From my 7 year old: Do the things in our bodies ever get tired? Like cells and antibodies? Do they have to rest? |
- From my 7 year old: Do the things in our bodies ever get tired? Like cells and antibodies? Do they have to rest?
- If I’m vaccinated against and then exposed to a virus, but don’t contract the virus, has my immunity been enhanced by the exposure?
- Why could infections such as smallpox and rabies by prevented with vaccination given shortly after exposure, while vaccination against Covid-19 requires between two and three weeks to offer protection?
- Ask Anything Wednesday - Engineering, Mathematics, Computer Science
- Do at-home COVID-19 tests detect any form of coronavirus, or just COVID-19 specifically?
- How do T-cell recognize HIV DNA in them ?
- How was the unfurling of the James Webb golden mirror tested?
- What percentage of people who have COVID-19 are asymptomatic? How does this vary by variant?
- When you’re hooked up to a hospital bed and it’s monitoring your “vitals”, which measurements are actually considered your vitals?
- When the moon broke off from the earth, why did it separate from the earth and start orbiting around earth instead of dropping straight down because of gravity? Why does the moon still spin around earth instead of being attracted in the direction of earth and colliding with it?
- I aim a laser beam at a mirror and reflect it back to me. Is there a point in time when the velocity of the beam of light is zero? A point (maybe only in theory) when the beam has struck the mirror but has not yet been reflected back?
- What difference does it make if a medication cannot cross the blood brain barrier?
- What do we know about the omicron variant mutations BESIDES the spike proteins?
| Posted: 15 Dec 2021 05:16 AM PST |
| Posted: 15 Dec 2021 06:39 AM PST |
| Posted: 15 Dec 2021 05:49 AM PST In almost all cases, a person exposed to rabies can be prevented from developing the disease if rabies vaccine is administered within a few hours following exposure. The same was true when smallpox was in circulation, with a dose of smallpox vaccine able to prevent the condition from developing if delivered within ~4 days of exposure. The current range of Covid-19 vaccines, however, are unable to be used to prevent illness following exposure and take between two and three weeks to offer protection. What are the reasons behind the differing behaviour of vaccines between these different diseases? [link] [comments] |
| Ask Anything Wednesday - Engineering, Mathematics, Computer Science Posted: 15 Dec 2021 07:00 AM PST Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer Science Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! [link] [comments] |
| Do at-home COVID-19 tests detect any form of coronavirus, or just COVID-19 specifically? Posted: 15 Dec 2021 07:12 AM PST This question came to my mind this morning when I tested positive on an at-home test. I can't find any information online about how specifically the tests work, but I was more just curious. Clearly I'm in full-blown denial I tested positive on the Abbott at-home test, but I'm curious about the exact science behind how these at-home tests work. [link] [comments] |
| How do T-cell recognize HIV DNA in them ? Posted: 15 Dec 2021 06:17 AM PST From what I understand, a significant part of our genome is viral genome. (Around 8% at least) On the other hand, when one has AIDS, most of the destroyed T-cells actually commit suicide, because they realize they have HIV DNA (viral DNA) in them. So, where did I miss a step ? Because as it is, it would mean T-cells should all self-explode. [link] [comments] |
| How was the unfurling of the James Webb golden mirror tested? Posted: 14 Dec 2021 02:28 PM PST Considering we can't recreate the exact conditions that will exist at L2 how did the NASA scientists convince themselves that all of the 344 'single points of failure' would succeed? If those 344 points are truly independent they need a very high confidence in each step of the process. How do you get that kind of confidence in something this complicated?
[link] [comments] |
| What percentage of people who have COVID-19 are asymptomatic? How does this vary by variant? Posted: 15 Dec 2021 04:52 AM PST I recall a figure, from last year I think, saying that one third of people who had COVID19 didn't display any symptoms. Has that figure changed much, either by time or due to the new variants emerging? [link] [comments] |
| Posted: 14 Dec 2021 07:03 PM PST |
| Posted: 14 Dec 2021 07:07 PM PST |
| Posted: 14 Dec 2021 10:12 PM PST In other words, does the velocity of the beam of light go from c, to zero, to c; or does it remain at c throughout the process of reflection? I honestly don't know if this is a stupid question or not. If it is a stupid question, I apologize. [link] [comments] |
| What difference does it make if a medication cannot cross the blood brain barrier? Posted: 14 Dec 2021 07:03 PM PST |
| What do we know about the omicron variant mutations BESIDES the spike proteins? Posted: 14 Dec 2021 07:43 PM PST I keep hearing about mutations to spike proteins with every new variant. However I have never once heard about mutations to the rest of the structure of the virus. I would think that a corona virus, and the effects that it has on us, is more than just effects of the spike proteins. So does the rest of the virus mutate at all, and where can I find information in that? [link] [comments] |
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