why high-speed wind feels colder? |
- why high-speed wind feels colder?
- Is there a fundamental and consistent difference between fields that follow the inverse-square law and fields that follow the inverse-cube law?
- Did dinosaurs shed their skins in big patches like modern lizards and snakes?
- Can Lorentz transformations be written as a matrix transformation?
- Alpha centauri apparently has 3 suns orbiting each other. I understand how 2 objects can orbit without colliding, but how can 3 do that?
- Are the phases of the moon the same throughout the world?
- Do black holes cores emit photons that just can’t escape to the surface?
- Can a gas giant have a solid core?
- When you make a pinhole camera with a large hole, the resulting image becomes blurry. How do our eyes maintain a sharp image in the dark, when our pupils drastically expand?
- How are video games “ported” to other consoles and PC?
- I have an over the air TV antenna. Why do things like microwaves, air mattress pumps and trucks driving by mess with it?
- Why is it when people are paralyzed from a spinal injury, their internal organs (lungs, heart etc.) can still move?
- Is there a size limit to phagocytosis?
- Do cats have long term memories?
- For your lips, how do your cells know when to go from being regular skin cells to being lip cells? And then lip cells to mouth cells?
- Can you improve your visual acuity?
- A billiard ball colliding off a mirror loses momentum and thus energy. If a photon reflects off a mirror, does it lose momentum, energy, and thus shift to a higher wavelength?
| why high-speed wind feels colder? Posted: 09 May 2020 06:00 AM PDT |
| Posted: 09 May 2020 06:06 AM PDT Inverse-square: gravity, electrostatics, etc. Inverse-cube: magnetic [link] [comments]  |
| Did dinosaurs shed their skins in big patches like modern lizards and snakes? Posted: 08 May 2020 01:38 PM PDT |
| Can Lorentz transformations be written as a matrix transformation? Posted: 09 May 2020 07:33 AM PDT So I was looking at some videos online which show how a matrix transformation would look like from a vector perspective, and it reminded me of another video which showed how a coordinate system would transform under the Lorentz transformations. So my question is can this be done? If so then wouldn't it be more compact to write it that way? [link] [comments]  |
| Posted: 08 May 2020 05:34 PM PDT |
| Are the phases of the moon the same throughout the world? Posted: 08 May 2020 09:45 PM PDT Are the phases of the moon the same throughput the world? For example if there is a full moon where I live will there also be a full moon the same night on the other side of the world? [link] [comments]  |
| Do black holes cores emit photons that just can’t escape to the surface? Posted: 08 May 2020 06:34 PM PDT |
| Can a gas giant have a solid core? Posted: 09 May 2020 03:43 AM PDT Could the core of a gas giant be solid like a rocky planet? Could someone theoretically "walk" on it if they had a space suit that kept them from getting obliterated (for argument's sake)? [link] [comments]  |
| Posted: 08 May 2020 07:06 PM PDT |
| How are video games “ported” to other consoles and PC? Posted: 08 May 2020 02:55 PM PDT When a video game is "ported" from one system to another, say PC to Playstation, how difficult is this process? Is the entire game rewritten in the code that each system reads? Or does a PlayStation interpret the same kind of programs/code that a PC interprets? [link] [comments]  |
| Posted: 08 May 2020 07:03 PM PDT I've been living with my mama these past two months and she has one of those antennas. Wondering how these things affect them and if we can do anything to help with it. Sorry if I picked the wrong flair, but I made my best guess. [link] [comments]  |
| Posted: 08 May 2020 06:40 PM PDT It is not uncommon to hear someone was paralyzed from a spine injury, so is it possible for your essential organs(like the heart) to also be paralyzed? [link] [comments]  |
| Is there a size limit to phagocytosis? Posted: 08 May 2020 05:51 PM PDT My understanding is that antigen presenting cells phagocytosis a pathogen and are leftover with antigens. What if it's a big parasite or cancer cell thats too big how do they get the antigens to present to start a adaptive response. [link] [comments]  |
| Do cats have long term memories? Posted: 08 May 2020 10:04 AM PDT I'm wondering what we know about the ability of our feline friends to remember things long term. In particular, do cats remember events, people, other cats from years past? I understand that if kittens are separated at the normal time (about three months of age) they tend to forget their litter mates and don't respond in any particular way if the meet as older cats, but once they're adults does that change? Say if you have two cats for several years, and one leaves or dies, does the other one tend to remember the lost one long term or do the memories fade after a period of time. So I guess my question is if cat's form long term event memory is comparable to ours or not. [link] [comments]  |
| Posted: 08 May 2020 09:43 AM PDT Like going from your chin and working up, you have skin cells. Then all of the sudden it's your lip. Is there a hard line where cells stop being skin cells and start being lip cells? Are there some 50/50 cells that are part lip and part chin as the skin moves from being chin skin to lip skin? [link] [comments]  |
| Can you improve your visual acuity? Posted: 08 May 2020 12:06 PM PDT Hello, I am a bit lost in learning about eyes and glasses. First, I'm farsightness and astigmatism. My glasses prescription is: Right Eye: +3.50 Sphere - -0.75 Cylinder - 166 Axis Left Eye: +4.00 Sphere - -1.50 Cylinder - 170 Axis The plus sphere corrects farsightness only and cylinder/axis corrects astigmatism, right? Now, my visual acuity for both my eyes are around 20/70. For a distance of 1.30m between my 30 inches TV computer (1080p) and my eyes, I have difficulty reading characters less than 20-25 font size depending of the font and contrast. It is unfortunate especially when playing some games that involves a lot of dialogue or and text. I have Usher Syndrome which includes Retinis Pigmentosa, I can see fine in my central vision and some parts of my peripheral vision. It is also why if I get closer to my screen, I will be able to read small characters but won't be able to see the whole screen because of my poor peripheral vision. Now, my questions are: Can you possibly have 20/20 while wearing farsightness/astigmatism glasses? I just noticed that I unconsciously strain my eyes almost all the times while wearing glasses and when I realized about it, I try to fully relax my eyes and noticed that the focus became 20% blur especially on the near. (Less bluer than when taking off glasses of course) It doesn't even give me headache or anything. Is this a bad sign, does that means, I must get a new prescription? From what I understand, glasses prevents eyes strain at all. Could not wearing glasses that corrects farsightness (Just wearing glasses that corrects astigmatism) and try to not strain my eyes.(Seeing blur all the times) improve my visual acuity and making the focus less blur over time? (I considered about traveling without glasses, no near focus involved most of the time) And finally, I'm wondering if retinis pigmentosa does also affect visual acuity. Thanks! [link] [comments]  |
| Posted: 08 May 2020 10:15 AM PDT |
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