Do terrestrial fusion reactions produce neutrinos? |
- Do terrestrial fusion reactions produce neutrinos?
- Would we ever run out of hydrogen to power fusion reactors?
- What are giant mushrooms like?
- How true is the statement, "Beer before liquor never been sicker, liquor before beer you're in the clear"?
- Why is using nitrous oxide while giving birth in a hospital a new thing?
- What does not emit electromagnetic radiation?
- Why do wine and whisky makers use oak?
- Is there a reason we can't just build an incredibly long tube to get liquids such as water or fuel into space?
- What differs different textures on molecualr/atomic level?
- How did the "different parts of the tongue sense different tastes" myth start? Did any actual scientists believe this?
- Why do some beer bellies feel firm if they're caused by extra fat? Why aren't they soft and squishy like fatty tissue in other areas of the body?
- Does the 5 mn Km difference between earth's aphelion and perihelion around the sun mean that the summers are more intense in the Southern Hemisphere?
- Can you become addicted to a drug if you are unaware you're taking it?
- Do my pets recognize me as the same person in every encounter with me?
- How much of an influence would the tides have had on the formation of life on Earth?
- Will rotation of a smooth object change the trajectory when dropped?
- Why have most modern cars adapted an even number of cylinders?
- Do the heavier elements that make up the Earth come from one specific supernova?
- If you visited a random star, how could you quickly determine if there are planets orbiting it?
- How are we able to tell the difference between a light source and an object reflecting light?
- Why does there appear to be certain spots on the moon that reflect light much more drastically than the rest?
- Does the universe have a net charge?
- Do photons have infinite momentum?
| Do terrestrial fusion reactions produce neutrinos? Posted: 26 Nov 2015 01:36 AM PST We all know that the Sun produces neutrinos. That's from proto-proton fusion: p+ + p+ → 2 H + e+ + ve Do "terrestrial" fusion reactions such as D-T, or D-D also generate neutrinos? I ask, because none of the reactions listed here show any neutrino products. If the neutrinos have simply been missed out on that Wikipedia page, can Reddit suggest where I could find more complete versions. [link] [4 comments]  |
| Would we ever run out of hydrogen to power fusion reactors? Posted: 25 Nov 2015 07:39 AM PST Would hydrogen be considered a non-renewable resource like coal, fossil fuels, etc. if we ever got reliable fusion reactors up and running? [link] [634 comments]  |
| What are giant mushrooms like? Posted: 25 Nov 2015 10:59 PM PST So I read an article stating that the Earth used to be covered in mushrooms as tall as 24 feet. I am talking about above-ground portions of mushrooms here, not like that one underground fungus that covers a whole forest. I've also seen photos of mushrooms that are a few feet tall, maybe even up to 6 feet. So my question is, what are they like? Are they woodier than normal mushrooms to support the extra weight or are they still soft and spongy? Are any internal features larger than in normal mushrooms or are there just more of them? What would be the quantity of spores released and are they bigger as well or still microscopic? [link] [15 comments]  |
| Posted: 26 Nov 2015 12:21 AM PST i agree to it being anecdotal, but im wondering if there is an advantage to one physiologically.. [link] [46 comments]  |
| Why is using nitrous oxide while giving birth in a hospital a new thing? Posted: 25 Nov 2015 08:53 PM PST In this article they talk about how one hospital in Portland, OR is now offering expecting mothers nitrous oxide as an alternative to an epidural during delivery. Why is this a new practice? It's not like nitrous is a new concept for relaxing and relieving pain during a medical procedure. Thanks in advance for any answers! [link] [42 comments]  |
| What does not emit electromagnetic radiation? Posted: 26 Nov 2015 03:31 AM PST My remote sensing textbook states "With the exception of objects at absolute zero, all objects emit electromagnetic radiation." I understand that an object doesn't have to emit it's own radiation, it can reflect another objects radiation. So what are the processes that cause electromagnetic radiation to be emitted? Wha are objects that do not emit their own radiation? [link] [4 comments]  |
| Why do wine and whisky makers use oak? Posted: 26 Nov 2015 05:16 AM PST I understand that there are properties(chemical or porous or whatnot) in oak that are preferable for the flavor of the product, but what are they exactly? And does any other wood have similar properties or do all other wood have some thing about them that prohibits their use? [link] [3 comments]  |
| Posted: 25 Nov 2015 08:34 PM PST It seems to me like that would cut costs dramatically if you were able to build something long and strong enough. I imagine The issue is building something with both the length AND the strength to accomplish the task. Or is there another reason? [link] [24 comments]  |
| What differs different textures on molecualr/atomic level? Posted: 26 Nov 2015 05:31 AM PST |
| Posted: 25 Nov 2015 06:28 PM PST |
| Posted: 26 Nov 2015 12:01 AM PST Okay, so odd question, I know. But sometimes when a man gets a beer belly, it can feel kind of firm, like the belly of a pregnant woman. I searched a little online for why, but all I could find were "causes of beer bellies" which, is obviously extra calories leading to extra fat. What I want to know is why the beer bellies are firm instead of feeling soft and squishy like other fat. So why is that? [link] [2 comments]  |
| Posted: 25 Nov 2015 11:38 PM PST |
| Can you become addicted to a drug if you are unaware you're taking it? Posted: 25 Nov 2015 12:13 PM PST For example, I'll design a case study and explain my thoughts at the end: Let's say that I give a few friends blueberry muffins that are baked with cocaine every morning for a month. Now, these friends have absolutely 0 idea that I've laced their breakfast treats with an addictive drug. There's 0K degrees worth of evidence to support the fact that I've been doing this, even if they had the volition to search for why my muffins are so good. Now, after a month of feeding them cocaine laced muffins, I stop feeding them muffins altogether. My assumption is that although, cognitively, they aren't aware they are receiving the drug, the cocaine is still stimulating their systems and affecting their physiology. Here's where my question kicks in. If they've become addicted to this drug without their own cognitive knowledge of taking a drug, would they crave stimulants or blueberry muffins? EG: Since an addiction is a physiological response to substances being broken down at their chemical levels, Physiologically, eating a blueberry muffin would not cure withdrawl symptoms. However, since they had no knowledge of consuming an addictive drug, would their perception override the physiological effects? In essence, I'm asking if by using the placebo effect, you could get someone addicted to a non-addictive substance? Or would they begin to crave other stimulants like caffiene, etc. [link] [10 comments]  |
| Do my pets recognize me as the same person in every encounter with me? Posted: 25 Nov 2015 10:51 AM PST Or do they recognize me as being different depending on different types of behavior such as when feeding them or petting them? For example, we have a very neurotic cat who hides and when I try to get her and pick her up she hisses as me. I can bring her to one of her safe spots where she feels comfortable when I pet her and she will start purring. So, does she recognize me as different people in these instances or the same person? Or is it not that simple: for example, they perceive me as part of the environment as a whole and occasionally recognize patterns and react accordingly? This goes for any pets: dogs, cats, etc. Is the answer different depending on the species? I imagine a goldfish, for example, is not that sophisticated. [link] [8 comments]  |
| How much of an influence would the tides have had on the formation of life on Earth? Posted: 25 Nov 2015 07:53 PM PST I read a Scientific American Article that speculated the extreme tide cycles caused by Earth's disprortionately large moon would have had a major role in allowing DNA and RNA replication to occur in shallow tide pools. Essentially, would the Earth having such an uncommonly large satellite, relatively speaking, lend further credence to life being that much more rare in the universe? [link] [2 comments]  |
| Will rotation of a smooth object change the trajectory when dropped? Posted: 26 Nov 2015 05:30 AM PST Ok, so a coworker and I were having a discussion about the divots on golf balls, the bumps on basketballs, the fuzz on tennis balls, etc. based on a college experiment he did with aerodynamics. However, we came to a disagreement in the following Assumptions: I think that's it. Our hypotheses are that the rotation will and will not alter the trajectory (assuming, say 200 or so RPM) between us. Can someone help us understand which is correct and why? Thanks! [link] [2 comments]  |
| Why have most modern cars adapted an even number of cylinders? Posted: 26 Nov 2015 04:53 AM PST In-line 4, Boxer 4, straight 6, V6, V8, V10, V12, W12, W16.... Why have most engineers decided that an even number of cylinders in the engine is the way to go? Of course there are few exceptions (i.e. Duratec-ST) [link] [2 comments]  |
| Do the heavier elements that make up the Earth come from one specific supernova? Posted: 25 Nov 2015 06:12 AM PST If they are the product of several supernovas, can we trace back the general area they came from? [link] [11 comments]  |
| If you visited a random star, how could you quickly determine if there are planets orbiting it? Posted: 25 Nov 2015 11:54 PM PST Let's say you're a space tourist, zipping around the galaxy looking for interesting solar systems to visit. As you approach a star, what techniques could you use to ascertain whether there are planets orbiting it? As a space tourist with a short attention span, you're only going to spend a few hours studying the solar system before moving on to the next one. Since planets are small and dark compared to stars, with lots of space between them, would you even notice any of the planets? Put another way: how realistic is the Star Trek scenario in which moments after laying a course for a star system the Science Officer can report on the number of planets the star has and whether any of them are Earth-like? [link] [1 comment]  |
| How are we able to tell the difference between a light source and an object reflecting light? Posted: 25 Nov 2015 06:22 PM PST In my experience, light sources always look like light sources and lit up objects look like lit up objects, regardless of how bright their luminance. Why is this so? Am I incorrect in my assumption that we can always tell the difference between lights sources and illuminated objects? If so, in what situation could a light source be mistaken as an illuminated object not creating any light of its own? [link] [4 comments]  |
| Posted: 25 Nov 2015 11:17 PM PST I have recently been using my dads telescope to stargaze. Naturally, my instinct is to start with the moon since it is easier to find than most stars for the novice. I have noticed a couple spots that seem starkly more bright than the rest. I am looking at a full moon outside right now as I post this. It is November 26, 2015 at 1:07 am if that makes a difference. This may be the wrong sub but I didn't know where else to go and the things I have been reading made me feel inadequate and unsure that if they were even talking about the same simple thing I am experiencing. Ugh, sorry for all that text. Hopefully thanks in advance! Would post pix but I cant. [link] [2 comments]  |
| Does the universe have a net charge? Posted: 25 Nov 2015 08:34 PM PST Do we know if the universe has a net electric charge? What about other quantities that are normally conserved in our observations - color charge, spin, etc.? [link] [1 comment]  |
| Do photons have infinite momentum? Posted: 25 Nov 2015 03:10 PM PST Let's assume you have a box that was lined on the inside with perfect mirrors and is a perfect vacuum. If you could somehow get light inside of this box, would it bounce around forever? Consider a light sail. As I understand it, it works because each photon imparts some of it's momentum on the sail when it bounces off of it. However, the light continues to travel at the same velocity after it is reflected, which would seen to violate conservation of momentum. As light bounces around inside this mirror box, shouldn't it impart some momentum onto the box, slowly losing momentum over time? Since it continues to travel at the speed of light, where does this extra momentum come from? [link] [8 comments]  |
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