How are boundaries between colors defined? Are they a cultural/linguistic/anthropological phenomenon stricto sensu, or are there biological/neurological bases behind color definition? |
- How are boundaries between colors defined? Are they a cultural/linguistic/anthropological phenomenon stricto sensu, or are there biological/neurological bases behind color definition?
- I know everyone is excited about the Webb telescope, but what is going on with the 6-pointed star artifacts?
- Why are infrared telescopes like the JWST critical for observing the early universe? If light from far away is being red-shifted, wouldn't the farthest light eventually be shifted into radio wavelengths making radio telescopes more useful?
- When you "feel" the sun beating down on you, is that some part of your body reacting to radiation rather than the normal sense of warmth carried via conduction or convection?
- With the JWST newly released images, I noticed that the glare of bright objects tend to have a “cross-stitch” pattern. What is this image artifact caused by?
- why do we hardly see dead birds (aside from roadkill) where do birds go to die?
- What does "Soft Metal" mean in a chemical context?
- Did I get rid of calcium chloride dessicant properly?
- How dangerous is a dental x-ray?
- Car collision physics - are there any differences between heavy trucks (SUVs) and regular ones safety-wise?
- Are smell/taste memories as fallible as memories of feelings and events?
- How is it insects can rub their 'eyes' without injuring them, but mammals/etc touching their eyes is damaging?
- Is there any notable speciation of pest species that reside in urban environments like pigeons, rats, and cockroaches between major cities, countries, or continents? Or does the movement of people, and the inadvertent transportation of individuals of these species, prevent speciation?
- What are the physiological processes in a woman's body responsible for inducing and performing the expulsion of a fetus during a miscarriage?
- Why aren't all galaxies randomly spread out and instead are clustered in these weird structures?
- Does getting tattooed affect your white blood cell count and things like erythrocyte/eosinophil?
- Why are galaxies galaxy sized?
- How are Coronavirus classification numbers created, and is there a universal system for all viruses?
- Are there any large terrestrial exoplanets with an accretion disk similar to Saturn's?
- If the JWST was pointed at the Sun, would it cook?
- Why do we get mold in other warm and moist areas but not in our armpits?
- When physicists or cosmologists say that there may be much more of the universe beyond our "cosmic horizon", how is that possible?
- Why does the jump in the rate of Uranium enrichment is so much faster going from 20% to 90% vs initially going to 3.5%?
- How do white blood cells replicate immunity between generations?
- Is there anywhere in the universe where energy exists without matter?
| Posted: 11 Jul 2022 11:42 PM PDT A friend and I were arguing about the color of a car. I said it was pink. He said it was purple. I'm not a native speaker of English, so I wondered if that had perhaps something to do with it - perhaps my mother tongue delimited pink and purple differently than English. But asking some Americans, I found out that actually the jury was split. This got me thinking... - Are some color boundaries fuzzier / more ambiguous than others? For instance, yellow might not be as contentious a color as others, but that is just my impression. - If some color boundaries are fuzzier than others, is that consistent across languages? For instance, is the boundary between green and blue always fuzzy? - Are there any biological bases for color definitions, anchored perhaps in color perception and processing? I realize that this question straddles many disciplines, so I flaired it with Psychology but it could as well have been linguistic, anthropological etc. [link] [comments] |
| Posted: 12 Jul 2022 08:47 AM PDT Follow-up question: why is this artifact not considered a serious issue? [link] [comments] |
| Posted: 11 Jul 2022 06:58 PM PDT |
| Posted: 11 Jul 2022 06:43 AM PDT |
| Posted: 12 Jul 2022 08:44 AM PDT Super excited with these fantastic images! But I am curious about this [link] [comments] |
| why do we hardly see dead birds (aside from roadkill) where do birds go to die? Posted: 11 Jul 2022 09:26 PM PDT |
| What does "Soft Metal" mean in a chemical context? Posted: 12 Jul 2022 08:28 AM PDT Was looking through some Safety Data sheets of a chemical cleaner, and noticed that it said "Contact with soft metals forms flammable chlorine gas" Surely "soft" can't be just about it's actual hardness, because gold, for example is very soft, but chemically non-reactive. So what is "Soft" meaning and what metals are "soft" [link] [comments] |
| Did I get rid of calcium chloride dessicant properly? Posted: 12 Jul 2022 08:45 AM PDT I accidentally spilled dessicant over my greens. As it's saturated calcium chloride I thought it'd be good to submerge and thoroughly rinse a couple of times to get rid of it. Now I've ran an ISO extract on it, it isn't fully solidifying like it normally would. Could this be leftover dessicant? Or could it be due to water/ISO that has refused to fully evaporate? [link] [comments] |
| How dangerous is a dental x-ray? Posted: 12 Jul 2022 08:51 AM PDT Hey guys, I am 19m. Today I went for a dental check-up. They did 3 dental x-rays on me. 2 on left cheek and 1 on the right. This is my frist time being exposed to a dental x-ray. Previously I have never had it done. I was wondering as to how dangerous is a dental x-ray and how bad can it's effects be for someone of my age. [link] [comments] |
| Posted: 12 Jul 2022 08:41 AM PDT Assuming there is a frontal collision of 2 cars, are there any differences in safety between heavy trucks and lighter cars? I mean, there are some claims that due to how rigid the reinforced frame in heavy vehicles is, one is more susceptible to organ damage due to how kinetic energy is transferred. In case of lighter ones, they are intentionally made in a way that makes the body and chassis "absorb" the energy in order to reduce the damage the crash inflicts on the passengers. I guess the outcome of a collision could rely on the differences in weight between the participants. TLDR: would a heavy vehicle be a better option safety wise? Or are there other factors in play? [link] [comments] |
| Are smell/taste memories as fallible as memories of feelings and events? Posted: 10 Jul 2022 03:17 PM PDT |
| Posted: 11 Jul 2022 04:01 PM PDT |
| Posted: 11 Jul 2022 02:57 PM PDT Likewise for invasive species like Asian carp, lionfish, and snakeheads, where transportation of these species is strictly controlled to prevent further damage, is there any notable speciation between the original native populations and the individuals that exist in the invasive range? [link] [comments] |
| Posted: 11 Jul 2022 05:43 AM PDT I understand an early miscarriage is often induced by a chromosomal abnormality, but how does the body know there is a chromosomal abnormality? And then how does the body proceed to expel the fetus? Is it just the fetus "falling out" or does the body intentionally and actively push out the fetus? If the latter, what are the physiological processes involved and how do they work? [link] [comments] |
| Why aren't all galaxies randomly spread out and instead are clustered in these weird structures? Posted: 11 Jul 2022 05:28 PM PDT I just saw new webb space telescope image and have outlined some of the patterns you can see right away. [link] [comments] |
| Does getting tattooed affect your white blood cell count and things like erythrocyte/eosinophil? Posted: 12 Jul 2022 12:57 AM PDT |
| Why are galaxies galaxy sized? Posted: 11 Jul 2022 04:35 PM PDT It seems that galaxies have a range of sizes that they come in why the galaxies arranged at that variety of sizes? Why cosmic bodies dont come as an even larger arrengement of matter than galaxies? [link] [comments] |
| How are Coronavirus classification numbers created, and is there a universal system for all viruses? Posted: 11 Jul 2022 07:38 AM PDT I see variants of coronavirus with labels like B.1.617.2 (Delta) and B.1.1.529 (Omicron), and then for Omicron there are subvariants like BA.1, BA.2, etc. Is this classification system unique to SARS-CoV-2? What does B mean? What does each number mean? Do they use this same classification system for other viruses? Is there a database of viruses with their classification numbers somewhere, along with basic factsheet information like R0 value? [link] [comments] |
| Are there any large terrestrial exoplanets with an accretion disk similar to Saturn's? Posted: 10 Jul 2022 07:42 AM PDT |
| If the JWST was pointed at the Sun, would it cook? Posted: 12 Jul 2022 08:44 AM PDT If so, how long would the space telescope need to be pointed at the sun before burning up? 1 minute, 1 hour, 1 day? [link] [comments] |
| Why do we get mold in other warm and moist areas but not in our armpits? Posted: 10 Jul 2022 12:14 PM PDT I was practicing taekwondo and I suddenly remembered that it's not our sweat that smells but the bacteria that consumes it does and we never have mold grow in our armpits similar to when food gets moldy, why is that? Is it simply because our sweat contains salt and water? Is it a different bacteria? Edit: Guys, I practice good hygiene like any reasonable human would. Quit being rude by telling me to "shower more often" or "clean your pits," I thought about it because of the sweat that was falling on my face and my mind wandered from there. [link] [comments] |
| Posted: 11 Jul 2022 09:39 AM PDT If I understand correctly, the further we peer into the cosmos, the further back in time we see. In that case, wouldn't the cosmic microwave background radiation and the first stars and galaxies then infer that the universe we observe is all there is? I can understand that there could be a causal horizon, given the perceived flatness of our universe. However, I am hoping that someone can help differentiate between the "firewall" of the CMB and the speculative universe beyond what we can see with telescopes. [link] [comments] |
| Posted: 11 Jul 2022 11:28 AM PDT |
| How do white blood cells replicate immunity between generations? Posted: 11 Jul 2022 07:10 AM PDT How does our immune system transfer genetic information about identified viruses and bacteria to future generations of white blood cells and other immune system functions? Does it get transferred, and if so, how can we develop a persistent immunity to something like polio? How are white blood cells recycled by the body? Does the genetic data coded by these WBCs get lost? It is my understanding that WBCs encode some of the genetic material it breaks down to help identify future threats, but WBCs don't live forever, so what happens to this captured genetic material? [link] [comments] |
| Is there anywhere in the universe where energy exists without matter? Posted: 11 Jul 2022 02:27 PM PDT Or in other words, does all the matter in the universe account for all the energy? [link] [comments] |
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