How did a population of landlocked seals manage to establish itself in lake Baikal, of all places, at an altitude of 450 m and several hundred kilometers from the Nearest coastline??? |
- How did a population of landlocked seals manage to establish itself in lake Baikal, of all places, at an altitude of 450 m and several hundred kilometers from the Nearest coastline???
- Does the use of microwave ovens distort chemical structures in foods resulting in toxic or otherwise unhealthy chemicals?
- Is there a maximum brightness? Is there a limit to the number of photons in a given area?
- Why does persons fat content influence how much they are affected by alcohol?
- Why do we assume the core of a black hole has a singularity in it?
- What's wrong with the original definition of the gram?
- Does high speed space debris ever strike the International Space Station or cause any problems?
- What was the main function of T-rex arms?
- How can a real particle have negative energy?
- What's the difference between soap and detergent?
- Have cats changed at all since becoming house cats, like how dogs have, or have they always been exactly like the way they are now?
- Are the other four quarks found much in the universe?
- Is it easier for temperature to rise the more it gets hotter and colder the more it gets lower?
- Are galaxies actually moving away from each other at superluminal speeds?
- Will a tank full of water weigh the same if you add a whale to the same tank?
- Is BPA or other dangerous plastisers found in HDPE?
- How does auto adjusting focus "know" when focus is correct?
- Assuming they weren't bitten, could a predator safely consume an animal that produces venom?
- Is there a scientific reason why PET is #1, HDPE #2, PVC #3... or were the numbers arbitrarily assigned?
- What are the chances that an electron belonging to an atom on the other side of the planet is in the room I am currently in. Is it something that I should expect to be the case?
- Is having a higher bandwidth get you to hit your data cap faster?
| Posted: 18 Nov 2017 06:04 PM PST I'm familiar with other landlocked seal populations, such as those in Lac des Loups marins in northern Québec, but those are right next to the coast and roughly at sea-level too .... easily explained by isostatic rebound. But Baikal??? The Baikal critters are perched way up at almost half a km altitude and almost 1500 km from the closest coast (the Okhotsk sea). I don't get it... And if it happened in Baikal, why not in other large freshwater lakes such as lake Superior, Great Bear lake EDIT: thanks to /u/Gsdthrowaway1 for bringing the lake Ladoga seals to my attention. But these are still landlocked seals in a place that makes sense : a low-lying lake in a flat area prone to isostatic rebound within spitting distance of the sea. [link] [comments]  |
| Posted: 18 Nov 2017 08:18 AM PST |
| Is there a maximum brightness? Is there a limit to the number of photons in a given area? Posted: 18 Nov 2017 08:55 PM PST |
| Why does persons fat content influence how much they are affected by alcohol? Posted: 19 Nov 2017 02:24 AM PST Do the fat cells absorb the alcohol so they do not impact brain cells as much, or is the brain affected by how much alcohol has been absorbed by the rest of the body? [link] [comments]  |
| Why do we assume the core of a black hole has a singularity in it? Posted: 19 Nov 2017 03:05 AM PST How does it make sense that something can be infinitely dense, i.e. have 0 volume? I could understand it if a black hole was an object of finite but extreme density—then its escape velocity would still be stronger than the speed of light, but the laws of physics would still make sense at the core because space would not have infinite curvature there. But why do people say black holes have INFINITE density? [link] [comments]  |
| What's wrong with the original definition of the gram? Posted: 19 Nov 2017 02:09 AM PST According to Wikipedia, the gram was originally defined as the mass of a cubic centimeter of water, and then later redefined as one thousandth of the mass of a particular metallic object. I've heard this was due to the isotopes in water causing minute variations, but we have since become much more adept at measuring isotopic differences, and presently use water to define our temperature scales. Are there additional concerns preventing us from simply reverting to the original definition? [link] [comments]  |
| Does high speed space debris ever strike the International Space Station or cause any problems? Posted: 18 Nov 2017 10:06 PM PST I've heard space debris can travel at thousands of miles per hour or so I was just wondering if there ever collisions with astronauts in space vehicles. [link] [comments]  |
| What was the main function of T-rex arms? Posted: 19 Nov 2017 02:35 AM PST |
| How can a real particle have negative energy? Posted: 18 Nov 2017 07:46 PM PST Hi, I'm reading Stephen Hawkin's "Brief history of time". There's a chapter where he talks about black holes and I assume is the precursor to hawking radiation, but basically it explains that at the event horizon there are particle-antiparticle pairs being created, some escape into space (particles as radiation, antiparticles annihilate pretty soon after their escape), but whenever a particle falls into the black hole it reduces it's mass (instead of increasing it). Hawkins says "Normally, the energy of the particle is still positive, but the gravitational field inside a black hole is so strong that even a real particle can have negative energy there". [link] [comments]  |
| What's the difference between soap and detergent? Posted: 18 Nov 2017 08:15 PM PST I've often heard that many modern "soaps" are not really soap, but detergent. But, what's the actual difference? Any of the quick summaries I've read make them sound quite similar. About all I know is that detergent doesn't foam (but most commercial products add something to do that since people expect it). [link] [comments]  |
| Posted: 18 Nov 2017 07:53 PM PST |
| Are the other four quarks found much in the universe? Posted: 18 Nov 2017 10:16 AM PST Are the top, bottom, strange, and charm quarks found in large quantities in the universe? If so, where? If not, what is the possibility of new undiscovered quarks existing? [link] [comments]  |
| Is it easier for temperature to rise the more it gets hotter and colder the more it gets lower? Posted: 19 Nov 2017 02:51 AM PST |
| Are galaxies actually moving away from each other at superluminal speeds? Posted: 18 Nov 2017 10:55 PM PST Moreover, is time dilation actually factored in while accounting for the expansion of the universe? [link] [comments]  |
| Will a tank full of water weigh the same if you add a whale to the same tank? Posted: 18 Nov 2017 08:32 PM PST Hello people of the internet. My wife and I are having a discussion on the above question. I say the tank will get much heavier assuming that the water does not overflow from the addition of the whale, but I am not sure it will reflect the exact weight of the whale. My wife on the other hand believes the tank will either stay the same weight or become a little heavier since things are almost weightless in the water. Please settle this for us. [link] [comments]  |
| Is BPA or other dangerous plastisers found in HDPE? Posted: 19 Nov 2017 01:56 AM PST |
| How does auto adjusting focus "know" when focus is correct? Posted: 18 Nov 2017 05:38 AM PST With our eyes it makes sense, we focus on something and then our brain says "Ok, we are good here" so focus is done. How is that kind of "verification" achieved with automatic means? [link] [comments]  |
| Assuming they weren't bitten, could a predator safely consume an animal that produces venom? Posted: 18 Nov 2017 11:40 AM PST I'm of course referring only to animals that produce venom for bites or stings, not ones that are poisonous. I was just curious if there's much likelihood of an animal being envenomed just by eating the venomous prey assuming they weren't bitten or stung in the process of the attack. [link] [comments]  |
| Posted: 18 Nov 2017 08:28 AM PST Is there reasoning to the numbering or order of different resins in the ASTM Resin Code System? In other words, could it have been just as reasonable to have LDPE #1, PET #2... [link] [comments]  |
| Posted: 18 Nov 2017 10:20 PM PST As far as I know, there is no outer limit on where the electron of an atom actually is, so by that logic it is possible. But is it at all likely to be the case? [link] [comments]  |
| Is having a higher bandwidth get you to hit your data cap faster? Posted: 19 Nov 2017 02:11 AM PST |
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