce would be iron. So, the gold and all of the other heavy elements explode in an incredible display of violence, across the galaxy. Then we fast forward on to present day, and a bunch of the gold on earth has collected into a "seam". What's the geological process for this? And are we just incredibly lucky to have reasonably significant amounts of most naturally occuring elements? [link] [comments]  |
| On an alien planet, would a regular compass still point true north? Posted: 19 Sep 2017 07:33 AM PDT On Earth, "magnetic north" (the direction that compasses point) and one of the Earth's axes ("true north") happen to be in approximately the same place. This seams too neat and clean to be a coincidence, so would the same thing happen on an average alien planet with a magnetic field? Are magnetic poles 'drawn' to the axes of a planet, or is that just coincidence? [link] [comments]  |
| Posted: 19 Sep 2017 08:56 PM PDT |
| Can someone with reading Aphasia "read" in Braille? Posted: 19 Sep 2017 08:26 AM PDT So in class, my psych teacher was explaining how damage to the Angular Gyrus leads to aphasia, specifically Aphasia where you can't read properly. I was wondering if this also extends to and affects Braille. [link] [comments]  |
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