From how high up can you dive before water may as well be concrete? |
- From how high up can you dive before water may as well be concrete?
- Why is it believed black holes preserve mass, charge and angular momentum, but not baryon number, weak isospin and lepton number?
- How are the ideas of particles being vibrations in fields vs. being made of vibrating strings (string theory and quantum mechanics) united?
- Is the erosion of the Dead Sea in the Neolithic Levant the earliest known example of human impact on geological processes?
- What determines left/right handedness in humans? Do other animals have a "dominant side"?
- Why can't we use the "Infinite primes proof" to continuously find new primes?
- How does lightning find the path of least resistance?
- Why must we use radians (and not degrees) in calculus?
- Why does space still appear to be dark, although it is full of bright stars?
- Why are you at risk of getting a blood clot from long car/plane trips and from bed rest after surgery but not when sleeping 8+ hours?
- Do gravity waves fade as they travel across space?
- Eye drops can cause serious harm if ingested. Why is a substance that's safe to use on the eyes so dangerous if swallowed?
- Did the first milliseconds of the universe expand faster than the speed of light?
- Why do fevers cause weird dreams?
- Why aren't there more huge canyons like the grand canyon?
- Do we have any idea if ancient peoples had the sames types and rates of cancer that we experience now?
- How do we know things in space are spinning if there is no single point of reference?
- On a planet like Mars, a planet with two moons, is it possible to have a double lunar eclipse? Or an eclipse where one moon blocks out another? What would that look like?
- Why can't the Melipona Bee that pollinates vanilla be introduced to other parts of the world?
- When ancient explorers traveled the sea by reading the stars, did it actually work or was it some placebo effect?
| From how high up can you dive before water may as well be concrete? Posted: 28 Jun 2017 07:18 PM PDT Diving is supposed to mitigate the resistance entering water, so would it be significantly higher than the point where, say, a belly flop has the effect of hitting concrete? Would it shatter your hands and wrists? [link] [comments]  |
| Posted: 28 Jun 2017 06:55 PM PDT |
| Posted: 29 Jun 2017 03:38 AM PDT |
| Posted: 28 Jun 2017 09:47 PM PDT I came across this paper:
The authors state that humans were responsible for the increased erosion of the Dead Sea.
A few articles state that this constitutes the earliest evidence of humans influencing geological process. Is this true? Are there any other examples of early environmental modification? (originally posted this in r/anthropology, but no response so far) [link] [comments]  |
| What determines left/right handedness in humans? Do other animals have a "dominant side"? Posted: 29 Jun 2017 04:54 AM PDT |
| Why can't we use the "Infinite primes proof" to continuously find new primes? Posted: 28 Jun 2017 08:48 AM PDT In the infinite primes proof, you multiply all of the primes together and add 1, which creates a new prime. Why can we not use this method with the primes that we currently know to find new primes? People always talk about "finding" new primes, but it seems like using the method above would result in a guaranteed new prime number. [link] [comments]  |
| How does lightning find the path of least resistance? Posted: 29 Jun 2017 04:13 AM PDT Hello there! I'd like to know why lighting chooses the path it chooses and not another one... I've heard it chooses the one with least resistance, but what exactly does that mean? Highest conductivity? And how does it know that before going through it Thank you very much and please excuse the shitty formatting.... Edit: Small mistakes [link] [comments]  |
| Why must we use radians (and not degrees) in calculus? Posted: 29 Jun 2017 05:14 AM PDT |
| Why does space still appear to be dark, although it is full of bright stars? Posted: 29 Jun 2017 03:27 AM PDT |
| Posted: 28 Jun 2017 06:39 PM PDT |
| Do gravity waves fade as they travel across space? Posted: 29 Jun 2017 03:24 AM PDT |
| Posted: 28 Jun 2017 04:09 PM PDT There have been multiple cases of people being hospitalized after ingesting eye drops, particularly Visine. The perpetrators of these poisonings often believed that taking the eye drops internally would cause relatively harmless nausea or vomiting, but the actual effects can be much more severe. What makes a substance that's safe for a sensitive part of the body like the eyes so dangerous when swallowed? [link] [comments]  |
| Did the first milliseconds of the universe expand faster than the speed of light? Posted: 29 Jun 2017 01:06 AM PDT |
| Why do fevers cause weird dreams? Posted: 28 Jun 2017 02:31 PM PDT |
| Why aren't there more huge canyons like the grand canyon? Posted: 28 Jun 2017 03:23 PM PDT |
| Posted: 28 Jun 2017 01:05 PM PDT |
| How do we know things in space are spinning if there is no single point of reference? Posted: 28 Jun 2017 06:52 PM PDT Also, would a star spinning so fast that its shape becomes non spherical appear spherical to an observer who was orbiting the star at the same rate which it was spinning? [link] [comments]  |
| Posted: 28 Jun 2017 07:38 PM PDT |
| Why can't the Melipona Bee that pollinates vanilla be introduced to other parts of the world? Posted: 28 Jun 2017 07:29 PM PDT So I've been reading about how there is a natural vanilla shortage, and that it's an extremely labor intensive crop because they have to be hand pollinated at a very specific time. But the only natural pollinator is the melipona bee. I'm wondering why people don't try to introduce this bee to madagascar (the leading producer of vanilla)? Wouldn't that make things cheaper and easier? [link] [comments]  |
| Posted: 28 Jun 2017 10:03 PM PDT |
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