Are there ways to find caves with no real entrances and how common are these caves? |
- Are there ways to find caves with no real entrances and how common are these caves?
- Does Psychopathy exist on a spectrum or is it a binary phenomena; you either are or aren't?
- What allows light to pass through clear solids like glass, but not through walls/trees etc?
- Does charging your phone slower, by connecting it to a pc by usb-a, makes the battery last longer than connecting directly into a outlet?
- How much, if at all, do other stars' heat and light affect the Earth?
- How do sturrup pumps achieve such high pressures (3000psi), while conventional pumps generally only go up to 260psi?
- How can anthropogenic climate change (global warming) cause the earth to dry up when more water becomes part of the hydrologic cycle as ice caps and glaciers melt?
- Is there a "maximum loudness"?
- Why does water vapor or steam rise (and not fall or just stay at the same level)?
- Approximately how much solar energy could be harnessed between the Tropics of Cancer and Capricorn?
- If higher spatial dimensions could be visualized, then would all of their axes be perpendicular to each other?
- Why are Mexicans half as likely to develop/die from cancer than US/Canadian citizens?
- Could the substance known as "atomic trampoline" be used as a shield for space craft or even body armour?
- Is it possible to melt wood?
- Why is it that when we rub wool on a balloon, the balloon becomes negatively charged and not vice-versa?
- In Pancreatic Islet Transplants, what is stopping the transplanted islets from being destroyed again?
- Is there a cap on human intelligence?
- Is the speed of sound directly proportional to density of the medium ? And if so, at how high density would sound travel faster than light ? If it's even possible.
- Why does a satellite stay at a constant speed?
- Why is tritium often used in elemental gaseous form instead of in compounds?
- How exactly does nuclear fallout work?
- Are there different constellations on Mars?
- Why aren't there lunar eclipses once a month?
| Are there ways to find caves with no real entrances and how common are these caves? Posted: 14 May 2017 08:22 PM PDT I just toured the Lewis and Clark Caverns today and it got me wondering about how many caves there must be on Earth that we don't know about simply because there is no entrance to them. Is there a way we can detect these caves and if so, are there estimates for how many there are on Earth? [link] [comments]  |
| Does Psychopathy exist on a spectrum or is it a binary phenomena; you either are or aren't? Posted: 14 May 2017 07:16 PM PDT I've been looking into a lot of work and articles and most of the literature just says that "Psycopaths are _" or "Psychopaths exhibit _." There is also more literature that says many psychopaths function within society without going as far as murder, but still can harm others. But I haven't seen too much on whether or not there is a spectrum of psychopathy; only that there is a checklist, or we can check brainwaves, etc. Can one be partially psychopathic? Just a little psychopathic? [link] [comments]  |
| What allows light to pass through clear solids like glass, but not through walls/trees etc? Posted: 14 May 2017 05:52 PM PDT |
| Posted: 14 May 2017 08:25 PM PDT |
| How much, if at all, do other stars' heat and light affect the Earth? Posted: 14 May 2017 08:15 PM PDT |
| Posted: 14 May 2017 05:36 PM PDT I want to know what mechanism is involved here. Generally, for PCP airguns, you need a specialized pump that enables the pressure to ratchet up to very high pressures of 2000 - 3000 psi. [link] [comments]  |
| Posted: 14 May 2017 05:14 PM PDT I thought that the earth was more dry than it is now during the last ice age when more water was trapped in ice caps and glaciers and wetter during times when there was no permanent ice. edit. I've seen predictions of the earth becoming drier with larger deserts due to climate change. [link] [comments]  |
| Is there a "maximum loudness"? Posted: 14 May 2017 07:52 PM PDT This may seem like a silly question, but I'm genuinely curious: what's the very loudest something can possibly be? Is there a cap? [link] [comments]  |
| Why does water vapor or steam rise (and not fall or just stay at the same level)? Posted: 15 May 2017 06:18 AM PDT When you boil water on a stove, you can the steam rise. If water vapor is just small droplets of water, why does it rise? And is this the same mechanism at work when water on the ocean surface evaporates to form water vapor in the air? [link] [comments]  |
| Approximately how much solar energy could be harnessed between the Tropics of Cancer and Capricorn? Posted: 15 May 2017 05:16 AM PDT |
| Posted: 14 May 2017 04:48 PM PDT If I were an N dimensional hyper-being with a protractor, and I measured the angle between ever pair of the axes of the N dimensions, would all of the angles be 90 degrees, or is there a more abstract notion of what it means to be perpendicular in higher dimensions? [link] [comments]  |
| Why are Mexicans half as likely to develop/die from cancer than US/Canadian citizens? Posted: 14 May 2017 08:42 PM PDT This question is based off 2012 statistics provided by the International Agency for the Research of Cancer http://www.cancerindex.org/Mexico It looks like the same is similar for other less-than-first-world countries. Is this reflective of reality or a product of dissimilar statistical sources? [link] [comments]  |
| Posted: 14 May 2017 01:15 PM PDT I'm talking about the substance made of several different elements in this gif [link] [comments]  |
| Posted: 14 May 2017 03:27 PM PDT Are there any conditions where you could heat up wood and turn it into some kind of "liquid wood"? [link] [comments]  |
| Posted: 15 May 2017 06:48 AM PDT I asked this question last time on a different subreddit, but the only reply so far stated that the answer was difficult to put simply. In any case, one of my friends while studying for IB asked me this, and I wondered the same thing. We were always told that when we rub wool on a balloon, the electrons will always go to the balloon instead of the wool. Why is this so? Why can't the wool, instead, take charges away from the balloon? What is the difference between the two in terms of molecular structure such that the wool will give away the electrons at most circumstances? [link] [comments]  |
| Posted: 15 May 2017 02:56 AM PDT I was reading an article about transplanting the Islets of Langerhans, this question popped in my head and I couldn't find an answer myself. [link] [comments]  |
| Is there a cap on human intelligence? Posted: 15 May 2017 06:04 AM PDT |
| Posted: 15 May 2017 02:01 AM PDT What is speed of sound in the densest thing ever possible ? [link] [comments]  |
| Why does a satellite stay at a constant speed? Posted: 14 May 2017 03:45 PM PDT Quick question about satellites in orbit: If you fire a projectile horizontally off a clip, the magnitude of its velocity will increase over time because a vertical component is slowly being added to the projectile's velocity. When it hits the ground, it will have both a sizable vertical component and horizontal component. Why does a satellite not gain this same vertical component like a projectile does? Isn't the only difference between the start of a satellite's orbit and the projectile in the above example that the satellite starts at a much greater horizontal velocity, which allows it to essentially outrun the earth's curvature? I feel like I am missing something basic here. Thanks for any help! [link] [comments]  |
| Why is tritium often used in elemental gaseous form instead of in compounds? Posted: 14 May 2017 07:46 PM PDT When tritium is used for its radioactivity, such as in glowing vials or exit signs, it always seems to be used in elemental, gaseous form. Why is this? Can't it escape very slowly even from totally sealed containers in that form? Why isn't tritiated water or some other compound that won't escape used instead? [link] [comments]  |
| How exactly does nuclear fallout work? Posted: 15 May 2017 02:42 AM PDT If another country wanted to bomb, say, San Fransisco, and I lived elsewhere in California at 4500+ feet above sea level, how would the bomb impact my surroundings? [link] [comments]  |
| Are there different constellations on Mars? Posted: 14 May 2017 06:33 PM PDT |
| Why aren't there lunar eclipses once a month? Posted: 14 May 2017 03:39 PM PDT My understanding is that lunar eclipses occur when the Earth gets in between the moon and the sun. Shouldn't this always happen once a month, when the moon is on the opposite side of the Earth from the sun? [link] [comments]  |
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