- I’ve been perusing Wikipedia pages on hurricanes after Michael and have found detailed accounts of hurricane development for storms back in the late 1800s. How were these accounts recorded and/or constructed?
- Carbon dioxide poisoning through plants?
- How does a zip file work?
- Do cuttlefish exhibit social traits which results in them acquiring colours/shapes unique to their local population, like a dialect?
- What is the "resolution" of our hearing?
- Potiental Energy in Gases? Chem/Phys
- Which part of the hurricane has the highest wind speed, is it closer to the eye? Or more towards the edge of the hurricane.
- What leads to the figure of trillions of elementary particles that pass through us every second?
- Did the proto versions of octopus and bird beaks look similar, or did they come from different looking structures that just happened to converge into a similar looking one?
- If light has no mass how is it affected by gravity?
- Even with all the technology we have today and all the current discoveries we make about climate change, what makes telling the weather accurately such a hard feat to accomplish?
- Do elementary particles have an event horizon?
- Why does it take energy to hold you arm up for extended periods of time, but a rigid object can stay standing with no energy input?
- What keeps your pants up?
- Why does our oxygen level control the colour of our atmosphere?
- How do scientist take pictures and videos of incredibly microscopic things?
- Do we know what criteria ants look for when creating a new hive? What determines hill size and shape?
- Why are thermoplastic polymers more easily recycled than thermosetting polymers?
- How can lightning strike the same spot in the same shape multiple times?
- What is the environmental impact of data storage?
- If you make a nuclear weapon with a small blast wave would it still produce a mushroom cloud ?
- How is energy conserved in wave interference?
| Posted: 11 Oct 2018 08:55 PM PDT |
| Carbon dioxide poisoning through plants? Posted: 12 Oct 2018 03:54 AM PDT Someone told me today that it is not safe to sleep in a room that has plants in it because they produce carbon dioxide at night. Is it possible to suffer long-term damages from this? [link] [comments]  |
| Posted: 11 Oct 2018 02:14 PM PDT Like, how can there be a lot of data and then compressed and THEN decompressed again on another computer? [link] [comments]  |
| Posted: 11 Oct 2018 03:00 PM PDT |
| What is the "resolution" of our hearing? Posted: 11 Oct 2018 11:01 PM PDT Hello! I was thinking that if there is some background noise at some X dB, then what would the sound level have to be in order for a sound to be just barely audible? Also, does this limit depend on the frequency of the sound, and if so, in what way? [link] [comments]  |
| Potiental Energy in Gases? Chem/Phys Posted: 12 Oct 2018 05:53 AM PDT As seperation between particles increases, potiental energy increases-this doesnt make sense to me-how is a gas all kinetic energy then? From what I understand-as material is heated up, particles move further-increasing the total potential energy b/c intermolecular bonds are broken [link] [comments]  |
| Posted: 11 Oct 2018 09:12 PM PDT |
| What leads to the figure of trillions of elementary particles that pass through us every second? Posted: 11 Oct 2018 01:16 PM PDT One square centimeter of mass observed on Earth is ghosted by 64 billion neutrinos a second. How do we conclude from a neutrino detector that observes about 30 neutrinos a day, figure to trillions that pass through us every second? [link] [comments]  |
| Posted: 11 Oct 2018 07:04 PM PDT Is this example of convergent evolution a result of different structures becoming similar? Did the proto bird and the proto octopus have completely different ways of eating than they do now? [link] [comments]  |
| If light has no mass how is it affected by gravity? Posted: 12 Oct 2018 01:57 AM PDT For example how can light not escape a black hole even though it has no mass [link] [comments]  |
| Posted: 11 Oct 2018 06:04 PM PDT |
| Do elementary particles have an event horizon? Posted: 11 Oct 2018 03:36 PM PDT Elementary particles are defined as infinitely small points in quantum field theory. If particles are infinitely small, and those particles have mass, like an up quark for instance, then why don't they collapse into black holes? All of their mass lies within their schwarzschild radius. Is it because the up quark's electric charge spreads the energy of the particle over a larger amount of space, thusly making some of the particles mass lie outside the schwarzschild radius? If that is why then why do particles without charge not have event horizons? I'm not really sure if the possible solutions/problems made any sense, but weather or not particles have event horizons interests me and I would appreciate it if someone could direct me to somewhere that could explain it, thanks. [link] [comments]  |
| Posted: 11 Oct 2018 07:18 PM PDT |
| Posted: 11 Oct 2018 08:29 PM PDT I'm interested in the math that's involved. My limited background in physics and engineering isn't enough for me to understand how. A free body diagram of the problem with my knowledge doesn't add up. What exactly is the physics involved? Assuming no belt involved. [link] [comments]  |
| Why does our oxygen level control the colour of our atmosphere? Posted: 11 Oct 2018 12:22 PM PDT Our oxygen level is at 210,000ppm. This makes our atmosphere blue. If we had less oxygen, our atmosphere would be red. If we had more oxygen , our atmosphere would be yellow. Why? [link] [comments]  |
| How do scientist take pictures and videos of incredibly microscopic things? Posted: 11 Oct 2018 02:10 PM PDT I was going through the Nikon Small World competition and was baffled by how scientist were able to produce their videos. Thing first place video was of a zebrafish embryo growing its elaborate sensory nervous system [link] [comments]  |
| Posted: 11 Oct 2018 11:43 AM PDT Also, how many hills does one hive normally have? Does destroying one have any long term effects? [link] [comments]  |
| Why are thermoplastic polymers more easily recycled than thermosetting polymers? Posted: 11 Oct 2018 02:11 PM PDT I've read that thermoplastics can be recycled but their properties degrade in the process (why?) Thermosettings are hard to recycle but I don't get exactly why? [link] [comments]  |
| How can lightning strike the same spot in the same shape multiple times? Posted: 11 Oct 2018 08:06 PM PDT Just from observing it seems to me like lightning strikes are chaotic and random (in shape and size) and it bewilders me that lightning can form the exact same shape more than once. I guess what I'm trying to ask is what are the environmental factors that determine the size and shape of a lightning strike and how can it possibly be duplicated?example video (13 seconds in) [link] [comments]  |
| What is the environmental impact of data storage? Posted: 11 Oct 2018 07:33 AM PDT With so many people taking many, many awful photographs in an attempt to get that perfect Instagram shot (among many other banal reasons for taking ao many photos)… is there any environmental impact from the huge amount of data that humans upload to servers every single day? [link] [comments]  |
| If you make a nuclear weapon with a small blast wave would it still produce a mushroom cloud ? Posted: 11 Oct 2018 11:33 AM PDT |
| How is energy conserved in wave interference? Posted: 11 Oct 2018 12:28 PM PDT Whilst reading a pop science book on physics and metal, I got to wondering where does the energy go in destructive interference. It had a bit on this in the appendix, which mentioned: A) you have to consider the energy globally for energy conservation to apply. Fair enough i understand this But that doesn't explain what if the sources are as close as possible to one another. B) The oscillators will be coupled in such a way as to require more/less energy. The book referencing a 2014 paper on it, and says to quote:
But then consider this: EDIT: The lasers are just a placeholder here for an ideal wave restricted to a line. I am aware real lasers aren't like this. We set up 2 identical lasers, their beams have a power 'E', very far away from one another. And these have been placed in such a way as to be aligned and all that jazz so that the light they emit is aimed at the other perfectly (so that their beams will interfere). Now we get the lasers to fire simultaneously. The laser beams go forth and at the midpoint they meet. They interfere, so the wave has power of 4E (as power is proportional to the square of amplitude, which just adds linearly no?). But because the source of the laser beam is so far away, they are not yet causally connected. So how can they couple to explain the extra energy from 2 laser beams, if there is no non FTL way for the lasers source to communicate that they are on even? [link] [comments]  |
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