How did Schrodinger come up with the wave equation, if he didn't derive it? |
- How did Schrodinger come up with the wave equation, if he didn't derive it?
- Why do waterfalls sound like white noise? What’s the mechanism that causes this?
- Why are there so many salt deposits in the Great Lakes? Wouldn't this be counterintuitive since they are freshwater lakes?
- Can scientists tell if trees in a forest are related ("parents"/"children") to each other?
- Do quadrapedal animals experience hand-dominance?
- What will happen other than hyperpigmentation if our body is exposed to excess Eumelanin? Will there be any other negative consequences?
- What is the context of the geometric mean when the 50 ohm compromise for impedance matching was determined?
- How long did it take for the dinosaurs to go extinct?
- How does losing your sense of taste affect digestion?
- What happens if a person who was previously vaccinated against rabies gets bitten by a rabid animal (and doesn’t go get booster shots or anything, they just rely on their previous vaccination)?
- Why don't Crustaceans have streaks or linings of fat in them like mammals, birds and fish do?
- Does it matter what type of stem cells are used in tissue engineering?
- How can radium (solid) decay into radon (gas) and then back into polonium (solid)?
- Do humans have a specific taste receptor for lead salts that makes it taste sweet or does it bind to existing taste receptors?
- Can a routine blood test (CBC) detect a blood clot or pulmonary embolism?
- Does the amount of sleep needed changes according to the intensity of your day?
- Can light change frequency after passing thru a substance?
- In cultures with a concept of 'profanity' (as English speakers would think of it), is it universal to curse when under stress or in pain? Why?
- Would a star ever be able to produce elements heavier than iron?
- Are there still gaps in Newtonian physics?
- Why were enantiornithes the dominant small, flying dinosaur before the K-Pg extinction event whereas aves seemed to be a small, niche group of species? Which features made enantiornithes better suited for that world than aves?
| How did Schrodinger come up with the wave equation, if he didn't derive it? Posted: 13 Nov 2021 07:55 AM PST I am from India and conservative people often boast about how Schrodinger got his wave equation from Hinduism. They say Schrodinger, because he used to study Hindu scriptures, got the equation inspired from Vedanta. Now, I know this is pseudoscience, so I tried to see how Schrodinger derived it. Google search says the equation can't be derived and is axiomatic. Then...how did he make this equation? Did his mind just produce this equation out of sheer intuition? I thought maybe its like how Newton got F=dp/dt, but again, this equation is far too complex to just come out of nothing. So...what's happening? [link] [comments] |
| Why do waterfalls sound like white noise? What’s the mechanism that causes this? Posted: 13 Nov 2021 03:07 AM PST |
| Posted: 13 Nov 2021 04:57 AM PST Furthermore, is it more common for salt deposits to be under land underwater? [link] [comments] |
| Can scientists tell if trees in a forest are related ("parents"/"children") to each other? Posted: 13 Nov 2021 10:26 AM PST I understand that we can obviously say that a bunch of trees living near each other likely all came from the same group of older or long dead trees. But I mean can we scientifically say "Yes this tree is this other tree's direct descendant" or "this tree and this other tree came from the same 'parent'?" For example, if we were to analyze the younger sequoia trees in the area around General Sherman in Sequoia National Park, could we say scientifically that this tree is General Sherman's "child", this other tree is the "grandchild", etc? I hope this makes sense. [link] [comments] |
| Do quadrapedal animals experience hand-dominance? Posted: 13 Nov 2021 09:47 AM PST I was just playing with my cats, and realized that since they use they're front paws a lot like humans use their hands, that they might experience hand-dominance vs natural ambidexterity. Does hand-dominance exist on quadrapeds? Also, sorry, there wasn't a flair for Zoology, so if this is the wrong sub let me know. [link] [comments] |
| Posted: 13 Nov 2021 07:21 AM PST I was wondering about how tanning injections work and dug up a bit in the internet. I found out that Eumelanin is a pigment that is responsible for the dark skin colour in some people. I am curious to know why tanning injections have negative implications on human body. Is it because of Eumelanin or some other substance? If no harm is caused by exposure of Eumelanin, why is it not used in treating albinism? [link] [comments] |
| Posted: 12 Nov 2021 05:07 PM PST I had wished to understand why transmission lines and other electrical systems typically use 50ohm loads for impedance. Everywhere I look online, websites just repeat the facts that this is derived from taking the values that provide highest power transfer (30 ohms), lowest power loss (77 ohms), finding the arithmetic mean (53.5) and geometric mean (48), and 50 is a compromise between them. There's a lot of other history and data on various other values, but I'm hung up on why geometric mean was considered. I understand the arithmetic mean more intuitively as a midway point between these two ideals, but I can't wrap my head around the purpose of the latter. I have only seen the GM used in basic geometry for triangle side ratios or for certain statistical growth scenarios so I don't have a good image of its use in this real world application; is there a connection with the trigonometry of RF waves and reactive components, or something simpler? [link] [comments] |
| How long did it take for the dinosaurs to go extinct? Posted: 13 Nov 2021 07:43 AM PST It has been determined that the dinosaurs went extinct due to an asteroid hitting Earth. I feel that many people, myself included, believe that once the asteroid hit, the dinosaurs died almost instantly. Was this actually the case or did it take days, weeks, or even years for the dinosaurs to go extinct after the asteroid hit? [link] [comments] |
| How does losing your sense of taste affect digestion? Posted: 13 Nov 2021 09:54 AM PST I was taught that as soon as your tongue detects certain tastes (e.g. sugar) your body prepares to process that food (e.g. produce insulin), but if your sense of taste is impaired, does digestion proceed optimally? Is it slowed down? [link] [comments] |
| Posted: 12 Nov 2021 09:27 AM PST edit: follow up question, is there some sort of "mild rabies" where you have just enough rabies antibodies to not die, but not enough the resist rabies fully? or is it death or no death and no in betweens [link] [comments] |
| Why don't Crustaceans have streaks or linings of fat in them like mammals, birds and fish do? Posted: 13 Nov 2021 08:16 AM PST |
| Does it matter what type of stem cells are used in tissue engineering? Posted: 13 Nov 2021 08:15 AM PST I am not referring to adult stem cells vs embryonic stem cells, rather, for instance, dental follicle cells vs. dental pulp cells, in engineering of dental tissue. Thank you! [link] [comments] |
| How can radium (solid) decay into radon (gas) and then back into polonium (solid)? Posted: 13 Nov 2021 08:56 AM PST Like what is the determining factor in what makes a gas and how does radioactive decay alter this factor that substantially, only for it to be changed back immediately afterward? [link] [comments] |
| Posted: 12 Nov 2021 10:41 PM PST Just wondering why our body evolved the ability to taste lead in a way that doesn't make us instinctively hate it. [link] [comments] |
| Can a routine blood test (CBC) detect a blood clot or pulmonary embolism? Posted: 12 Nov 2021 09:59 PM PST |
| Does the amount of sleep needed changes according to the intensity of your day? Posted: 12 Nov 2021 07:37 PM PST If you have been hard at work for the whole day do you need your more then 7-9 hours Or alternatively if you have been sitting on your butt all day do you need less then 7-9? [link] [comments] |
| Can light change frequency after passing thru a substance? Posted: 12 Nov 2021 06:08 PM PST Is there a substance that when visible light passes through it, it changes into say, radio waves, or vice versa? [link] [comments] |
| Posted: 12 Nov 2021 10:10 AM PST This question is actually an intersection of psychology, neuroscience, and linguistics, but the psych/neuroscience element is most interesting to me. I'm tetra-lingual (knowing 3 Indo-European languages and 1 Dravidian language) and in each language I'm familiar with there are a subset of words that are sort of "taboo" to use in polite company but it is common to shout them when in distress, like if you are hurt or angry. Is this a universal thing across languages and language families? Are these cultures that don't have such 'profanity' taboos? And where it does exist, why do people tend to utter these words specifically under stress but put up a taboo around doing it at other times? Is there a psychiatric element to this and is it at all related to the vocal tics that come with impulse control disorders? [link] [comments] |
| Would a star ever be able to produce elements heavier than iron? Posted: 12 Nov 2021 11:50 AM PST In a hypothetical situation in which one was able to add a large amount of hydrogen back into the core of a star passed its hydrogen burning stage, would the addition of enough hydrogen be able to get the core hot enough to create elements heavier than iron? [link] [comments] |
| Are there still gaps in Newtonian physics? Posted: 12 Nov 2021 06:26 PM PST Quick question from a high school student: Hey, I've just been thinking about this a lot: almost every real world phenomenon can be expressed as some type of equation, or a combination of equations, and every quantity can be calculated like-wise. So yeah, are there still gaps in Newtonian physics? It's the only thing we've discussed so far. In any case, it doesn't feel good to make a paper that seems like it is just a rehash of other papers with some of the slightest modifications. While this branch of physics is more useful in our everyday lives, it does feel like something like quantum physics, as well as astrophysics and cosmology are going to take the lead in the future in terms of research. And so I am very excited to learn about those next academic year. [link] [comments] |
| Posted: 12 Nov 2021 10:24 AM PST It seems that the major hallmarks of aves (beak, no physical tail, no claw on wings) had evolved separately several different times in therapod evolution going back tens of millions of years before the K-Pg extinction event yet enantiornithes (which mostly still had a mouth with teeth, at least a small physical tail and a tiny claw on their wings) remained the dominant small, feathered flying dinosaur. A follow-up question - Are there any features of birds, such as having a beak, thought to be an evolutionary adaptation that can't be done in reverse? As in, a bird having a mouth with teeth might be "better" in certain modern ecological scenarios but the mutations needed to for a bird species to evolve that is virtually impossible? [link] [comments] |
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