Do we have evidence that Omicron is "more mild" than Delta coronavirus? |
- Do we have evidence that Omicron is "more mild" than Delta coronavirus?
- Two bowling balls are at rest 5 Megaparsecs apart, and connected with a cable. Is there any tension in the cable caused by universal expansion?
- How come men can lose their hair, while it rarely happens in women?
- How does half life work?
- Why does solar pressure cause rotations of the JWST instead of just pushing it away uniformly?
- what are periods like for people in space/the iss?
- In terms of number of planets, how big is our solar system compared to other planetary systems discovered?
- Do animals' seasonal adaption cycles (antlers, winter coats, etc.) change if the animal is transported from the northern to southern hemisphere? (or vice versa)
- How do you use the JWST?
- What exactly IS displacement current and why is it called current if its not actually a current?
- Can you get Covid from animals infected with the Sars-Cov-2 virus?
- Just how unique are HeLa cells?
- Are there plane-filling curves that fill an infinite plane?
- How does Humira (TNF-a antagonist) differ from Skyrizi (IL-17/23 inhibitor)?
- How did scientists know about the presence of brain neurotransmitters and what they are made of?
- How Is adderall related to meth?
- At what scale is the universe expanding?
- Does the James Webb telescope have an increased risk of dust or micrometeorites impacts at the L2 point?
- A fossilized therapod embryo named "Baby Yingliang" was recently discovered in China. How can scientists tell from a fossil that the embryo was a dinosaur and not a more modern bird?
- Will the JWST sun sheild unintentionally act as a solar sail?
| Do we have evidence that Omicron is "more mild" than Delta coronavirus? Posted: 30 Dec 2021 06:42 AM PST I've seen this before in other topics, where an expert makes a statement with qualifications (for example, "this variant right now seems more 'mild', but we can't say for sure until we have more data"). Soon, a black and white variation of the comment becomes media narrative. Do we really know that Omicron symptoms are more "mild"? (I'm leaving the term "mild" open to interpretation, because I don't even know what the media really means when they use the word.) And perhaps the observation took into account vaccination numbers that weren't there when Delta first propagated. If you look at two unvaccinated twins, one positively infected with Delta, one positively infected with Omicron, can we be reasonably assured that Omicron patient will do better? [link] [comments] |
| Posted: 30 Dec 2021 12:32 PM PST According to Hubble's Law, at 5 Mpcs distance each bowling ball would see the other receding at 351.5 km/s, but the cable prevents that from happening. Does that mean there's a "cosmological stress" in the cable induced by the expansion? [link] [comments] |
| How come men can lose their hair, while it rarely happens in women? Posted: 30 Dec 2021 04:55 AM PST What biological processes exist for women that make them much less likely to go bald? [link] [comments] |
| Posted: 30 Dec 2021 05:56 AM PST |
| Why does solar pressure cause rotations of the JWST instead of just pushing it away uniformly? Posted: 30 Dec 2021 11:37 AM PST I've been curious about this for a long time and I expected that when the Aft Momentum Flap was eventually deployed (as it was today), there would be more layman-accessible explanations of this; however, I've not found any. My naive first guess about how solar pressure would affect JWST would be that the force would be uniformly in one direction: outward from the sun, and therefore cause it to move slightly away from the sun over time, but not cause any changes in rotations or orientation. So how, exactly, does solar pressure cause rotations of the JWST instead? So far the only explanation I've found is what it says in NASA's blog, which doesn't explain how solar pressure causes rotations (https://blogs.nasa.gov/webb/2021/12/30/webbs-aft-momentum-flap-deployed/):
One explanation that occurred to me is that the telescope is running into more solar wind in the direction of motion (like how a fast runner runs into more rain droplets on their front than their back), is that on the right track? Bonus question: how does the Aft Momentum Flap counteract the force? (Although perhaps the answer will be self-evident after one understands the reason for the rotation.) [link] [comments] |
| what are periods like for people in space/the iss? Posted: 30 Dec 2021 04:07 AM PST |
| Posted: 30 Dec 2021 08:36 AM PST |
| Posted: 30 Dec 2021 07:44 AM PST |
| Posted: 30 Dec 2021 03:45 AM PST The JWST is on its way, it's make me wonder who and how do you use it? To all astronomers in this group who have used a space telescope, what is the bureaucracy and technical process of using such a device? [link] [comments] |
| What exactly IS displacement current and why is it called current if its not actually a current? Posted: 30 Dec 2021 09:53 AM PST So I thought displacement current was essentially current per area, as those are its units, but RobusEtceterus pointed out, in another thread, that it doesn't actually jave anything to do current and is instead a time varying E field. But if it a time varying E field, why doesn't it have units of (E field)/time? I did look up displacement current and Wikipedia says it's the time derivative of D. I learned about the D field a couple months in my intro to electromagnetics course and the definition I was using then, as it's the only one I could find that made any kind of intuitive sense, from www.byjus.com is: "Electric displacement, denoted by D, is the charge per unit area that would be displaced across a layer of conductor placed across an electric field. It is also known as electric flux density." The term "displacement" make it sound like the charges are actually moving, which of course makes me think of a current, but thinking more careful about the above definition, it say "the charge per unit area that would be displaced", which makes it sound like there isn't any actual displacement. But, it would be displaced...if what? And if displacement current is the time derivative, that makes me think there has to be SOME movement going on, and if the charges are, moving, them wouldn't that mean a current? Furthermore, how is this related to the E field anymore than regular old current is? (That's not to say that current isn't related to the E field, but that we usually use voltage and current as higher level abstractions to avoid having to explicitly talk about fields, and I don't see how displacement current is anymore linked to the E field than the current is). [link] [comments] |
| Can you get Covid from animals infected with the Sars-Cov-2 virus? Posted: 29 Dec 2021 05:26 PM PST ETA: I meant if you eat the flesh of the animal - ie: deer. Sometimes my mind goes faster than my finger can type lol [link] [comments] |
| Just how unique are HeLa cells? Posted: 30 Dec 2021 07:26 AM PST Simplifying the question, out of 8 billion people, how many would have this type of cell structure and behaviour? Do you have to have cancer for this kind of multiplication or can it happen in normal, healthy cells too? I tried to google the question without success. I am guessing it might be impossible to answer correctly. Wikipedia says there are other immortalized cell lines, including from monkey kidney. I am curious about the occurrence of that behaviour in humans. [link] [comments] |
| Are there plane-filling curves that fill an infinite plane? Posted: 30 Dec 2021 08:29 AM PST |
| How does Humira (TNF-a antagonist) differ from Skyrizi (IL-17/23 inhibitor)? Posted: 30 Dec 2021 03:28 AM PST I'm curious how these biologics relate to one another, and specifically how TNF-a influences skeletal muscle [link] [comments] |
| How did scientists know about the presence of brain neurotransmitters and what they are made of? Posted: 30 Dec 2021 12:10 AM PST Like, we know about serotonin, dopamine, endorphin, etc. but how did the study of it all started? And how did scientists know what chemical compounds the neurotransmitters are made of? [link] [comments] |
| How Is adderall related to meth? Posted: 30 Dec 2021 01:05 AM PST I saw that the adderall has amphetamine salts but I've never taken a chemistry course so I'm wondering what exactly does that mean to it's relation with meth. How are they the same? Are they different? [link] [comments] |
| At what scale is the universe expanding? Posted: 29 Dec 2021 11:52 PM PST I understand (more or less, a lot less) that the universe isn't expanding "into" anywhere, but where within the universe is the expansion happening? Is the space between atoms, or the subatomic particles comprising atoms increasing? Are the particles themselves getting bigger? (Compared to what?) Am I getting bigger? (Besides the quarantine 15 I mean). Is the distance between the earth and the moon, or the sun, or the distance from New York to London getting bigger? [link] [comments] |
| Posted: 30 Dec 2021 04:22 AM PST Does the L2 point have any significant attraction that would put James Webb at increased risk of damage to its mirrors from stray dust? I'm not very familiar with the mechanics of the Lagrangian points... [link] [comments] |
| Posted: 29 Dec 2021 05:32 PM PST A fossilized therapod embryo named "Baby Yingliang" was recently discovered in China about a week ago, and the pictures of it look remarkably (to my untrained eye) like a bird. I know the link between therapods and birds is a big part of why this fossil is interesting, but how can they be so sure it's a dinosaur and not just some extinct bird? Can you DNA test a fossil? (I feel like you can't) [link] [comments] |
| Will the JWST sun sheild unintentionally act as a solar sail? Posted: 30 Dec 2021 04:19 AM PST I have heard of the concept of solar sails before and am curios (tried searching the subject) if the JWST sun sheild will unintentionally act as a solar sail and need to some how be accounted for and off set. [link] [comments] |
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