Why do electrical appliances always hum/buzz at a g pitch? |
- Why do electrical appliances always hum/buzz at a g pitch?
- If temperature is the cumulative speed of molecules in a material, what exactly produces the infra-red light we commonly associate as heat?
- Is it possible that there are systems in space with rocky bodies at the center?
- Are rDNA-based vaccines a possibility?
- What does the Reiman Zeta Function tell us about primes?
- Where do stars get their Neutrons from for fusion?
- There have been documented instances of individuals who couldn't experience pain, only pleasure and other positive sensations, however, has there ever been an observation on an individual who could only experience pain? What would that even look like? Could it be artificially replicated?
- Are there any animals that migrate and hibernate?
- How are coconut crabs able to breathe?
- How much does the length of day night cycle affects the seasonal temperature changes?
- What causes stars to switch from Hydrogen fusion to using heavier elements?
- Since sound is normally classified as vibrations transfered through a medium to our ears, could there be mediums out there that create notes and pitches that fall outside of the A-G scale or anything we would recognize on Earth?
- In binary star systems, will both stars die at the same time, or at different times?
- How do boulders come to be?
- What is the proof that you can’t (in general) find the kth state of a Turing machine in fewer than k steps?
- Are SARS and MERS more lethal to men than to women?
- How much of the unique methylation patterns from parental gametes are conserved in the embryo after demethylation?
- Will the night sky ever be more stars than darkness?
- Why does dew bead on the serrates of these strawberry leaves?
- What do we know about ancient measuring systems?
| Why do electrical appliances always hum/buzz at a g pitch? Posted: 28 Mar 2021 10:55 AM PDT I always hear this from appliances in my house. Edit: I am in Europe, for those wondering. [link] [comments]  |
| Posted: 29 Mar 2021 01:38 AM PDT |
| Is it possible that there are systems in space with rocky bodies at the center? Posted: 28 Mar 2021 08:53 PM PDT My understanding of how solar systems form is that a supernova scatters various elements across an area which then coalesce into what most people think of as a solar system, with a sun and planets. So why is it that the hydrogen and helium tend to end up at the center of a system, and couldn't there be a system with a rocky "sun" that holds most of the mass? Or do suns have the same concentration of other elements as the rest of the system hidden behind all the fusion products? [link] [comments]  |
| Are rDNA-based vaccines a possibility? Posted: 28 Mar 2021 12:12 PM PDT I know most COVID-19 vaccines are administered using messenger RNA (mRNA) that gets transported to the ribosomes and decoded into the spike protein found on SARS-CoV-2. Instead of using this to get our own bodies to manufacture the protein to generate an immune response, why not encode the protein into DNA and insert it into a bacterial genome to have the bacteria crank out copies of the protein like we do for insulin? Extract and purify the protein, then administer that? Wouldn't that get rid of the need for the lipid envelopes and the difficulty of getting the mRNA into cells? Wouldn't it be much like a dead-organism vaccine then? What are the drawbacks of this method? [link] [comments]  |
| What does the Reiman Zeta Function tell us about primes? Posted: 28 Mar 2021 09:11 PM PDT I've seen a number of educational youtube videos about the Reiman Zeta Function. I get the basics for how it works but I'm still a little fuzzy on why it's so important. The video-makers always say something to the effect of "it encodes certain information about prime numbers" but never go into any more detail than that. So what does it tell us about primes and what are its uses beyond that as well? [link] [comments]  |
| Where do stars get their Neutrons from for fusion? Posted: 29 Mar 2021 06:24 AM PDT Tried to google this, but any combination of "star" and "neutron" gave me "neutron star" I am trying to understand where stars get their neutrons from if they start by just fusing hydrogen into helium. If it's from Deuterium and Tritium it seems the concentration would be too low to be substantial. And it seems it's not possible that the electrons and protons merge like they do in a neutron star. Where am I going wrong here? Do stars fuse hydrogen into mostly HE2? If this is the case it kicks the question down to when helium fuses into carbon. [link] [comments]  |
| Posted: 28 Mar 2021 05:38 PM PDT Mainly that this might be used far enough in the future for torture if it's possible, then again, there's always the possibility that these individuals would always just kill themselves making it kind of innefective, so maybe that makes it less likely thankfully. [link] [comments]  |
| Are there any animals that migrate and hibernate? Posted: 28 Mar 2021 04:06 PM PDT Just interested if there any any animals that move from one place to another to hibernate? [link] [comments]  |
| How are coconut crabs able to breathe? Posted: 28 Mar 2021 05:28 PM PDT My understanding of land arthropod respiration is that due to their open circulatory systems their size is limited by atmospheric oxygen concentration. This is why they were able to be mich bigger during the carboniferous period. So if that is the case, then how are arthropods like coconut crabs which are comparable in size to some carboniferous arthropods able to reach that size with the current atmospheric oxygen concentration? [link] [comments]  |
| How much does the length of day night cycle affects the seasonal temperature changes? Posted: 28 Mar 2021 09:01 PM PDT I was doing some brain storming and world building with a ring world set up (the Niven kind). I want my ring world to have different climate and seasons. The climate part can be solved by making the ring world more akin to a torus, and the sections with higher latitude (close to the ring world's upper and lower edge) would be similar to the ones on earth. However the season part might be a bit tricky. I am using an inner ring of interchanging plates of different opacity to simulate day night cycle, as well as different shapes to simulate change of length of day night cycles over different seasons. However, I know the cause of the season on Earth (axial tilt and all that) but a ring world can not have an axial tilt. I wonder, is the day night cycle alone enough to generate season by having different regions receiving sunlight at different time interval lengths, or that having the angle of the sunlight changing is necessary to generate the temperature difference. (Assume the ring does have an atmosphere on the inner side, and all other conditions similar to earth) (I was going to post this on r/worldbuilding,but since there are some science questions I would post here as well) [link] [comments]  |
| What causes stars to switch from Hydrogen fusion to using heavier elements? Posted: 28 Mar 2021 10:42 AM PDT When talking about the life cycle of stars, people often say something along the lines of "when a star runs out of hydrogen to fuse into helium, it has to start performing fusion with heavier elements to keep producing energy." But this glides over a lot of details and also frames the star as having some sort of agency, which is obviously not the case. So my questions are:
Thanks in advance! [link] [comments]  |
| Posted: 29 Mar 2021 12:04 AM PDT |
| In binary star systems, will both stars die at the same time, or at different times? Posted: 28 Mar 2021 11:18 AM PDT |
| Posted: 28 Mar 2021 09:57 PM PDT How does a boulder -- a giant rock just sitting on the earth -- come to be? Was this rock a part of the earth at one point and everything around it eroded? Why is it the way it is? Sometimes, there's more than 1! What happened there?! [link] [comments]  |
| Posted: 28 Mar 2021 08:42 PM PDT I've seen it often asserted as basically obvious gospel but never seen an actual proof. It also seems inherent to the proof that the bounded halting problem is in exptime, but again that part of the question always seems to be just stated as obvious rather than derived. I understand the inherent unpredictability of Turing machines, like how can't in general know if a Turing machine ever prints a 1. But you absolutely can know if it prints a 1 in k steps. What's to stop there from being an algorithm that tells you the kth state of a Turing machine in, for instance, log k steps? [link] [comments]  |
| Are SARS and MERS more lethal to men than to women? Posted: 28 Mar 2021 08:19 AM PDT If I've understood correctly, COVID-19 is nearly 50% more lethal to men than to women. Is this common for coronaviruses or is this a unique feature to COVID-19? If this isn't the right place to ask, can someone tell me where I could ask this question instead? I tried googling but didn't find a clear answer. Thank you for your time! <3 [link] [comments]  |
| Posted: 28 Mar 2021 10:09 AM PDT Parental gametes have unique methylation patterns. Early on in embryonic development, there is a demethylation cascade that largely resets the methylome. Obviously imprinted, sex-dependent methylations are predictably reestablished in the embryo, but I'm curious how much of the unique, non-imprinted methylation patterns from the parental methylomes make it through to the embryo. [link] [comments]  |
| Will the night sky ever be more stars than darkness? Posted: 28 Mar 2021 02:47 PM PDT Given enough time, will enough light from distant stars reach Earth so that our night sky will be more than 50% stars? [link] [comments]  |
| Why does dew bead on the serrates of these strawberry leaves? Posted: 28 Mar 2021 04:03 AM PDT |
| What do we know about ancient measuring systems? Posted: 28 Mar 2021 05:09 AM PDT Ancient societies built incredible structures like the Lighthouse of Alexandria or the Pyramids of Giza. They must have had some form of measurement system or units of measurement to achieve these feats. Are there any known standardised ancient units of measurements like our modern meter? Or did they simply standardise a unit of measurement for each project with a length of timber or something? I'm most interested in ancient Egyptians and the Roman Empire, but I'd love to hear about other ancient societies we might have evidence for use of standardised measuring. [link] [comments]  |
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