If the nuclear fusion cycle of a star ends at iron, how do heavier elements get made? |
- If the nuclear fusion cycle of a star ends at iron, how do heavier elements get made?
- Is the amount of time an organism takes to achieve sexual maturity proportional to its lifespan?
- How exactly do we get more stamina?
- What (as far as we know) is the physical mechanism which allows us to "see" our dreams?
- What is the inside of Europa like?
- Why does lead absorb radiation so well? Do other materials do the same?
- Why do fluffy blankets not seem as cold to the touch as bed sheets when they been in the same temperature room?
- Why is Nuclear Decay a probabilistic event? Are there any environmental influences that can affect the half life of an isotope or is it an intrinsic property?
- If every land and water animal disappeared at the same time from the Earth, would that have an effect on our orbit since the total mass would decrease?
- Was every desert once a body of water?
- What are those curvy distortions in the air above a hot stove?
- How do self-adhesive/cohesive bandages work? Why do they stick to themselves but not to skin, etc.?
- How does the immune system tell "bad" antigens apart from "harmless" antigens?
- Has nuclear weapons testing had any appreciable effect on the planet’s background radiation and/or surface temperature?
- Is there an upper limit to the size of a black hole?
- How is the best before date calculated on food?
- If binary star systems are common, are there scenarios in which one will expire faster and turn into a black hole?
- When talking about climate change, the argument against it's human cause is often that the models regarding it are not validated. What does this actually mean, is it entirely true, and what other things should laymen know about model validation?
- Suppose we have a computer program randomly choosing 6 digit number. What is the probability that this program will choose a number which 3 first and 3 last digits are the same (e.g. 203203, 100100, 888888)?
- Can ethylmercury methylate to methylmercury in the body?
- Does glycogen require insulin to be used?
- How is the “habitable zone” of a star calculated?
| If the nuclear fusion cycle of a star ends at iron, how do heavier elements get made? Posted: 19 Apr 2019 05:08 PM PDT |
| Is the amount of time an organism takes to achieve sexual maturity proportional to its lifespan? Posted: 19 Apr 2019 09:36 PM PDT That may be a weird way to pose the question, but do most species achieve sexual maturity the same amount through their lifespan (e.g. humans take 20 years in an 80 year lifespan and some species with a 100 year lifespan takes 25 and another species with a lifespan of 4 years takes only 1 year)? Or does it change depending on the species (humans achieve sexual maturity after 20 years in an 80 year life span, but some species with a 100 year lifespan takes 2 years and another species with a lifespan of 4 years takes 3)? If it's nothing set, are there any trends? Why do these trends occur? And if it's completely random, why? Do different organisms take different amounts of time because they have different needs evolutionarily? Thanks in advance! Edit: said "sexual maturity" because I didn't think "maturity" was a quantifiable term. If it is, that's what I meant [link] [comments]  |
| How exactly do we get more stamina? Posted: 19 Apr 2019 02:52 PM PDT So when we workout and get muscles we can increase our strength. that's simple. But how are we getting more stamina? What change occurs in our bodies that gives us ability to for example run longer. Whats the difference between gaining strength and stamina. How is it different. [link] [comments]  |
| What (as far as we know) is the physical mechanism which allows us to "see" our dreams? Posted: 19 Apr 2019 03:18 PM PDT If, to oversimplify, we see normally from light hitting our eye and processing in the brain of this sensory info, then what is the "light that illuminates our dreams," so to speak? How can we "see?" [link] [comments]  |
| What is the inside of Europa like? Posted: 20 Apr 2019 03:18 AM PDT I know the core is heated due to gravitational friction with Jupiter, but does the liquid water ocean touch the ice shell? What temperature is the water? [link] [comments]  |
| Why does lead absorb radiation so well? Do other materials do the same? Posted: 20 Apr 2019 04:12 AM PDT |
| Posted: 20 Apr 2019 07:01 AM PDT |
| Posted: 20 Apr 2019 12:58 AM PDT |
| Posted: 20 Apr 2019 07:30 AM PDT |
| Was every desert once a body of water? Posted: 19 Apr 2019 03:47 PM PDT I know a lot of fish fossils and such have been found deserts and such, but is every desert the result of a past body of water? If so, is the sand in deserts made of microscopic shell fragments like ocean sand is, or is it more granulated rock? [link] [comments]  |
| What are those curvy distortions in the air above a hot stove? Posted: 19 Apr 2019 10:59 PM PDT |
| How do self-adhesive/cohesive bandages work? Why do they stick to themselves but not to skin, etc.? Posted: 19 Apr 2019 04:01 PM PDT |
| How does the immune system tell "bad" antigens apart from "harmless" antigens? Posted: 20 Apr 2019 04:17 AM PDT If there isn't a specific mechanism behind that, why isn't the immune system going crazy on *everything* it ever comes in touch with? [link] [comments]  |
| Posted: 20 Apr 2019 12:28 AM PDT In the 20th century, over 2000 nuclear bombs were detonated in unpopulated areas. We know that the bombs in Nagasaki and Fukushima left many people who were not in the immediate fallout to suffer (and often die) from radiation sickness and terrible burns. As the test sites were far away from human habitats (namely the Pacific Ocean and depopulated Kazakhstan) my question is regarding how the blasts would have dissipated across the planet and its atmosphere. Did they contribute to global warming (knowing that the blasts release immense amounts of heat) or is the effect negligible compared to the proliferation of fossil fuel use. [link] [comments]  |
| Is there an upper limit to the size of a black hole? Posted: 19 Apr 2019 06:04 PM PDT This article states
I'm a little stuck on "in the age of the universe". Based on this, does that mean that that limit will increase or decrease over time? If it means that it will increase over time, is there something else that prevents it from getting bigger? The biggest galaxy is about 1014 solar masses. What could/would happen if that entire galaxy collapsed into a black hole? Is it possible that the Big Bang was the result of a similar collapse of matter and spacetime on a universal level like a black hole is on a stellar level? [link] [comments]  |
| How is the best before date calculated on food? Posted: 20 Apr 2019 01:05 AM PDT |
| Posted: 20 Apr 2019 12:45 AM PDT If so, what effects if any does this have on the remaining star? [link] [comments]  |
| Posted: 19 Apr 2019 04:05 PM PDT This question comes from a conversation with my dad. He has a doctorate in electrical engineering, so he isn't by any stretch uneducated, and I genuinely don't completely grasp what he means by this. I figured AskScience would be a good resource to learn a bit about it! Thanks! [link] [comments]  |
| Posted: 19 Apr 2019 03:08 PM PDT |
| Can ethylmercury methylate to methylmercury in the body? Posted: 19 Apr 2019 10:27 PM PDT |
| Does glycogen require insulin to be used? Posted: 19 Apr 2019 04:21 PM PDT I know muscles store glycogen for release during exercise. But when the glycogen is actually released, does it go into the booodstream (and then into cells using insulin) or is it broken down into glucose inside the cell? Thanks [link] [comments]  |
| How is the “habitable zone” of a star calculated? Posted: 19 Apr 2019 05:22 PM PDT |
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