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Sunday, February 28, 2021

What percentage of genes are purely human?

What percentage of genes are purely human?


What percentage of genes are purely human?

Posted: 27 Feb 2021 04:58 PM PST

We share ≈96% of our genes with gorillas, ≈50% with bananas, so if we added all the specific shared genes what percentage is purely human?

submitted by /u/Dani3850
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How realistically viable are mrna vaccines in treating autoimmune disorders?

Posted: 27 Feb 2021 03:07 PM PST

What is the Yukawa potential calculating?

Posted: 28 Feb 2021 01:08 AM PST

The Yukawa potential seems to predict the strong interaction, the weak interaction AND the electromagnetic force. But that seems "overpowered"...

submitted by /u/MaxEin
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Have long-haulers or people suffering from chronic symptoms related to SARS-CoV-2 infection shown benefit from any vaccine?

Posted: 27 Feb 2021 06:27 PM PST

If a nursing mom receives the COVID vaccine, will protective antibodies be transferred to the baby via breastmilk, essentially helping to “immunize” the baby who can’t yet receive the vaccine?

Posted: 27 Feb 2021 10:00 AM PST

Is it possible to be exposed to COVID and develop antibodies (enough to have short term immunity) without ever having a high enough viral load to test positive?

Posted: 27 Feb 2021 09:55 AM PST

Why do real vaccines hurt more than placebo vaccines?

Posted: 27 Feb 2021 10:34 AM PST

The tl;dr is the title.

I'm in the J&J 2-shot COVID vaccine clinical trial. (It's double blinded, so I don't know whether I got the real vaccine or a control placebo.) I just got my second shot today. One of the things the nurses said, both times I got a shot, is that if my arm was sore right after the shot, it's more likely that it's the real vaccine.

It could be psychosomatic, of course, but I'm still curious, why does the shot hurt more when it's real? Is it just because the body's immune response is that fast? I figured the pain was a normal response to the skin being pierced and to having a shot, but if that's the case then both the real deal and the control would hurt the same amount. What in the real vaccine — either the way it's administered, or its contents — makes it more painful to receive?

submitted by /u/Reputable_Sorcerer
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How is the J&J COVID vaccine is manufactured is the "pseudo-virus" cannot reproduce, and what safeguards are in place against unwanted mutations?

Posted: 27 Feb 2021 10:20 AM PST

I'll start by saying I'm not anti-vaxxer and I'm looking forward to my turn to be immunized.

My understanding of how the J&J vaccine works is as follows - it's a "pseudo-virus" that infects our cells and instructs their membrane to produce spikes mimicking the COVID ones, thus teaching our immune system to recognize the virus. I also understand that it's safe, because this pseudo-virus cannot replicate. Now to my questions:

  1. If the pseudo-virus cannot reproduce, how is the vaccine manufactured?
  2. What safeguards are in place to prevent mutations that would allow replication?
submitted by /u/nonamenolastname
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What does IQ measure, and how accurate is it st measuring that thing?

Posted: 27 Feb 2021 01:23 AM PST

This seems to be something where people can't give a straight answer and nobody seems to agree. Some people seem to say it is a great measure of intelligence and good at predicting performace in intellectually demanding tasks, others say it is absolute bunk and doesn't measure anything useful. Both groups seem to claim the science is on their side. They can't both be right. Do what actually is the deal?

submitted by /u/supermax255
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What is the real efficacy of the Johnson & Johnson vaccine? Are there upper and lower bounds on it?

Posted: 27 Feb 2021 10:17 AM PST

The news articles I have read go to great lengths to say that you can't compare it to Moderna and Pfizer's vaccines due to the different ways they measured efficacy. I get that they don't want people to refuse one vaccine in favor of another, but I would like a science-based explanation, rather than what a journalist's second-hand interpretation.

submitted by /u/DelightfullyDivisive
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Why does atopy inversely correlate with severe covid outcome?

Posted: 26 Feb 2021 08:22 PM PST

Can someone explain why atopic conditions like eczema, food allergy, and allergic rhinitis correlate with milder Covid consequences? I am not a medical professional, so I don't understand how atopy would be protective. I would have expected that it would make someone more susceptible to a cytokine storm. Curious to understand why that is not so. Thanks!

submitted by /u/LavenderSmellsBlue
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Do non-human animals experience psychological biases like the Sunk Cost Fallacy?

Posted: 26 Feb 2021 03:33 PM PST

Most of the time I hear about it in humans. For example, "I prepaid for a Hulu sub this month, even though there's nothing I want to watch I should watch something because I paid for it."

Does this happen with other animals? Like with food storage? Are they caught "throwing good money at bad money" but in their own way?

submitted by /u/BlueSky1877
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Can Someone Walk Me Through The Stages of an MRI Scan?

Posted: 26 Feb 2021 12:53 PM PST

I understand generally how it works, that's not what I'm asking.
But I take an MRI regularly and the question I ALWAYS am curious about is: exactly what is going on during an MRI? It's obviously not just one scanning mechanism, so I want to know what is every single stage of an MRI? What are all the different 'scans' going on? There's fast ones, high-powered ones, rapid-fire ones, and all sorts of other types of scans. Is it a different phyiscal mechanism? What is the purpose of each?
I really am looking for a detailed breakdown of how it works, and if possible, a visual representation of each stage (like: does it go from one side to another, does something spin, are there two of one thing, etc).

Thank you in advance, I realise that's a lot to ask for

submitted by /u/Hardcore90skid
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Saturday, February 27, 2021

Questions about radon gas and cancer?

Questions about radon gas and cancer?


Questions about radon gas and cancer?

Posted: 27 Feb 2021 12:56 AM PST

Sorry for the long list. Once I started reading up about radon and cancer, more questions kept popping up. I'm hoping somebody here is in the know and can answer some!

  1. If radon is radioactive, and leaves radioactive material in your body, why does it mainly (only?) cause lung cancer?

  2. If radon is 8x heavier than air, and mostly accumulates in the basement, wouldn't that mean that radon is a non-issue for people living on higher levels?

  3. This map shows radon levels around the world. Why is radon so diverse across a small continent like Europe, yet wholly consistent across a massive country like Russia? Does it have to do with measuring limitations or architecture, or is the ground there weirdly uniform?

  4. If radon is the second leading cause of lung cancer after smoking, why doesn't the mapof worldwide lung cancer cases coincide with the map of most radon heavy countries? It seems to coincide wholly with countries that smoke heavily and nothing else. I base this one the fact that if you look at second chart, which is lung cancer incidence in females, the lung cancer cases in some countries like Russia, where smoking is much more prevalent among men, drop completely. Whereas lung cancer rates in scandinavia, far and away the most radon heavy place on earth, are not high to begin with.

  5. Realistically, how worried should I be living in an orange zone, or even a red zone?

submitted by /u/Vrindjes
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Can years long chronic depression IRREVERSIBLY "damage" the brain/ reduce or eliminate the ability to viscerally feel emotions?

Posted: 27 Feb 2021 06:19 AM PST

Not talking about alzheimer's or similar conditions, but particularly about emotional affect

submitted by /u/bilolfopdpins
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We all know that salt can lower the freezing point of water. Are there any chemicals that can raise the freezing point of water?

Posted: 26 Feb 2021 09:57 PM PST

What determines the color/hue when I’m blowing bubbles? The soap, size and surroundings are (roughly) the same yet some bubbles have a purple, yet other a yellow glow.

Posted: 27 Feb 2021 04:45 AM PST

How do sailboats work when the wind is blowing in the opposite direction of travel?

Posted: 26 Feb 2021 05:42 PM PST

Why are certain materials like parchment paper, aluminum foil, etc. not hot to the touch out of the oven while metal and glass are?

Posted: 26 Feb 2021 04:24 PM PST

Can we use mRNA or viral vectors vaccines technology to produce other types of proteins not related to immunity?

Posted: 26 Feb 2021 08:11 PM PST

Can we, in theory, use this technology as a delivery method to give instructions to our body to create other types of proteins and/or amino acids? Would it be possible to deliver said instructions to, for example, make the body create more collagen, actin, protein C, etc?

submitted by /u/Irvzzr
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How do springs continue to apply pressure over years?

Posted: 26 Feb 2021 10:12 AM PST

I repair classic record players, and I've always been amazed that the internal springs can still do their job, even on a 40 year old player. It always seems like they should be much more stretched out than they are, and while I have to replace or rejuvenate some, the majority still work perfectly. How is this possible?

submitted by /u/NoNazis
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How similar are SARS and COVID-19 (SARS-CoV and SARS-CoV-2, respectively), in the disease pathology/mechanisms?

Posted: 26 Feb 2021 08:43 AM PST

SARS-CoV-2 was the name chosen for the virus that causes the disease COVID-19.

Why was that name chosen? This naming makes it look like a sequel to SARS-CoV (2002). Assumingly, that means the viruses show genetic similarity.

But what about the disease? Do the viruses cause disease through exploitation of similar mechanisms in the body (similar enzymes/receptors)? I've heard the claim that SARS was a respiratory disease, while COVID-19 is a vascular disease. How accurate, or inaccurate, is that?

submitted by /u/Regenine
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How do diamond paintings work?

Posted: 26 Feb 2021 05:04 PM PST

You pull the plastic cover off a sticky surfaced painting and place rhinestones over certain areas to finish a "painting".

My questions are:

1) I'm assuming the sticky surface is a contact cement which quickly dried once the plastic rhinestone has been placed over it. Why does the adhesive only dry when it is mated with another surface?

2) referring to above, if the contract cement only dries when contacted with something, why didn't it dry with the protective clear plastic over it? Did it activate once this was removed, and how?

3) how long will the contact cement remain sticky once the plastic wrap is removed? What is the process on a molecular level of adhesive drying I'm air?

submitted by /u/Ok_Article_147
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Does sedement effect voltage and/or pH of water?

Posted: 26 Feb 2021 04:47 PM PST

if sediment is sitting at the bottom or suspended in water, will this effect the water's siemens count or pH in any way?

submitted by /u/gotcha_nose_xd
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Friday, February 26, 2021

Why do Giraffes only live for 25 years but Elephants live upto 70 years even though they both share similar diets, size and live in the same parts of the world?

Why do Giraffes only live for 25 years but Elephants live upto 70 years even though they both share similar diets, size and live in the same parts of the world?


Why do Giraffes only live for 25 years but Elephants live upto 70 years even though they both share similar diets, size and live in the same parts of the world?

Posted: 25 Feb 2021 10:44 AM PST

Does pregnancy really last a set amount of time? For humans it's 9 months, but how much leeway is there? Does nutrition, lifestyle and environment not have influence on the duration of pregnancy?

Posted: 26 Feb 2021 03:25 AM PST

Can a photon release a portion of its energy?

Posted: 26 Feb 2021 07:46 AM PST

So I have a basic understanding of light and it's duality and what not. But I was wondering when a photon hits an object and reflects off, say a mirror, does it impart some of its energy and move off or does a photon only ever release all its energy or else bounces off an object? Apologies if I have phrased this poorly, found it hard to articulate exactly what I was getting at

submitted by /u/CaughtDannie
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Why do young, healthy people have more intense vaccine reactogenicity but get less sick when they catch a virus?

Posted: 25 Feb 2021 09:13 AM PST

I've read that young, healthy people are more likely to experience side effects from the COVID vaccines because of a robust immune response. So why do young, healthy people experience fewer symptoms/less intense illness when exposed to an actual virus?

submitted by /u/firstofhername123
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Does regular use of SSRI’s impact overall serotonin or dopamine production?

Posted: 25 Feb 2021 07:22 PM PST

Are they searching for a single particle in the search for black matter or is it believed the answer to the unobservable majority of mass within the known universe has multiple solutions?

Posted: 26 Feb 2021 05:53 AM PST

Everytime I hear about black matter it sounds like they are talking about a single particle. I don't know the gist of it, but in my head it sounds more probable that the great unobservable mass consists out of a lot of different things we still can't observe. If we can only observe about 10% of the universe and this consists out of millions of things, it kind of would be crazy the other 90% would consist out of a single thing right? I understand black matter could be the stepping stone to finding out more, but I have no clue what the exact theories are on this. So that's why I'm asking here!

submitted by /u/The_Funkefizer
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How does the Sinovac Covid-19 vaccine have such wildly different efficacy rates around the world?

Posted: 25 Feb 2021 09:46 PM PST

One trial in Brazil shows an efficacy rate of %50.4, while Turkey reports %91.25 efficacy rate. Is it possible this was caused by local mutation? What are the factors at play here?

Bonus question: In both cases, protection against severe cases are reported to be around %90, not taking into account the South African and UK variants. I'm having trouble understanding the reasons behind how a vaccine that can't stop you from getting infected protect you against the severe form of the disease?

Thanks!

submitted by /u/shamanicbro
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What is actually going on with new COVID-19 variants and their mortality rate?

Posted: 26 Feb 2021 04:39 AM PST

There seems to be a new variant each week, which are being labelled as 'variants of concern'. I understand that they're usually related to the vaccination efforts and ensuring people will be protected against new variants, long enough for the vaccines to be tweaked when an inevitable, vaccine-resistant strain emerges.

I'm not worried about that, because each of these new variants don't seem to fully bypass any of the vaccines yet. What I am worried about is some variants being reported as more lethal, for example the UK and California ones.

I understand the news will use sensational headlines to catch people's attention, but shouldn't a virus start mutating to be less dangerous? And if this isn't the case for coronavirus, will there be a peak mortality rate or will it continue to climb?

submitted by /u/JokerJosh123
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Some of the most massive craters on the surface of the moon and elsewhere throughout the solar system seem relatively "shallow" considering how wide the craters are. What gives craters this wide and flat shape?

Posted: 25 Feb 2021 11:08 AM PST

Why are ceramics used for things like heat shielding?

Posted: 25 Feb 2021 04:20 PM PST

I was thinking about how ceramics are used in shielding and things like tiles on the Space a shuttle and realized that I don't know why they are so good at dissipating heat.

submitted by /u/IQLTD
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If a woman ovulated off the right ovary and had an early miscarriage, is she more likely to ovulate off the left ovary in the following cycle?

Posted: 25 Feb 2021 10:26 AM PST

Hey all! 👋 I have a question, I tried asking in some pregnancy related subs and got radio silence.

Basically: does it take some time for an ovary to recover after a chemical pregnancy? Thus making it more likely you will ovulate off the opposite side in the cycle following the loss?

So backstory as to how I started wondering... I'm 27 and started my cycle at 9. Since I was 13, I've been able to feel my ovulation (Mittelschmerz).

However it is almost always on my right side! I've also had two pregnancies with early scans that confirmed I had ovulated off the right side to conceive them.

In December I had a chemical pregnancy. In January I felt unable to confirm ovulation (I don't temp) because I did not feel that pain. I ended up with a positive test about a month after my chemical started.

Now I've had an 8 week scan on that pregnancy and the tech told me I ovulated off my LEFT!!! perhaps that explains why I didn't feel it?

Thoughts?

submitted by /u/kerruffle
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Could we detect gravitational waves as remnants of the Big Bang?

Posted: 25 Feb 2021 04:52 PM PST

Assuming gravitational waves exist as wave forms and assuming they move at the speed of light, shouldn't we be able to find the gravitational equivalent of cosmic background radiation from the Big Bang? It seems like there should be a "hum" in the universe, perhaps a red shift in background gravity. It would be like a stretching of the universe detectable in weak, long gravity waves.

submitted by /u/RancidHorseJizz
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What would be observed in the Large Hadron Collider to indicate that a new particle might exist, for example, a supersymmetric particle counterpart?

Posted: 25 Feb 2021 06:14 PM PST

How do airplane pilots control lift? Is there a way to vary the lift the wings generate, or do pilots have to slow down up or pitch down when cruising?

Posted: 25 Feb 2021 01:36 PM PST

Why are some antibiotics injected, some eaten, and some placed on the skin?

Posted: 25 Feb 2021 06:41 PM PST

I'm aware that some antibiotic creams exist and have used them before. But what differentiates between ingested antibiotics and injected antibiotics, both in their makeup and which situation calls for it?

submitted by /u/Accelerator231
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How can a candle make oxygen?

Posted: 25 Feb 2021 03:20 PM PST

I was watching a show on submarines and they mentioned a chlorate candle that when burned release oxygen in emergency situations. My whole like i've known candles / fire to oxidize or use up oxygen. How can this candle generate oxygen?

submitted by /u/fukwhutuheard
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What is the current scientific consensus on willpower? Do we really run out of it?

Posted: 25 Feb 2021 10:55 AM PST

How do we know the brightness of supernovae?

Posted: 25 Feb 2021 04:10 PM PST

In determining the expansion rate of the universe, we need to know distances, which are hard to directly measure. in order to figure out distances we use the power output of a light-emitting object called a standard candle and use the inverse square law to figure out the distance. but this requires knowing the power of the candle, and apparently we use supernovae as candles, but i don't know how we know what the power/brightness is.

submitted by /u/AyoDev
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How important is Covid vax second shot spacing?

Posted: 25 Feb 2021 03:53 PM PST

Moderna second shot is supposed to be four weeks after the first, and three weeks for Pfizer. I'm assuming this is arbitrary, just based on what they did during testing, and not because that spacing is critical, but I don't really know. What happens if you get the second shot earlier or later than the recommended spacing?

submitted by /u/TimeMovesOn99
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How did ancient people treat and prevent Anthrax?

Posted: 25 Feb 2021 09:22 AM PST

Anthrax is an old and deadly disease with the respiratory form being over 90 percent lethal. It also has great infectious capabilities and was hard to treat without antibiotics. Given this, how did our ancestors fight against anthrax? What did they use to treat it and how did they prevent it? (Before the invention of antibiotics and vaccines)

submitted by /u/Wild_Nightshade
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Does plasma have the ability to be positively charged?

Posted: 25 Feb 2021 03:06 PM PST

Can you make plasma positive? If so, how do you achieve this? Or is there no way we can with our current technology?

submitted by /u/SOG-JGJ
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How do we know how well dogs can smell?

Posted: 25 Feb 2021 06:43 AM PST

Just wondering how we scientists can measure that dogs have X times better smell than us

submitted by /u/PLS_stop_lying
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Thursday, February 25, 2021

Why do vaccines provide longer immunity from a virus than natural infection?

Why do vaccines provide longer immunity from a virus than natural infection?


Why do vaccines provide longer immunity from a virus than natural infection?

Posted: 24 Feb 2021 09:38 AM PST

I know that the antibodies released by the B cells in the secondary infection will be more specific to the deactivation of the virus for the vaccine compared to natural infection and other advantages like that. However, I couldn't find much when I was looking for the reason that vaccines provide longer immunity, I was only reading how in both cases there will be memory cells for secondary infection. Sources would be greatly appreciated.

submitted by /u/Awing9
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Is it possible to scale down a linear accelerator for it to fit into a spacecraft to power it by firing particles out of the other end?

Posted: 25 Feb 2021 12:39 AM PST

I was looking at methods of propulsion in space and I was wondering if this was possible.

submitted by /u/oh_lyraj
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Do we know the climate of Pangaea?

Posted: 24 Feb 2021 08:30 PM PST

I was wondering if we know the climate of the supercontinent Pangaea, and if we do know then how do we? I tried looking this up but all I got was weather for my town (probably because they both start with p) and the typical description of "Pangaea or Pangea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras." If anyone can answer this question, thank you!

submitted by /u/ILikeBoats01
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Is it a legitimate claim to say that random, erratic weather is a result of climate change?

Posted: 24 Feb 2021 09:57 PM PST

I'm just thinking how over the course of a couple weeks we have swung from very cold temperatures on the East Coast in US and now it feels like spring today. So I guess my question is asking if that sharp change could occur under regular weather patterns or is it so because of climate change.

submitted by /u/Gsticks
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Dumb question but, how is Caesium just chilling in the ocean after the Fukushima Daiichi disaster?

Posted: 24 Feb 2021 01:01 PM PST

I read about how Caesium-134 and 137 were found found in the ocean after the reactor disaster. But I thought Caesium will always react violently with water. So what is going on with that? Did it react with something else and won't switch? Sorry this is probably a dumb question

submitted by /u/germattack3
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What would happen if a fully vaccinated individual were to contract coronavirus? Would it just feel like a light cold for them or would they literally not get sick at all?

Posted: 24 Feb 2021 10:24 PM PST

What happens when the angular quantum number is greater than 3?

Posted: 24 Feb 2021 06:48 PM PST

I was learning about quantum numbers, and how the principle quantum number n determines l, the angular momentum quantum number. But when I'm looking at electron configuration for higher elements, it has values of n up 8. This would follow that there are values of l up to 7.

The problem is that I'm only taught up to 3 with the f-block. Can someone please explain this?

On a related note, what is the purpose of the magnetic quantum number? Does it determine which of the orbitals an electron is in within l? Why are some values of it negative and others positive?

Sorry if this is the wrong sub for this question. I just can't find any answers by googling.

submitted by /u/ThePlatinumDragon999
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What is the process for decontaminating sites where nuclear waste is present?

Posted: 24 Feb 2021 08:29 AM PST

Just wondering the main stages after a nuclear event both long term and after and if there is regulations for it Also any links to interesting videos on the subject

submitted by /u/plutonium_77
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Do nuclear submarines use the hydrogen they get from electrolysis or just dispose of it?

Posted: 24 Feb 2021 02:18 PM PST

Not 100% sure if this is the right flair, call me out if I'm wrong. I'm curious, since nuclear submarines get their O2 from the water surrounding them do they also use the hydrogen for power or even welding purposes? Or do they have other ways of disposing it?

Edit: For some reason I can only see some of the comments... responding is hard when I can't see the comment itself.

submitted by /u/Autistic_Lurker
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Virologists- can you please explain why there needs to be a different antibody test for COVID19 when you were vaccinated vs getting the virus from natural infection?

Posted: 24 Feb 2021 05:58 PM PST

Is Adenovirus "escape" from the lysosome into the cytosol species specific?

Posted: 24 Feb 2021 08:24 PM PST

I am wondering if human adenovirus was endocytosed/phagocytosed, by an amoeba (for example), would it still be capable of escaping the endosome into the cytosol of the amoeba?

I looked into the literature and all I can say is that nothing I read suggested that it isn't a generic process that could work on any endosome... but that is far from a satisfactory answer.

submitted by /u/Natolx
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Any connection between a shift in the earth's magnetic north pole and the southward Artic jet stream?

Posted: 24 Feb 2021 05:08 PM PST

Will a shift of the earth's magnetic north pole (from northern Canada to Siberia) affects the polar vortex, if any? Are we going to expect more frequent Artic jet streams pushing southward if so?

submitted by /u/0b53rv3r
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How can light speed up when passing from a dense to a less dense medium?

Posted: 24 Feb 2021 10:26 AM PST

I took a microscopy course recently and have a question related to Refraction.

So, I understand that light slows down when passing into a denser medium. This leads to the light being bend at the border of the two media. (Snell's Law of Refraction) This still makes sense in my head.

But apparently it can also "speed up" when passing from a dense to a less dense medium? How is this possible? Where does the energy for acceleration come from?

I'm studying molecular biology so I don't understand too much about physics ;)

submitted by /u/geneKnockDown-101
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If a hose is against more pressure than what it produces, what happens?

Posted: 24 Feb 2021 11:20 AM PST

For example, if a hose spews water at a certain pressure, and it is facing upwards in a relatively deep water body, which creates more pressure than what the hose is exerting, what happens? Does the water go backwards through the hose? Or does it simply stop?

submitted by /u/Diegootmz
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New flu strains evolve and successfully spread every year. Does this mean flu is getting more infectious every year?

Posted: 24 Feb 2021 07:49 AM PST

When new strains evolve and spread, this is them evolutionarily out-competing the old strains, right? That is, they're better able to spread their numbers than the old strains are. Isn't this equivalent to saying the new strains are more infectious than the old ones? If so, and this process happens year on year, doesn't that mean the flu virus is evolving to be ever more infectious as time passes?

Or am I misunderstand the way new strains work?

submitted by /u/Wootery
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Could there be a magnet so powerful that it attracts human beings like an ordinary magnet attracts screws/nails?

Posted: 24 Feb 2021 02:25 AM PST

I ask because humans contain many metals (iron, calcium, etc.) and also we're like 70% water and I've read that water is lowkey magnetic

submitted by /u/ChadMojito
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