- If a non-Newtonian fluid, using Oobleck as an example, has a disproportionate amount of cornflower to water, so that it is essentially just a solid, does that mean that it is only the force of gravity, or less, required to cause it to be solid?
- As long as you also scaled all building materials proportionally, would it be possible to simply scale up a structure to a massive size while maintaining structural integrity?
- What are ants doing when they seem to be greeting each other when they pass by one another while going on different directions?
- Every non-covalent chemical interaction (charge-charge, dipole-dipole, charge-dipole, etc.) has a calculable energy associated with it except for H-bonding. Why is this?
- Is there a numerical pattern in the "charge" states of the fundamental forces?
- How much does wet sand expand when it freezes?
- How do "long exposure" shots work?
- Would it be possible for a body to have a moon that appears to orbit once per year?
- Is a cat’s purring a voluntary action or an involuntary reflex?
- Do our weekly routines affect patterns in weather?
- Can bugs (Insects or Arachnids) heal if they are injured?
- What does the AAM being completely positive mean in layman's terms?
- What are the measurements of Lagrange points and many stations can they accommodate?
- Does cetirizine make your immune system weaker or stronger at all?
- how much power does it take to run a UV light that is used to clean water?
- Why do we forget our dreams seconds after we wake up?
| Posted: 21 Jan 2020 02:03 AM PST |
| Posted: 20 Jan 2020 06:03 PM PST I always wonder why things are the size that they are, or if it would be possible for giant humans to exist. That's a complicated topic, so to simplify lets talk about buildings. Very simply: could you rebuild the empire state building, for example, to 200X as long as you used metal support beams that were 200x larger? Intuitively it would seem like it wouldnt work, but I'm not even sure why I would think that. It seems like the atomic forces that keep things solid and from bending have limits, and that these limits would reach a breaking point at a certain scale. Thanks in advance! [link] [comments]  |
| Posted: 20 Jan 2020 01:32 PM PST |
| Posted: 20 Jan 2020 03:41 PM PST According to my biochem book, we know the energy associated with H-bonds is proportional to 1/r2, but we don't have an actual formula for it. However, we do have equations for energies associated with all other non-covalent interactions. For instance, charge-charge interactions have an energy of Q1 * Q2/(4pi * r * E0) where E0 is vacuum permittivity. What makes H-bonding so elusive? [link] [comments]  |
| Is there a numerical pattern in the "charge" states of the fundamental forces? Posted: 20 Jan 2020 06:43 PM PST I noticed an apparent pattern in the "charge" states of the fundamental forces which I have not heard described before. The four fundamental forces are gravity, electromagnetism, the strong nuclear force, and the weak nuclear force. As far as I understand it, gravity is only attractive. In that sense, all particles affected by gravity can only have one "charge", which is their mass, and their is only one sign for this, which is positive. Electromagnetic particles can have two charges, positive and negative, where opposites attract and likes repel. And for the strong force, there are three "color charges" of red, green, and blue, which add up to white for a stable particle. (Although there can also be anti-colors for the anti-particles?). So given my simplistic understanding, the apparent pattern is: for gravity, the charge states = 1; for electromagnetism, the charge states =2; and for the strong force, the charge states =3. Perhaps the number of charge states is related to the degrees of freedom for types of interactions described by that force. My questions are: [link] [comments]  |
| How much does wet sand expand when it freezes? Posted: 20 Jan 2020 12:12 PM PST I know water expands by about 9% when it freezes, but how much would wet sand expand on freezing? Also, would the absorbency be taken into account? [link] [comments]  |
| How do "long exposure" shots work? Posted: 20 Jan 2020 11:53 AM PST Like this or this. I know what they did but how do cameras manage to ignore the dark parts (or whatever they're doing)? How does this long exposure thing work? Also, is the same technique used for this? If yes, how do people manage to have their camera always pointing in the same direction in order to not cause any lines? [link] [comments]  |
| Would it be possible for a body to have a moon that appears to orbit once per year? Posted: 20 Jan 2020 12:03 PM PST There's a fantasy world in pop culture (specifically Critical Role's Exandria) which has two moons. One is basically analogous to our moon, but the other is a reddish moon that appears much smaller and waxes and wanes over the course of a year. Now, I'm not a physicist but it occurred to me that if a moon orbited a planet with the exact same duration as the planet's orbit around it's star, then the moon would appear to be locked in the same phase, right? If so, what sort of astronomical phenomena could explain a "moon" that behave in such a way (ie, a small round body that waxes and wanes over a year)? I'm spitballing here, but could it be a relatively close super-jupiter? Or is it just something that needs to be chalked up to unrealistic fantasy cosmology? [link] [comments]  |
| Is a cat’s purring a voluntary action or an involuntary reflex? Posted: 20 Jan 2020 04:20 AM PST |
| Do our weekly routines affect patterns in weather? Posted: 20 Jan 2020 10:45 AM PST I've begun to notice over the years that during the Winter that patterns arise around when it rains based on a week. For example, we don't get much rain here except in the winter, I've noticed that if it rains on a particular day of the week, there is a good chance 1 week from then it will rain again. Given that most people base their routines around a week, I wondered if our activities were causing this. Have these been purely coincidental, is there another explanation for these weekly patterns, or is this human caused? [link] [comments]  |
| Can bugs (Insects or Arachnids) heal if they are injured? Posted: 19 Jan 2020 09:39 PM PST |
| What does the AAM being completely positive mean in layman's terms? Posted: 20 Jan 2020 06:59 AM PST Today I've been reading a lot on the polar cells and it appears that today, the AAM is completely positive. Source: https://twitter.com/gensiniwx/status/1219077898897850368 and his dataset is here: https://atlas.niu.edu/gwo/ Apparently this is hasn't happened in as long as the data-set goes back. What does this mean in layman's terms? [link] [comments]  |
| What are the measurements of Lagrange points and many stations can they accommodate? Posted: 20 Jan 2020 05:51 AM PST |
| Does cetirizine make your immune system weaker or stronger at all? Posted: 20 Jan 2020 05:40 AM PST Does it affect your immune system at all when you take allergy relief? Does it make you weaker or stronger? [link] [comments]  |
| how much power does it take to run a UV light that is used to clean water? Posted: 20 Jan 2020 05:25 AM PST i have looked for this a few times in the past but not found anything i could understand that is in simple KW/H. any basic info on the power of UV lights would be apprciated, anything that links increasing size to power used would be extra appreciated. [link] [comments]  |
| Why do we forget our dreams seconds after we wake up? Posted: 19 Jan 2020 02:53 PM PST After we wake up every few seconds that go by we forget more and more of the dream. And why does it take so much effort to try and remember just small parts of them? Why can't we fully remember all of dreams? [link] [comments]  |
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