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Tuesday, February 1, 2022

COVID/Flu transmission: Is "don't touch your face" just code for "don't touch mucous membranes" or is there more to it?

COVID/Flu transmission: Is "don't touch your face" just code for "don't touch mucous membranes" or is there more to it?


COVID/Flu transmission: Is "don't touch your face" just code for "don't touch mucous membranes" or is there more to it?

Posted: 01 Feb 2022 02:40 AM PST

Much of the public health messaging I see around COVID, Flu, and other common sicknesses emphasizes not touching your face with dirty hands. When I hear that, I hear "don't touch your eyes, the inside of your nose, or your mouth"/your mucous membranes. Is this right or is your cheek genuinely a dangerous place to touch and if so, why? Is there some way that things move from your cheek to your eye easily? Is your cheek significantly riskier than touching say, your shoulder?

I understand that we now know that formite transmission is not the dominant mode of transmission for COVID (seems to be quite rare), but for other similar sicknesses, I still have this question.

submitted by /u/makeasnek
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Is it possible to "lip read" in every language? Are some languages easier to lip read than others? Is there a language that is impossible (or just really hard) to read lips?

Posted: 01 Feb 2022 07:11 AM PST

Do our handwritings have "accents" similar to regional/national accents?

Posted: 31 Jan 2022 10:14 PM PST

Are there actual wild horses in the Americas or are they all feral domesticated horses?

Posted: 01 Feb 2022 06:38 AM PST

Has anyone ever brought actual wild horses to the Americas? And are there wild horses still in Asia? Or have they been bred out with domesticated horses to the point that all the horses in the world are basically domesticated?

submitted by /u/Flopsey
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Why don't single prop aircraft continuously roll?

Posted: 01 Feb 2022 07:24 AM PST

Helicopters have tail rotors to balance the force generated by the main rotor, without which they'd keep spinning. But why don't this phenomenon affect single prop aircrafts like ww2 fighters? Shouldn't they be continuously rolling?

Another side question, since the tail rotor can be used to spin the helicopter right or left, how do helicopters without one like KA-50 do that?

submitted by /u/ChikeMonke
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Why are submarines and torpedoes blunt instead of being pointy?

Posted: 31 Jan 2022 06:30 AM PST

Most aircraft have pointy nose to be reduce drag and some aren't because they need to see the ground easily. But since a submarine or torpedo doesn't need to see then why aren't they pointy? Also ww2 era subs had sharo fronts.

submitted by /u/Steve1924
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Will patients in a clinical mRNA HIV vaccine trial show up as HIV positive in testing?

Posted: 01 Feb 2022 12:04 PM PST

First patients vaccinated in clinical trial of HIV experimental vaccine that uses Moderna's mRNA technology

https://edition.cnn.com/2022/01/31/health/moderna-mrna-hiv-vaccine/index.html

submitted by /u/Environmental_Dream5
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To what extent do most cultures recognize the same specific emotions?

Posted: 31 Jan 2022 09:57 PM PST

Some cultures only have words for red, white, and black, while other cultures have words for red, orange, yellow, etc.—does the same hold for emotions?

Put another way: in primary schools, there are posters with cartoon faces caricaturing important emotions, but would an analogous poster on the other side of the world be likely to have the same categorization?

submitted by /u/wintergreen_plaza
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Why is cancer so much more prevalent in men?

Posted: 01 Feb 2022 09:36 AM PST

"The cancer mortality rate is higher among men than women (189.5 per 100,000 men and 135.7 per 100,000 women). When comparing groups based on race/ethnicity and sex, cancer mortality is highest in African American men (227.3 per 100,000) and lowest in Asian/Pacific Islander women (85.6 per 100,000)."

https://www.cancer.gov/about-cancer/understanding/statistics#:~:text=The%20cancer%20mortality%20rate%20is,women%20(85.6%20per%20100%2C000)).

submitted by /u/ironmagnesiumzinc
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Pfizer has said the immune response in kids aged 2-5 is "less robust" than with younger kids. Can someone who has seen and understands the data explain what it shows, and what that means from a practical standpoint?

Posted: 01 Feb 2022 08:56 AM PST

I understand what a less robust immune response means, but I haven't seen an explanation or breakdown of what the actual data shows we can expect the level / type of protection to actually be. Will it have any benefit for kids in this age range, or is it simply priming the kids for the possible effectiveness of a booster when it becomes available? Do they show a reduction in illness / hospitalization / transmission?

"Less robust" is not very clear!

Thanks so much!

submitted by /u/hoyfkd
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In Interstellar would the ship appear to be heading towards Miller's Planet for years or does time only begin to slow down once they have begun their descent into the planet's atmosphere?

Posted: 31 Jan 2022 09:51 PM PST

Since they spend 23 earth years on Miller's Planet what would it look like to Romilly who was still on The Endurance? Would he still see the ship in space heading towards the planet for years or would he not be able to see them?

submitted by /u/__Faded__
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Why is diabetes so prevalent in the Indian subcontinent since the last 50 years or so?

Posted: 31 Jan 2022 08:44 AM PST

Is hyperbaric oxygen possible on a planetary level?

Posted: 01 Feb 2022 07:05 AM PST

Pressurized oxygen on a planetary level. Is that possible?

submitted by /u/megamindwriter
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Would it be possible to link a telescope on Earth with one on Mars to see farther and more clearly the same way that telescopes in different locations on Earth can be linked?

Posted: 31 Jan 2022 09:08 PM PST

Does this indicate positive (effective) covid vaccine results in under 24 month olds?

Posted: 01 Feb 2022 03:17 PM PST

https://www.pfizer.com/news/press-release/press-release-detail/pfizer-and-biontech-provide-update-ongoing-studies-covid-19

If you scroll down a bit to where they discuss non-inferiority. I mean 'effective' in terms laypeople mean it, in case there's a medicine specific usage that I might otherwise imply.

Thank you

submitted by /u/careena_who
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What *exactly* do we mean when we say that a nucleus is 'stable'?

Posted: 01 Feb 2022 02:51 PM PST

I am trying to reconcile the following statements together that I have gleaned:

1) Thanks to quantum effects, any interaction or process that is energetically favorable, must happen with nonzero probability due to the inherent uncertainty in the universe (i.e. Heisenberg)

2) Based on the binding energy of nuclei, the most energetically favorable nucleus is that of Iron-56, as it has the strongest binding energy.

3) Despite those two statements, many other nuclei are (colloquially) listed as 'stable', such as Carbon-12 or Oxygen-16, despite not being as energetically favorable as the aforementioned Iron nucleus.

Would I be correct to state that stability, as is generally used, implies stability over only a subset of potential quantum interactions? If so, how do nuclear physicists define 'stability'; over what subset of quantum interactions is stability being considered?

submitted by /u/RiaSkies
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Can coronavirus survive on banknotes and infect people who use them ?

Posted: 31 Jan 2022 02:41 AM PST

Do planet's rings (like Saturn, Jupiter, Neptune and Uranus) look like striking stripes due to long exposure photography? Or would the rings look exactly like that in real time?

Posted: 01 Feb 2022 12:30 AM PST

Hello there scientific reddit community. :)

There was something bothering me while I was diving into the beautiful images Voyager 1 took. You see, planets like Saturn have these amazing looking rings. They are always shown as these beautiful striking "solid" elliptic planes. However, the rings are comprised of rocks and ice.

Therefore, I was wondering. Do the rings look like that in pictures because of long exposure? Or do the objects in the rings travel so fast that they are constantly emitting light?

In other words; what would the rings look like in real time; if you would observe them directly? And why would they be observed as such?

I tried my way to Google myself to the answer to this particular question; but I failed to find a clear answer.

Looking forward to your insights. Thank you!

submitted by /u/Doctor_Philly
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Why do rectal veins bypass the liver?

Posted: 01 Feb 2022 01:04 AM PST

Apparently that's why suppositories work, but how come the veins from the dirtiest place in the body skip the cleaning organ?

submitted by /u/Western_Cockroach_20
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When will we get the first pictures from the James Webb telescope?

Posted: 31 Jan 2022 10:48 PM PST

Do whales or other ocean dwelling mammals get colds or flus?

Posted: 31 Jan 2022 01:40 PM PST

Why doesn’t electric resonance imaging/ nuclear electric resonance exist/work?

Posted: 31 Jan 2022 06:14 PM PST

Magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) are both powerful medical and biochemical tools. From what I understand both rely on the magnetic spin properties of particles, can a similar principle work with the electric charge inherent in particles? Why/why not?

submitted by /u/Duck3825
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How are vaccines tested for children?

Posted: 01 Feb 2022 01:56 PM PST

Just reading about Pfizer applying to have its Covid vaccine eligible for children, and I'm wondering what drug trials look like for children. It seems like there are ethical implications. How are these drug trials run? How are children selected?

submitted by /u/slizzbucket
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Assuming all the eyelets are used with the traditional method as well, how does heel lock lacing (runner's loop) actually create the extra stability it has over traditional lacing method?

Posted: 31 Jan 2022 01:23 PM PST

Why do different viruses trigger different immune responses ?

Posted: 31 Jan 2022 02:46 AM PST

Hello fellow redditors,

My question is: Why do some viruses trigger extreme immune responses ?

It probably has something to do with the membrane proteins of the viruses and which cell receptors those membrane proteins of the virus can bind to, but why do viruses like Ebola trigger such an extreme immune response that certain messengers are released to such an extent that the vascular permeability skyrockets and internal bleedings occur ?

thanks for your answers in advance

submitted by /u/i-am-still-standing
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Sunday, January 30, 2022

How long do the more passive bodily functions usually continue after a person dies?

How long do the more passive bodily functions usually continue after a person dies?


How long do the more passive bodily functions usually continue after a person dies?

Posted: 30 Jan 2022 07:19 AM PST

So for example the enzymes in your stomach and intestines that digest food. I'm guessing that they don't need a constant supply of blood to keep doing what they're designed for, so if you somehow forced food into a recently deceased intestine would it still be broken down and digested? And does this just continue until the body lost enough temperature for the enzymes to denature?

And in a more general sense, how long is it after the heart stops that all these enzymes stop working and the body is 'completely' dead?

submitted by /u/Old_Proposal9572
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How do some things get absorbed through lung gas exchange (Nicotine) but others don't? (Tar)

Posted: 30 Jan 2022 07:19 AM PST

I'm essentially wondering how lung gas exchange works for substances other than air. Obviously anything besides air is going to be bad for the lungs but how? Does it leave a film like buildup? Is it permanent? How does vaping compare to regular air?

submitted by /u/CarlTheLime
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How are UV bulbs made "low ozone"?

Posted: 30 Jan 2022 07:43 AM PST

I've purchased several fluorescent type UV bulbs that operate at 253 nm. A person may purchase two versions of the same bulb, regular and "low ozone" bulbs. If the bulbs are at the same frequency, how do the manufacturers decrease the ozone produced? Is there a standard for "low ozone"? or is it just what they feel like?

submitted by /u/new-man2
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Why is human fat yellow while beef/pork fat is white?

Posted: 29 Jan 2022 07:20 PM PST

Disclaimer: I'm colourblind, so please forgive me if animal fat is indeed yellow

submitted by /u/Amraam120C
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Why don't we inject vaccines directly into lymph nodes?

Posted: 30 Jan 2022 09:32 AM PST

3 days ago I had my 2nd booster shot of COVID-19 vaccine.

Soreness in my left arm came almost immediately at the site of injection. However it was only until a day later that I started burning a fever and feeling an uncomfortable swelling in my left armpit.

True enough, I gathered that spike proteins produced through the vaccine were transported to the lymph nodes located in the armpit and the swelling is a merely a sign of WBCs being mass stimulated to fight the "infection".

So... Should injecting the vaccine directly into lymph nodes help to speed up the process of activating WBCs and in turn be a more efficient way to obtain immunity?

submitted by /u/SnowyArctic
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When laying a new undersea cable with a plow, how do they not accidentally dig up an old cable that needs to be crossed over?

Posted: 29 Jan 2022 09:32 PM PST

Here is an informative guide to undersea cable laying (Don't judge that it is quora). They mention that they bury the cables under the sea bed around a meter using a plow very similar to one on a farm. Looking at a cool interactive map of where cables are buried, they obviously criss cross at certain points. How does the plow avoid digging up other cables?

submitted by /u/stevenette
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Could supermassive black holes form through star mergers?

Posted: 29 Jan 2022 08:07 PM PST

I know the universe isn't old enough for supermassive black holes to have formed from collapsed stars. I've heard hypotheses about quasi-stars and collapsing gas clouds, but what about star mergers?

I was just thinking, what if there was a gravitationally unstable star cluster which resulted in dozens or hundreds of massive stars colliding and merging? I know that's how some astronomers think really massive stars like R136A1 are formed. But what if enough stars merged to collapse their cores into a black hole, and then more and more kept colliding with the new black hole? Could that have been how some supermassive black holes got their start? Or would this not work?

submitted by /u/spacenerd051099
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How does the body react to food after prolonged food deprivation. Will eating even a normal portion of food cause stomach aches or other adverse reactions?

Posted: 29 Jan 2022 08:20 PM PST

How does leprosy cause skin lesions?

Posted: 29 Jan 2022 03:21 PM PST

Lots of sites will say "leprosy causes skin issues/lesions" but never talk about how exactly it does that lol. There's lots of information on how it invades peripheral nerves and leads to loss of sensitivity etc. but not much on lesion pathways.

I'd assume that skin lesions result from an inflammatory immune response to M. leprae? Not too sure so any help would be appreciated.

submitted by /u/AaronEXL
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Do cold-blooded animals have body fat (subcutaneous fat)?

Posted: 29 Jan 2022 07:28 PM PST

I don't eat fish, let alone reptiles

submitted by /u/Amraam120C
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Is there any limit to how dense matter can be?

Is there any limit to how dense matter can be?


Is there any limit to how dense matter can be?

Posted: 29 Jan 2022 09:02 AM PST

Was watching a video about the Big Bang yesterday and they mentioned that in the beginning all the matter in the universe was packed into an unimaginably tiny space. Which got me wondering: is there any physical limit to how much matter can be packed into a small space?

Also, I tagged this "astronomy" as it seems like this would fall under the astrophysics category. Sorry if that's not the case.

submitted by /u/ApologeticKid
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Are the superheavy elements well-mixed in the galaxy? Are there "nuclear deserts" where one might find the heaviest things (tellurium) absent?

Posted: 29 Jan 2022 11:00 AM PST

Might not be the right sub but why are the first four hydrocarbon roots not greek roots?

Posted: 29 Jan 2022 08:49 AM PST

I've always wondered this but since I'm now taking organic chem I really just want to understand. It's kinda been driving me mad the past half hour.

Like why are the first four made up but the rest are Greek roots? Why not make them either all Greek or if the scientific community really wanted to differentiate hydrocarbons, all Latin (ok that would actually be worse IMO), like we use Greek roots 1-4 with non-hydrocarbons, and I' pretty sure Greek roots for 11-24, 21-24, etc. are used. Why are meth-, eth-, prop-, and but- the roots for 1-4, what's the logic behind it?

submitted by /u/LilJesuit
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Oat Milk bad for Reproductive Organs?

Posted: 28 Jan 2022 11:16 AM PST

Barista here! Just had a customer order a Pumpkin Spice Latte and when I said Oat milk was our nondairy option, he backed away and said "whether you know it or not, oat milk messes with your reproductive organs." I then spelled O-A-T to confirm and said, "well I drink it all day so that's great" He confirmed oat and walked away.
Apologies in advance if this isn't considered a science question.. I just drink a lot of oat milk and have never heard this/would like to know if there's any grounds for this claim.

submitted by /u/anonymoussarah
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Why did we used to use oil derricks without pump jacks?

Posted: 29 Jan 2022 05:00 PM PST

I've been researching oil extraction for the past few weeks and something has confused me. I've discovered that oil derricks are generally used for drilling oil wells, and pump jacks for actually extracting the oil. This makes sense to me.

However, I'm confused by some images I've seen of past drilling operations (and some present ones) like those in this article: https://99percentinvisible.org/article/hollywood-worthy-camouflage-uncovering-the-urban-oil-derricks-of-los-angeles/ how does simply having an oil derrick work? Also, particularly for the third image, why were there hundreds of oil derricks so densely packed together? Surely they'd just be extracting from the same oil field?

submitted by /u/SaltResearcher4
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Which animal species came the closest to going extinct and then successfully recovered?

Posted: 28 Jan 2022 07:29 AM PST

Based on what I could find, the species that came the closest to extinction is the Laysan Duck (Anas laysanensis) which reached an all-time-low population of 12 Individuals and then rebounded to several hundred according to the IUCN. I'm curious if there are any species that came closer to going extinct than this one.

submitted by /u/SunpaiTarku
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How can collisions between molecules in the gas-phase result in cooling i.e. "collisional cooling" when collisions are also used to activate and fragment molecules i.e. "collision-induced dissociation"?

Posted: 28 Jan 2022 04:14 AM PST

This seems contradicting to me. Can someone explain the difference between a scenario where collisional cooling dominates and a scenario where collisional activation dominates? My particular example is for peptide ions in a mass spectrometer in case different theories apply for different regimes.

submitted by /u/CL1N73N
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Why is sensitivity lower than specificity in COVID tests?

Posted: 28 Jan 2022 05:49 PM PST

My common sense assumes that it's much more important to make sure positives are identified accurately, since it's not as big a deal having a false positive isolated than a false negative running around the streets

submitted by /u/supernanzio
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What causes visual noise in low light conditions?

Posted: 28 Jan 2022 06:11 PM PST

It's something I've noticed in the past, but exclusively in the dark. Today I was sitting outside and the sun was setting. I noticed the appearance of what looked like visual noise on a camera in the darker areas of the sky and none on the lighter portion. The "dots" I guess I would call them were miniscule and there were far to many to pick one out and follow it. If I had to describe them I'd say it looked like a swarm of bugs from a decent distance away. I assume this is common, so I'm wondering what in either the eyes, or in the way the brain interprets their information causes it.

Edit: To be clear. I am NOT talking about a camera. This post is probably dead, but I just wanted to update incase anyone else sees. This is something that happens to me, seeing through MY eyes in exclusively low light/dark conditions. It does looks a lot like the noise through a camera. Even as I type this I can look to a dark part of the room and see the noise.

submitted by /u/iMakeGirlsCry
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Are there any animals that bait prey, by pretending to be prey (for their prey) themselves?

Posted: 28 Jan 2022 02:49 PM PST

I've tried googling the question, but I couldn't find any good answer (instead I got general answers regarding prey)

submitted by /u/lirannl
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How is a space telescope able to take pictures of very distant objects without blur?

Posted: 28 Jan 2022 05:40 PM PST

Take for instance the Hubble Space Telescope, we send it into LEO, and now we want Hubble to photograph something very distant 160 or however many degrees in the other direction. Now before I get to my question, we know that an object in space that has been acted upon by a force will continue in whichever way the force acted upon it. So we have hubble and now we order it to use its thrusters to maneuver into the direction of the distant object, now as it is approaching the stopping mark, it begins to counter thrust to come to a complete stop right? But there's my question, does it 100% come to a full stop? As in it is not even moving 0.000000.... m/s in any direction, and if thats not the case, wouldn't viewing insanely distant stars or any object become blurred due to even the tiniest of movements? Thank you in advance.

submitted by /u/AlphaTangoCheesecake
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Why does cholecystitis cause fever?

Posted: 28 Jan 2022 07:08 PM PST

If it is caused by stones building up in the cystic duct? Is it because bacteria builds up there after the blockage forms?

submitted by /u/Comfortable-Grand235
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Is there any difference in vision capabilities because of the color of our eyes?

Posted: 28 Jan 2022 12:18 PM PST

What ever happened to all the radiation that dispersed into the ocean after the Fukushima nuclear disaster?

Posted: 28 Jan 2022 12:35 PM PST

Did the levels dissipate to where they were no longer a concern or are we more or less just turning a blind eye to it?

submitted by /u/oldspicycheese
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Do animals die of thirst in the winter?

Posted: 28 Jan 2022 04:06 PM PST

If wrong subreddit, please send me to the right one.

I know ice melts, but if it doesn't melt fast enough, what happens? Do they find a new source? Do they have a way to melt the ice? Are they winter camels?

submitted by /u/TheLastBiteofCake
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What happens to the intron after a mature RNAs is produced?

Posted: 28 Jan 2022 11:12 AM PST

While searching how protein is produced by the cell i found out that RNA needs to mature before becoming RNAs and that it is made with spliced parts from transcription called exons that got connected to create an RNAs sequence

BUT, when i search what happens to the intron after a mature RNAs is produced i get different results.

I want to know what happens to the introns and how are the tRNA,rRNA, and pRNA made

submitted by /u/AzizAuditore
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Why do we have regional accents and why is it so hard to mimic another accent?

Posted: 28 Jan 2022 05:31 PM PST

In linguistics, how do regional accents develop, and why do we find it so difficult to mimic?

submitted by /u/taflad
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Any reason for Greece’s one of a kind geographic shape, and why the coastline is so particularly unique from a geological standpoint?

Posted: 27 Jan 2022 02:51 PM PST

How does a solar panel produce useful current?

Posted: 27 Jan 2022 01:21 PM PST

I don't understand how the depletion region can preferentially/unidirectionally pass electrons. It seems to violate the laws of thermodynamics to take random motion of the freed electrons and turn it into useful energy. It's basically Maxwell's Demon. Why can't we just put a bunch of PN junctions between metals to preferentially send those free electrons in one direction for infinite energy when it obviously works in a solar panel?

I actually got a bloody masters degree in solar technology so I can do all the calculations and design my own cells but how this critical part works is beyond me.

submitted by /u/Ndvorsky
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Thursday, January 27, 2022

When my acoustic guitar vibrates loudly after I sneeze, what exactly is happening?

When my acoustic guitar vibrates loudly after I sneeze, what exactly is happening?


When my acoustic guitar vibrates loudly after I sneeze, what exactly is happening?

Posted: 27 Jan 2022 06:54 PM PST

How does the body 'learn' from immunosuppressants to keep an autoimmune condition in remission?

Posted: 27 Jan 2022 08:37 AM PST

For autoimmune conditions where the treatment is immunosuppresants to get the condition into remission, it would seem intuitive that the moment you stop taking the immunosuppresants the condition would return/flare up. But in some cases remission is maintained even when you stop taking the immunosuppresants, which seems counter-intuitive. How does the body 'learn' to stay in remission without the drugs?

submitted by /u/Habanero15
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Does cellular communication use radio waves or microwaves?

Posted: 27 Jan 2022 11:15 AM PST

May be a stupid question for a subreddit way more scientific than I could ever be, but I'm having trouble finding defined ranges for both radiowaves and microwaves and so I'm also having trouble categorizing cellular communication into either one. I was always pretty sure it was radio but now I'm having doubts from what I'm seeing on the internet.

(I sort of guessed the flair, my bad if it is incorrect)

submitted by /u/Dudeguygamer
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If you get animal blood on fabric, is simply washing the item enough to mitigate disease risk?

Posted: 27 Jan 2022 01:47 PM PST

If you're helping an injured animal (e.g. bird hit a window) and you get blood on a towel or other item, is it enough to just wash the item in a standard cycle? I know human blood is considered a significant biohazard but not familiar with animal blood.

Asking because I've got a towel with bird blood on it that I just threw in the washing machine (no bleach on hand).

submitted by /u/burf
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Why do severe injuries often not hurt the instant they happen?

Posted: 26 Jan 2022 11:46 PM PST

When I touch something unbearably hot, I feel the pain almost instantly. I've heard many people who have been shot often don't realize it. I understand that adrenaline masks pain, but how quickly does it take to kick in?

Another example, I smashed my face into the ground (unintentionally) and broke my nose some months ago. The initial impact was painless; I obviously could tell I hit a hard surface, but the only sensation I experienced was the pressure of the ground. Was adrenaline released as I was panicking and falling? Did my body not have enough time to process the pain? I've heard it takes a couple of minutes for adrenaline to be in effect, but of course I'm not an expert.

I'm not sure of this is caused by something else, but I'd love to understand it better.

submitted by /u/Thrackerzod_11
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What does the 'm' refer to in 178m2Hf?

Posted: 27 Jan 2022 10:14 AM PST

I came across the "Hafnium controversy" wikipedia page and am very confused to what 178m2 refers too. My understanding is that 178Hf would be a hafnium nucleus with 178 nucleons, so what on earth does the 'm2' part mean? Does it just mean it's in an excited state or something?

https://en.wikipedia.org/wiki/Hafnium_controversy

submitted by /u/Routine_Midnight_363
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Why didn't whole households die of consumption?

Posted: 26 Jan 2022 11:53 PM PST

In movies and old books, people are often shown with this very long, protracted illness. They're always coughing, and then one day they cough into a white handkerchief and it's stained with blood and you know they're a goner.

But you never see the people they live with get sick or even appear to be concerned about contracting the illness, even though they share the same house and are always in proximity with the sick person. Why is this? And how did the sick person contract it to begin with if it's apparently non-transmissible?

submitted by /u/WartimeHotTot
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Do screens use more energy depending on the color being displayed?

Posted: 26 Jan 2022 02:46 PM PST

For example, will a cell phone displaying a solid white background die more quickly than one with a solid black background?

submitted by /u/nickc43
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How is it possible for turtles (and any other creatures underwater) to yawn underwater?

Posted: 26 Jan 2022 07:36 PM PST

How does it actually work?

submitted by /u/marcoazeem
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Do other species yawn, and is imitative (dogs maybe), for the same reasons as humans (tired), or something else?

Posted: 26 Jan 2022 07:18 PM PST

When our adult teeth grow out, do the holes in which they were fill out? If yes, how and when?

Posted: 26 Jan 2022 03:04 PM PST