Does the universe have a size limit the way it has a speed limit? |
- Does the universe have a size limit the way it has a speed limit?
- How far away from the sun do you have to be before it's not the brightest star visible?
- Zeroth derivative is position. First is velocity. Second is acceleration. Is there anything meaningful past that if we keep deriving?
- Rumors of a gravitational wave discovery are circulating. What would the implications of a discovery be?
- Why does male pattern baldness follow the pattern it does? i.e. from the top of the head down, often in a perfectly straight circle around the head.
- How does the brain calculate the passing of time independent of simple estimation? Is there a biological mechanism?
- If black holes have infinite mass and mass can be converted into energy if you can harness the power of a black hole can you have infinite energy?
- If astroid mining is feasible, is there a risk that the extra resources would cause 'over-fertilization' of certain minerals on earth? Could this cause biosphere-wide problems?
- Is there currently any research into Psilocybin as a possible cure for Tinnitus?
- Is there a method for determining the source of detected gravity waves?
- Would anything in science change if we referred to protons as negative and electrons as positive? Are negative and positive only human names or do they have more meaning?
- [Physics] Would anything occur if a positron was forced to collide with a proton?
- How did space program pioneering engineers like Von Braun and Korolev know the exact reentry trajectory and angle to successfully come back to earth when no one had ever attempted it before?
- How do rigors "spread" throughout the body when someone feels cold or experiences a strong emotional response?
- How different are brains in "normal" people, and their structure, genetics and other things?
- What happens to volatile substances or compounds in vacuum?
- Is lung expansion the cause or effect of breathing?
- Is Tetrahydrocannabinol (THC) an alcohol?
- Why is the speed of light sometimes referred to as the universal speed limit?
- Is there a maximum acceleration of an object?
- Why can't helicopters fly at extreme altitudes but jets can? What's the difference between the two?
- Getting total annual rainfall or "wetness" in some form for Australia?
- Is there an inverse placebo effect? I.E. a patient's disbelief in drug efficacy can literally make a drug less effective?
- Why there are more dinosaurs fossils than hominids fossils? Why diosaurs fossils are more preserved than human fossils?
| Does the universe have a size limit the way it has a speed limit? Posted: I would imagine that it's some kind of ratio, but do objects in the universe have a size limit that they cannot exceed. My guess is that at a certain size it would implode or something. Edit: Thank you so much for the gold, random Reddit citizen! [link] [comments]  |
| How far away from the sun do you have to be before it's not the brightest star visible? Posted: |
| Posted: Intuitively a deritivate is just rate of change. Velocity is rate of change of your position. Acceleration is rate of change of your change of position. Does it keep going? [link] [comments]  |
| Posted: Does this discovery only mean legitimacy, which leads to funding and advancement? Or does this also mean a narrowing of a field of theories and therefore a refocusing of the science? [link] [comments]  |
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| Posted: The brain must use knowledge of how long thought processes take and can estimate time passing based on tasks and such, but is there a mechanism for linking to circadian rhythms or some other biological clock. I mean on a small scale. For example, I can often predict accurate to a minute or so when 5/10/15 minutes has passed, but my brain couldn't do this simply based on tasks, as time seems faster and slower based on different tasks. It also seems like such short spans of time are too short to rely on circadian rhythms. Is there some sort of feedback loop in brain neurons or is it biochemical? [link] [comments]  |
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| Is there currently any research into Psilocybin as a possible cure for Tinnitus? Posted: |
| Is there a method for determining the source of detected gravity waves? Posted: With the rumors about the possible detection of gravity waves, I was wondering if it will be possible to determine the location of the source of a signal. My understanding is that there are two detectors (for Advanced LIGO) so presumably the relative phase could determine the angle to a source relative to a line connecting the detectors. Is it possible that the time evolution of the signal could be compared to theory to estimate the redshift to obtain a distance, as well? That still leaves one dimension undetermined... [link] [comments]  |
| Posted: If scientists decide tomorrow that everything that was positive is now negative, and everything that was negative is positive is now negative would anything change? To clarify, I am just talking about charges. [link] [comments]  |
| [Physics] Would anything occur if a positron was forced to collide with a proton? Posted: Would they both annihilate each other? If so, what happens? Would the charge be conserved or the mass, considering that if they are both annihilated completely, the proton's extra mass wouldn't be conserved, but if only a small part of the proton is annihilated, the charge isn't conserved. [link] [comments]  |
| Posted: They successfully reached space indeed, but how did they know at what specific angle, trajectory and point reentry should be made in order to get back safely? Also, when we're talking about reentry, what margin of error that may result in either the module burning or being shot into outer space? Are we talking extremely low margins (+/- 0.something degrees) or is it more relaxed? [link] [comments]  |
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| How different are brains in "normal" people, and their structure, genetics and other things? Posted: By normal I mean someone without any known disorder, physical damage or whatever else that would affect it. I'm also curious if there is a vast difference in people one meets in regular life, that speak and act just like everyone else, but for some reason they have way more "brain power", and thus can process and understand things quicker and hold more things in their head and such (which is not easy to compare purely mentally, with your own mind / brains capabilities), and if their brains are statistically different from say, 80% of the population. I'm also curious if technology and society increases the differences in intelligence, and if it also changes the physical structure of the brain to have access to education, the right environment etc, and if this could increase even more over time. I hope this isn't a stupid question too. [link] [comments]  |
| What happens to volatile substances or compounds in vacuum? Posted: Does absence of atmosphere have any effect on volatility? [link] [comments]  |
| Is lung expansion the cause or effect of breathing? Posted: Do our lungs expand to create a vacuum and pull in air (active) or do they expand simply to accommodate the incoming air (passive)? [link] [comments]  |
| Is Tetrahydrocannabinol (THC) an alcohol? Posted: |
| Why is the speed of light sometimes referred to as the universal speed limit? Posted: I have seen this phrase many time, and I am curious as to why? With enough propulsion couldn't something be accelerated past the speed of light? [link] [comments]  |
| Is there a maximum acceleration of an object? Posted: Just like an object cannot go faster than the speed of light, is there some acceleration an object cannot go over? [link] [comments]  |
| Why can't helicopters fly at extreme altitudes but jets can? What's the difference between the two? Posted: |
| Getting total annual rainfall or "wetness" in some form for Australia? Posted: I am trying to find some data on the total annual and monthly rainfall for all of Australia and the total annual rainfall for all of Australia for each state and territory. I know that that is not really practical as they don't measure rainfall everywhere at once but is there a way I could some form of data like this that just show the overall "wetness" in some way or another? [link] [comments]  |
| Posted: Is there such a thing as an inverse of the placebo effect? How extensively has this been studied? What I'm asking is how much people's negative expectations can actually reduce the efficacy of a drug. And if there's a term for this. I'm not asking about the nocebo effect, in which people report negative effects from an inert substance. I know that negative attitudes can impact overall treatment outcomes, but how extensively has this been studied at the drug level? For example, say Drug X reliably reduces blood pressure in the general population. Is there any evidence that people who think, "Drugs don't work on me," will not see this same reduction? (My example focuses on blood pressure because it is objectively measurable. I don't doubt that this happens for more subjective problems, like pain management.) [link] [comments]  |
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