What is the physical difference in the brain between an objectively intelligent person and an objectively stupid person? |
- What is the physical difference in the brain between an objectively intelligent person and an objectively stupid person?
- Why does paper turns transparent when i smear fat/oil over it?
- How would our understanding of physics (or more specifically E&M) change if we found a magnetic monopole?
- If the moon or a big asteroid were to crash directly into the earth, what would happen to the other side of the earth that didn't receive the impact?
- Was the theory of infinitesimals proven true?
- If visible light is photons, then is all electromagnetic radiation photons? If so, why does its wavelength give the photons certain properties (e.x. harmful to humans, visible, can pass through matter)?
- Are there any indications that there are elements beyond the 118 we have currently discovered or synthesized? If so, is there any indication that there is a finite number of elements, other than their increasingly short halflives?
- How holes and electrons in the diode gets back to their original position when it is turned off?
- [Physics] How is the sound of moving water created? Do different liquids have specific different "wet" sounds? What factors determine how do they sound like?
- Are we--and all multicellular life--just giant biological synergies between our cells?
- Why is sustained attention span limited to about 20 minutes?
- What the smallest movement that the human eye can detect? Could a human eye perceive 1.5 arc seconds of movement under ideal conditions? What could it detect?
- How does a spider retract its web?
- Is it possible for there to be tiny (let's say basketball sized) Suns or even tiny solar systems in the universe?
- Why are the pressure and volume of a gas inversely related while either one of their relationships with temperature is linear?
- Is there a way to accurately measure amounts of endorphins in the human brain?
- What variables produce colorful sunsets? Are beautiful sunsets predictable?
- What's the fastest growing tissue in the human body?
- Does boiling water by lowering atmospheric pressure sanitize water?
- Why are sympathetic chain ganglion (and associated nervous tissue) on the outside of the vertebrae, why don't they get the protection that the CNS gets?
- How did the pressure of earth's atmosphere during past eras compare to that of today?
- How do scientists statistically prove cause and effect?
- Would I float in wet cement?
| Posted: 24 Jul 2016 06:20 AM PDT Does it have to do with connections of neurons in the brain? [link] [comments]  |
| Why does paper turns transparent when i smear fat/oil over it? Posted: 24 Jul 2016 06:31 AM PDT |
| Posted: 23 Jul 2016 11:51 PM PDT |
| Posted: 24 Jul 2016 06:28 AM PDT Would people get launched right off the ground or something totally different? [link] [comments]  |
| Was the theory of infinitesimals proven true? Posted: 23 Jul 2016 10:07 PM PDT I understand that this concept is the building block of calculus, but was it simply an "almost true" concept used to understand calculus, or did it become a fundamental truth because of calculus? I could also be framing this question in a horrendously incorrect fashion, because I have only elementary mathematical education. [link] [comments]  |
| Posted: 23 Jul 2016 07:15 PM PDT |
| Posted: 23 Jul 2016 03:06 PM PDT As a layperson, I would assume that one could just continually add more protons and neutrons to continually make new elements, but I'm not sure about the physics or any limitations related to that. If I'm right, then I assume the only difficulty is stabilizing the samples long enough for a confirmation, as I know that the last few elements we synthesized had incredibly short halflives. Are there any OTHER limitations to the atomic number of an atom? Will the periodic table ever be done? And are there any ways to forcefully stabilize atoms that would allow us to push farther? [link] [comments]  |
| How holes and electrons in the diode gets back to their original position when it is turned off? Posted: 23 Jul 2016 08:56 PM PDT When diode is turned on the holes and electrons gets mixed that is the holes will also appear largely on the n side and electrons also appears on the p side but when turned off how electrons and holes get separated as p and n side with same as when it is not connected. Practicals explanation please [link] [comments]  |
| Posted: 24 Jul 2016 05:33 AM PDT Imagine a largish pool of water (or some other liquid) which is still and you submerge your palm in it and slosh it around a bit, making that wet noise. What exactly is making that? [link] [comments]  |
| Are we--and all multicellular life--just giant biological synergies between our cells? Posted: 24 Jul 2016 01:22 AM PDT I mean, there isn't really anything that makes our cells any more special than bacteria, as far as I'm aware. Is it possible that complex life just originated from a few cells suddenly finding out that it is easier to reproduce when attached to different cells? Edit: not even sure that synergy is the exact phrase I'm looking for, just couldn't be bothered to search for the right one. [link] [comments]  |
| Why is sustained attention span limited to about 20 minutes? Posted: 23 Jul 2016 01:15 PM PDT I've noticed it myself as well that it's so much harder to increase how long one can maintain peak concentration than to increase the intensity of said concentration. What happens at 20 minutes that most adults are limited to a 20 minute sustained attention span? [link] [comments]  |
| Posted: 23 Jul 2016 01:30 PM PDT I'm curious about the question of parallax in nearby stars. The parallax of the nearest visible star is 0.77 arc second. That means that every six months or so Alpha Centauri moves twice that (1.54 arc second) accross the sky relative to other stars close to it in the sky. An arc second is one part in 3600 of one degree. That seems really small. Six months is a long time. I don't know what "ideal" conditions for detecting movement are but I presume the time units are smaller than months. If I place two LEDs a meter apart and stand a kilometer away, moving one far enough to make a degree of movement across my field of vision means moving it 17m. That feels like it would be possible to detect - we can easily see a semi at that distance. Moving the LED enough to make 1.5 arc seconds of movement accross my field of view means moving it 7.5mm ((1.54*2*pi*1000m)/(360*3600)) that seems too small to detect. [link] [comments]  |
| How does a spider retract its web? Posted: 23 Jul 2016 02:12 PM PDT When a spiders retracts or climbs up a strand of its web. What happens to the web? What happens? Can't find anything that answers this clearly on the web (heh). [link] [comments]  |
| Posted: 23 Jul 2016 06:41 PM PDT I know they wouldn't be observable, so there's no definitive "yes there is" answer, but is there any reason there couldn't be a basketball sized sun? Perhaps even briefly (compared to larger Suns)? Based on current understanding. [link] [comments]  |
| Posted: 24 Jul 2016 06:09 AM PDT Also a related question: It seems like when the number of moles of a gas changes but both pressure and volume are not restricted, the pressure and volume will both change at the same rate. Is this correct? If so, is there an intuitive explanation for why this is the case? [link] [comments]  |
| Is there a way to accurately measure amounts of endorphins in the human brain? Posted: 24 Jul 2016 05:36 AM PDT Is there a way to accurately measure and quantify specific amounts of endorphins that are released in the human brain? Specifically, I am woundering about endorphins that are released from a painful or traumatic experiences, if that helps narrow anything down. I know one way to do this would be to use a PET machine, but are there other more accurate ways to measure this type of thing? [link] [comments]  |
| What variables produce colorful sunsets? Are beautiful sunsets predictable? Posted: 24 Jul 2016 05:29 AM PDT What variables produce colorful, dramatic sunsets? Are beautiful sunsets predictable the way rain or storms are? We seem to get nice ones after rain. Why is that? [link] [comments]  |
| What's the fastest growing tissue in the human body? Posted: 24 Jul 2016 05:23 AM PDT |
| Does boiling water by lowering atmospheric pressure sanitize water? Posted: 23 Jul 2016 01:56 PM PDT We all know that you can sanitize water by adding heat and boiling it. Does the same ring true if the boiling it caused by a lowered atmospheric pressure? [link] [comments]  |
| Posted: 24 Jul 2016 04:11 AM PDT |
| How did the pressure of earth's atmosphere during past eras compare to that of today? Posted: 24 Jul 2016 12:21 AM PDT A friend and I were wondering why aquatic mammals can grow so big, which led to the same question for dinosaurs. I had heard that ancient atmospheres were denser than our current atmosphere, but this seems to be something of a myth. Can anyone shed some light on how the earth's atmospheric pressure has changed over time? [link] [comments]  |
| How do scientists statistically prove cause and effect? Posted: 24 Jul 2016 02:56 AM PDT Is there some formula that proves all confounding variables are irrelevant and one particular direct variation between two variables proves cause and effect? If there isn't some clearly defined line, how much is "good enough" to claim cause and effect? [link] [comments]  |
| Posted: 24 Jul 2016 02:25 AM PDT Just trying to settle a debate I'm having at 4am. Roommate's convinced you'd sink to the bottom and can't swim/float up. [link] [comments]  |
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