Why do sunburns seem to "radiate" heat? |
- Why do sunburns seem to "radiate" heat?
- Why do pimples develop on the face far more than rest of the body?
- Why do my clothes feel “crunchy” after drying them on a clothesline?
- After the recent eruption in Hawaii, it is clear to see how it affects life on land. My question now is how does it affect life in the ocean? Does the water in contact with the lava super heat it, killing off any organisms living close by?
- Why do the electric and magnetic fields of a light wave peak and trough at the same time?
- [Planetary Sciences] Why is it that sometimes lightnings have no sound? And why does this seem to happen only when there is no rain?
- Do the tides affect the Earth's mantle? How much?
- Are there any theories on the relationship between gravitational forces and electromagnetic forces?
- Why are the states of matter distinct phases, rather than a gradient?
- How does Cherenkov Radiation actually work?
- What would happen if a single atom slid down a slope?
- What would the first living cells have been feeding on?
- What is the heaviest particle on baryons ?
- Why do a lot of hobby rockets use sugar and potassium nitrate as fuel?
- How do we estimate the annual emission of CO2 from volcanoes?
- Why is Silicon irradiated in nuclear reactors?
- Can the human body have too much blood?
- Can a cloud travel all the way round the earth?
- Does a video of an empty, stationary room have a smaller file size than a video of things moving?
| Why do sunburns seem to "radiate" heat? Posted: 09 Jun 2018 12:46 PM PDT |
| Why do pimples develop on the face far more than rest of the body? Posted: 09 Jun 2018 11:48 AM PDT |
| Why do my clothes feel “crunchy” after drying them on a clothesline? Posted: 09 Jun 2018 10:27 AM PDT I'm American, and normally dry my clothes in a machine dryer and they always come out feeling soft, even if I don't use any fabric softener or dryer sheets. I'm on vacation in Italy and have had to dry my clothes outside on clotheslines in several places, but they always feel rough and crunchy once they're completely dry. What's the difference? [link] [comments]  |
| Posted: 09 Jun 2018 11:31 AM PDT |
| Why do the electric and magnetic fields of a light wave peak and trough at the same time? Posted: 10 Jun 2018 02:09 AM PDT I know simultaneously that the energy of a wave is constant, and is determined by E = hf. I also know that the energy in an electric field and magnetic field is proportional to E and B squared respectively. Hence, since the two perpendicular waves are in phase, there are points in space where they have no energy stored (since they're both zero) in the electric and magnetic field. Where, therefore, is this energy conserved? Is there an equation for the amount of energy stored instantaneously in the derivative-dependent parts of Faraday's law and the Ampere-Maxwell law? [link] [comments]  |
| Posted: 09 Jun 2018 03:17 PM PDT I'm just watching some really cool 'dry lightning' storm out of my place right now. In the midst of the coolness of the show, I started thinking about this! Thanks in advance! [link] [comments]  |
| Do the tides affect the Earth's mantle? How much? Posted: 10 Jun 2018 02:33 AM PDT |
| Are there any theories on the relationship between gravitational forces and electromagnetic forces? Posted: 10 Jun 2018 01:19 AM PDT These forces are considered fundamental (along with the strong and weak forces). Electromagnetism used to be thought of as 2 different forces, the electrical and magnetic, until they're relationship was discovered. Has their been any work done on finding if they're is a correlation with the electromagnetic and gravitational forces? [link] [comments]  |
| Why are the states of matter distinct phases, rather than a gradient? Posted: 09 Jun 2018 11:19 AM PDT From my understanding, the (main) states of matter depend on how much energy an atom has or how much it is moving around, so the atoms of something solid would be still or barely moving, the atoms of a liquid would be moving fairly quickly, and the atoms of a gas would be moving very quickly. Then, the state of matter changes based on temperature. So, here's my question: Why does matter suddenly shift states at boiling and melting points instead of kind of just getting less and less solid, or more gaseous, etc? Thanks! [link] [comments]  |
| How does Cherenkov Radiation actually work? Posted: 09 Jun 2018 07:55 PM PDT I understand it is a particle exceeding the speed of light in the medium it is travelling through (and not exceeding the hard constant c). But I don't understand how it actually works. Also given that c can be exceeded in a medium, why can't it be exceeded in a vacuum? [link] [comments]  |
| What would happen if a single atom slid down a slope? Posted: 09 Jun 2018 10:38 PM PDT I'm trying to understand why gravity can be resolved into a vertical and horizontal component. Such as when a snowboarder goes down a hill. To me it seems that gravity is purely a downward force. So it seems like the horizontal force comes out of nowhere. I understand that the horizontal force is some kind of reaction off the inclined plane. But if the object has no horizontal force to start with (because gravity is not horizontal), how can the plane produce a horizontal reaction force? I suspect the answer is something to do with how atoms interact. But every explanation I find just hand-waves as to where the horizontal force actually comes from. So what if there was just a single atom sliding down a perfect slope of atoms? How would a horizontal force be produced in this case? [link] [comments]  |
| What would the first living cells have been feeding on? Posted: 09 Jun 2018 12:00 PM PDT |
| What is the heaviest particle on baryons ? Posted: 10 Jun 2018 02:02 AM PDT There was no certain info about it on the web sites i searched. I only saw bottom omega is heavier than others but there was not too much on the list and if i know correctly there is around 300 of them :D [link] [comments]  |
| Why do a lot of hobby rockets use sugar and potassium nitrate as fuel? Posted: 09 Jun 2018 03:21 PM PDT Seems like every video I've seen uses a combination of sugar and potassium nitrate as fuel, what makes these two work so well together? [link] [comments]  |
| How do we estimate the annual emission of CO2 from volcanoes? Posted: 09 Jun 2018 04:05 PM PDT My brother is skeptical of global warming and thinks that the amount of CO2 emitted by volcanoes is much greater than the amount of CO2 by industry. I'm curious as to how this number is measured seeing that the USGS among other sites say that the amount by volcanoes is lesser than the amount from industry [link] [comments]  |
| Why is Silicon irradiated in nuclear reactors? Posted: 09 Jun 2018 03:57 PM PDT I was watching this video when they mentioned uncontrollably irradiating silicon boules for semiconductors. I was under the impression it takes ultra pure silicon for the semiconductor industry to manufacture chips with precision. Are they doing this for non-precise electronic components like diodes? Why is this happening? [link] [comments]  |
| Can the human body have too much blood? Posted: 09 Jun 2018 11:01 AM PDT |
| Can a cloud travel all the way round the earth? Posted: 09 Jun 2018 12:20 PM PDT This was posed by my daughter and I don't know but we wondered if a cloud could travel all the way round the world and remain intact, even if it expands, shrinks, merges with other clouds or breaks off. Not really sure how you define a cloud and identify it but is it possible? [link] [comments]  |
| Does a video of an empty, stationary room have a smaller file size than a video of things moving? Posted: 09 Jun 2018 12:43 PM PDT |
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