Do humans actually have invisible stripes? |
- Do humans actually have invisible stripes?
- How is a mosquito proboscis physically capable of puncturing human skin?
- [Medicine] Would a child born without parts of their limbs, e.g. no phalanges from amniotic band syndrome, still have phantom sensations the way an adult who has lost a limb would have?
- In TV shows, there are occasionally scenes in which a character takes a syringe of “knock-out juice” and jams it into the body of someone they need to render unconscious. That’s not at all how it works in real life, right?
- Is the integer assigned to Kepler objects of interests random, or is there a system ? (for example, the star KOI-718, is the 718 assigned as a random integer?)
- can humans be born with cancer?
- Is it possible to get close enough to a galaxy so that it's bright for the human eye, yet far enough that you can see it's full shape?
- How can radiation cause burns?
- What is the difference between an accent and a dialect?
- How come some things melt and some things dry before burning?
- What is the difference between NMN and βNMN?
- When astronomers say that "space is expanding," does that just mean that the things in space are moving away (say, from 3 to 7 cm on a ruler), or does it mean the unit length itself is being distorted (it's still 3 cm, but centimeters themselves are now longer)?
- What is the density of the Carina Nebula?
- No one answered my previous question, here is why I want to know if we can tell if particles are still entangled without disrupting said entanglement?
- If I warm up a sandwich, would the energy needed to heat it up be equal to amount of energy needed to accelerate that sandwich to achieve same root-mean-square speed of its molecules?
- Alternators convert kinetic energy into electrical energy, where does the energy go when the circuit is broken?
- Would it be possible to use the James Webb Space telescope to look at planets in our own solar system and see them in more detail or through a thick atmosphere to their surface?
- What does AdS/CFT correspondence really tell us about the physics of gravity?
- Do strong bases saponify the phospholipids in your skin?
- Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology
- is there a limit on how far back in time we can see with a telescope?
- Botany: What is the difference between elaiosomes and fruit?
- Wouldn’t we get the same or a similar deep field image from pointing the telescope anywhere else in space?
- How do astronomers find the oldest sections of the sky to look at?
Do humans actually have invisible stripes? Posted: 13 Jul 2022 07:18 PM PDT I know it sounds like a really stupid question, but I've heard people say that humans have stripes or patterns on their skin that aren't visible to the naked eye, but can show up under certain types of UV lights. Is that true or just completely bogus? If it is true, how would I be able to see them? Would they be unique to each person like a fingerprint? [link] [comments] |
How is a mosquito proboscis physically capable of puncturing human skin? Posted: 13 Jul 2022 01:44 PM PDT Human skin should be way too dense and strong for something so small and fragile like a mosquito. How is this possible? [link] [comments] |
Posted: 13 Jul 2022 06:50 PM PDT Saw an x-ray of a baby without fingers from amniotic band syndrome and was curious. Personally I couldn't find research papers or other info on it. Thank you! [link] [comments] |
Posted: 12 Jul 2022 07:09 PM PDT |
Posted: 13 Jul 2022 07:50 PM PDT |
can humans be born with cancer? Posted: 13 Jul 2022 10:02 PM PDT |
Posted: 13 Jul 2022 10:21 PM PDT Since telescopes compress the focal range astronomically, wouldn't it be impossible to see galaxies as they appear in images? I guess another way to put this is, I'm thinking that at any given planet in the universe, discounting any close objects, the night sky will always be dark with tiny twinkles. I can't imagine being close enough for it to be visible without being "in" the galaxy. Is this right? [link] [comments] |
How can radiation cause burns? Posted: 13 Jul 2022 06:55 AM PDT I wouldn't guess it transfers much heat so why does it cause skin "burns"? [link] [comments] |
What is the difference between an accent and a dialect? Posted: 13 Jul 2022 06:44 PM PDT |
How come some things melt and some things dry before burning? Posted: 13 Jul 2022 07:45 PM PDT |
What is the difference between NMN and βNMN? Posted: 14 Jul 2022 03:23 AM PDT |
Posted: 12 Jul 2022 06:15 PM PDT |
What is the density of the Carina Nebula? Posted: 13 Jul 2022 07:13 PM PDT In a James Webb photo thread, someone posted that the Carina Nebula has a density of a few atoms per cubic meter. This seems off to me, as this is close to the average density of the intergalactic medium of one atom per cubic meter, which is much less than the interstellar medium average density of one atom per cubic centimeter, which is much less than the average density of a planetary nebular (100-10,000 atoms per cubic centimeter). But I can't find any information on the web to help me understand this better. [link] [comments] |
Posted: 14 Jul 2022 02:38 AM PDT Two reasons actually, first, how do we know they are still entangled from just one end? And does the knowing disrupt the entanglement? So if we have two entangled particles and we send one out to orbit Jupiter (or anywhere far away) on a spaceship, can the people on the ship know if the particle is still entangled without disrupting the entanglement and without communicating at all with the people holding the other particle on Earth? What if we had the tech to send sets of 26 entangles particle pairs on the ship, for simple example we send 3 sets of 26 entangled particles, and designate each pair in each 26 set a letter of the alphabet, then the people on earth interrupted the pair, in the first set of 26, with the designation of the letter Y causing it to disentangle so the people on the ship would know that we disentangled the letter Y pair. Then the second set the people on Earth caused the pair designated letter E to disentangle, and then the third set they disentangle the pair designated letter S, have we not just communicated FTL? I'm a stupid monkey so just tell me why. [link] [comments] |
Posted: 13 Jul 2022 08:01 PM PDT |
Posted: 13 Jul 2022 11:14 AM PDT An alternator in a car is connected to a battery charging system : the spinny motion, magnets and copper, charges the battery, and some noise and heat is generated. A cable between the alternator and battery is cut : the battery does not charge. What happens to this generated energy? It can't be noise/heat/light. Energy can't be created or destroyed so where does this kinetic energy go? [link] [comments] |
Posted: 13 Jul 2022 05:52 PM PDT |
What does AdS/CFT correspondence really tell us about the physics of gravity? Posted: 13 Jul 2022 04:46 PM PDT My understanding of math/physics is formally at an undergraduate level, so I apologize in advance if my questions are confusing or not very well formulated. I've watched some videos about the holographic principle and how it was the attempts to solve the so-called black hole information paradox that lead to the development of string theories and the holographic principle. Ultimately this culminates in the correspondence between Anti-de Sitter spaces (a model of the universe under general relativity) and conformal field theories (i.e., quantum field theories). In the video here, the presenter tells us two things: 1.) That this correspondence leads to a "natural" theory of quantum gravity, and 2.) that interactions (between quantum particles?) on the boundary of the mathematical object's surface correspond to the emergence of gravity within the volume. However, he tells us that this isn't applicable to our universe, because anti-de Sitter spaces assume a negative curvature on the space-time metric, while as far as I understand, in reality it is zero (i.e., a Minkowski space-time). So my questions are twofold: what quantum information is the problem here, and in need of conservation; are they things like spins and energies, and why does this lead to the holographic principle? Secondly, what is being said about the actual physics going on between quantum field theories and gravity with regards to this strange mathematical object? [link] [comments] |
Do strong bases saponify the phospholipids in your skin? Posted: 13 Jul 2022 07:05 PM PDT |
Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology Posted: 13 Jul 2022 07:00 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Economics, Political Science, Linguistics, Anthropology 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] |
is there a limit on how far back in time we can see with a telescope? Posted: 13 Jul 2022 04:26 AM PDT I've heard about how the JWST allows us to see things that happened close to the start of the universe. I sort of understand how this works, but I was wondering if there is any sort of theoretical limit on how long ago something could have happened that we could see with the telescope? Are there things that are just gone from our ability to observe, or will we be able to see further back by looking in the right places with more and more powerful telescopes? [link] [comments] |
Botany: What is the difference between elaiosomes and fruit? Posted: 13 Jul 2022 06:39 AM PDT Or are elaiosomes considered a type of fruit? And in that case, what defines them? Is it something structural or are they functionally defined by the relationship with ants? I just encountered the word for the first time, and I'm trying to put the information into the proper conceptual slot. The Wikipedia article is somewhat unclear and could use some revision, or at least more explanation in this regard. [link] [comments] |
Posted: 13 Jul 2022 12:58 PM PDT I feel that this is a silly question and I'm probably wrong but I was seeing a post of the scale of the dot where the JWST pointed at and people were surprised there were so many galaxies in that spot. But..there aren't right? There were that many galaxies that close together 13 billion years ago, not now. If what we're doing is looking into the early universe, and the universe has been expanding since the Big Bang, then aren't we just seeing those first galaxies as they were closer together than they would be today? And if what we're seeing is the very beginning of the universe then wouldn't pointing the telescope anywhere else for a long enough time reveal a similar picture? In fact, wouldn't we technically be seeing even the same early galaxies no matter where you point it at? [link] [comments] |
How do astronomers find the oldest sections of the sky to look at? Posted: 12 Jul 2022 08:07 PM PDT Obviously a lot of space related questions with the JWST doing it's thing, but i wanted to know how they find the ancient sections of space to analyze? Do they scan the entirety of space looking for super redshifted space, or are there areas of the sky that are known to be particularly old? [link] [comments] |
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