How do we know the actual wavelength of light originating from the cluster of galaxies that are receding away from us when all we observe is red shifted light because of expansion? |
- How do we know the actual wavelength of light originating from the cluster of galaxies that are receding away from us when all we observe is red shifted light because of expansion?
- What’s the difference between lighter fluid like Zippo/Ronsol and kerosene?
- What happens to the food that “goes down the wrong pipe”?
- How does piezoelectricity work? (i.e. why are only certain crystals piezoelectric?)
- Why does water with 30°C feel rather cold while air with 30°C feels warm?
- How does molecular orbital in banding of lattice works?
- Is more expensive shampoo notably chemically different or having a measurably different effect?
- What do we now think caused the bottleneck in the human population ~70,000 years ago, if not the Lake Toba explosion?
- How can the UV index be 0, but there be light outside? Are you still suffering sun damage in such a case?
- When marine mammals have open cuts or wounds does the salt water sting for them?
- How do the mitochondria of sperm cells produce ATP (energy) without oxygen?
- People with more fat have more total blood volume. What happens to that blood as someone loses weight?
- Why does it feel like your pulse throbs more at or around cuts and stuff?
- How does the body know it's "full" and to stop eating?
- Does the power of radiation emitted by a star depend on the color, the radius, both or neither?
- Are Homo sapiens the only species that bury their dead? If so, do we know why?
- Why does the trait of skin color mix together into a shade rather than being one or the other, like eye color?
- It rains sulfuric acid on Venus. Is there a constant fog of sulfuric acid in the atmosphere, or occasional storm clouds of acid?
- Is there a mathematical formula for determining the temperature at which a given element will change to a different state of matter?
- Why were the diseases brought by the Europeans so deadly for the original Americans but not the other way around?
- Can pigs get/spread BSE type prion diseases ?
- I've linked an image of the climate over several thousand years. What is the huge warm period that appears before the Roman warm period? Also, where is our climate today in relation to this graph?
| Posted: 06 Dec 2019 11:18 AM PST |
| What’s the difference between lighter fluid like Zippo/Ronsol and kerosene? Posted: 06 Dec 2019 08:19 PM PST As title, I'm trying to see what I can use instead of Ronsol that will be just as easily ignitable, because I got this super cheap fluid for barbecue coal starting, and its not refined enough to work in a zippo, does not ignite from the spark alone. So I'm wondering if getting pure kerosene is a good substitute for expensive zippo Ronsol lighter fluid. [link] [comments]  |
| What happens to the food that “goes down the wrong pipe”? Posted: 06 Dec 2019 11:19 PM PST Ya know. Like when you inhale your food/drink and you try to mask it with a restricted cough but you're dying inside until you get in private then lose a lung. Does that stuff just chill out in your lungs? [link] [comments]  |
| How does piezoelectricity work? (i.e. why are only certain crystals piezoelectric?) Posted: 06 Dec 2019 06:28 PM PST |
| Why does water with 30°C feel rather cold while air with 30°C feels warm? Posted: 06 Dec 2019 02:57 PM PST |
| How does molecular orbital in banding of lattice works? Posted: 06 Dec 2019 09:49 PM PST Why is there a banding of molecular orbitals in compound? I understand there are multiple molecular orbital interfering but given how they are the same molecule with same atomic orbital shouldn't it be multiple molecular orbital at same energy level?Like all sigma bonds are on one level and anti sigma are one level sharply? Also, Is the conductive band in metal is at bonding molecular orbital or valence orbital is a antibonding orbital to explain the over lapping of the conductive band and valence band? And is the conductive band always empty? I mean if the molecular orbital of the conductive band has a lower energy level then than the valence band, then there should be electron sitting in there even when there is no electricity passing through right? [link] [comments]  |
| Is more expensive shampoo notably chemically different or having a measurably different effect? Posted: 06 Dec 2019 04:22 PM PST I accidentally used my wife's obscenely expensive shampoo yesterday. My hair feels no different, I'm a simple man and I feel like there is no difference other than personal preference, am I right? What processes or effects, if any, is my wife paying for? [link] [comments]  |
| Posted: 06 Dec 2019 02:36 PM PST I read that recent evidence suggests that the global effects of the Lake Toba eruption were not actually as huge as previously thought, and it is unlikely that this was the cause for the bottleneck in human population around that time. If the eruption wasn't the cause, what was? [link] [comments]  |
| Posted: 06 Dec 2019 04:09 PM PST Hi, So I am confused. The UV index where I am often says 0 during the winter, yet it is still light out. Does that mean that you will still suffer sun damage over time? Even if it's an uv index of 0? Thanks [link] [comments]  |
| When marine mammals have open cuts or wounds does the salt water sting for them? Posted: 06 Dec 2019 10:06 AM PST I asked this in /r/NoStupidQuestions last night and got no answers so I decided to put it up here; I don't think I broke any rules... [link] [comments]  |
| How do the mitochondria of sperm cells produce ATP (energy) without oxygen? Posted: 06 Dec 2019 02:47 PM PST |
| Posted: 06 Dec 2019 12:56 PM PST |
| Why does it feel like your pulse throbs more at or around cuts and stuff? Posted: 06 Dec 2019 04:11 PM PST |
| How does the body know it's "full" and to stop eating? Posted: 06 Dec 2019 09:38 AM PST Does it do it by volume? Weight, or perhaps caloric content? [link] [comments]  |
| Does the power of radiation emitted by a star depend on the color, the radius, both or neither? Posted: 06 Dec 2019 10:23 AM PST Color depends on the temperature so the power depends on both? [link] [comments]  |
| Are Homo sapiens the only species that bury their dead? If so, do we know why? Posted: 06 Dec 2019 01:09 PM PST |
| Posted: 06 Dec 2019 09:38 AM PST |
| Posted: 06 Dec 2019 10:24 AM PST Could you occasionally use an acid proof umbrella or would you constantly require an acid proof suit if you were in the upper atmosphere? If you had a floating habitat high enough in the atmosphere to have a survivable temperature, could you walk around unprotected with an oxygen mask? [link] [comments]  |
| Posted: 06 Dec 2019 12:24 PM PST This question is hard to quantify, but I will try my best. I'm looking for a real mathematical formula that can be used to determine the temperatures that any given element need to be in to be in each of the four states of matter (Solid, liquid, gas, and plasma). For example, I want to know at what temperature water (not an element, I know) turns into a solid from a liquid in degrees of Celsius, I already know this, but I want to do that using a math formula, and that I do not know. Further from that, I'd like to use that formula to discover what temperature that would turn from water to steam, and even further, what point it becomes plasma. I've been trying to look for this formula online, but that has proved fruitless, and it may be a sad fact that it doesn't exist, but I'm willing to hold out and hope it's a real thing, and that you at Ask Science know of it. [link] [comments]  |
| Posted: 06 Dec 2019 08:16 AM PST Basically what the title says: is there a reason there were no diseases in the Americas (or Australia for that matter) that ended up being super deadly for the Europeans? By going to these continents could they have also brought back some kind of plague v.2? [link] [comments]  |
| Can pigs get/spread BSE type prion diseases ? Posted: 06 Dec 2019 10:18 AM PST From what I've read, pigs are thought to pose no risk in terms of prion diseases and so the stricter standards applied to beef and lamb are not applied to them. Is this safe? Do we not need to worry about prion diseases from pork, and why don't/do we? what makes pork different, if anything? [link] [comments]  |
| Posted: 06 Dec 2019 01:13 PM PST |
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