Are humans closer in relative size to the planck length or the entire observable universe? |
- Are humans closer in relative size to the planck length or the entire observable universe?
- When you boil water, does it ever get hotter than 100°C in the pot?
- Is there a theoretical limit to the number of chemical elements that could exist in the universe?
- Why isn't nuclear physics considered to be chemistry?
- Why is time measured in with 60 seconds/minutes and not 100?
- Why are hours, minutes and seconds as long as they are?
- Why does solar output fluctuate?
- Does Precession of the Earth Affect Climate?
- Do we have models of natural endothermic nuclear fusion?
- Are stars the only natural nuclear fusion users in the universe?
- What speed is room temperature?
- Why does wetting my finger causing it to have more friction?
- What's the limiting factor behind slug and snail size? Why don't we see land slugs and snails larger than 1 kg in weight?
- Is Albinism more prevalent in communities with lower melanin levels?
- How does a computer know when a "word" starts and finishes in binary ?
- Why is the radiation from Chernobyl and Fukushima so intense, when Uranium has a half life of billions of years? Shouldn't it be minimal?
- If space is a vacuum, how can it smell?
- Do Singularities "evaporate" or is the only thing that does disappear over time the Event Horizon?
- Is the electron transport chain made entirely of proteins?
- What was central and south-eastern South America like during the last glacial period?
| Are humans closer in relative size to the planck length or the entire observable universe? Posted: 05 Feb 2017 05:11 AM PST |
| When you boil water, does it ever get hotter than 100°C in the pot? Posted: 05 Feb 2017 06:01 AM PST |
| Is there a theoretical limit to the number of chemical elements that could exist in the universe? Posted: 04 Feb 2017 03:13 PM PST |
| Why isn't nuclear physics considered to be chemistry? Posted: 04 Feb 2017 05:13 PM PST |
| Why is time measured in with 60 seconds/minutes and not 100? Posted: 05 Feb 2017 07:29 AM PST |
| Why are hours, minutes and seconds as long as they are? Posted: 05 Feb 2017 06:00 AM PST We all know why a day is as long as it is, but what made some dudes decide that it should be split up into exactly 24 hours? And what made them decide to split every hour into 60 minutes and then every minute into 60 seconds? [link] [comments]  |
| Why does solar output fluctuate? Posted: 04 Feb 2017 02:59 PM PST I have been reading about prehistoric climate change and it seems that changing solar forcing has often been a very important factor. What causes these various increases and decreases in solar radiation? [link] [comments]  |
| Does Precession of the Earth Affect Climate? Posted: 04 Feb 2017 04:42 PM PST Since the Earth goes through a gyroscopic wobble that has a 2600 year period does this at all create climatic shifts or cycles that we could notice? I'd be curious if there are trends that people have recorded or noticed because of this other than just what stars are in what point of the sky. [link] [comments]  |
| Do we have models of natural endothermic nuclear fusion? Posted: 05 Feb 2017 06:25 AM PST I seen charts explaining how different isotopes decay and into which isotopes, and also different fusion reactions (for example how carbon is created via triple-alpha process.) And it seems like we have very accurate knowledge how all of that works. But what I have not seen is how elements heavier than nickel are created in a supernova. Are there even theories on how exactly this happened or is it predicted to be compleatly chaotic? What im looking for is like for example: 12 C + 68 Zn + Energy = 80 Kr And how big portion of 80 Kr we find in nature is created via this example process (that I dont know if it exist)? [link] [comments]  |
| Are stars the only natural nuclear fusion users in the universe? Posted: 04 Feb 2017 10:13 AM PST |
| What speed is room temperature? Posted: 05 Feb 2017 05:50 AM PST As we all know, temperature is the average speed of particles. The higher the temperature, the higher that speed. If I understand correctly, that speed is not dependent upon the particle. 25° would be the same speed if we're talking about an iron lattice, or NaCl. Well then, what is the speed of particles that's called 25°? Also, 2 more related questions: is -273 theoretically a speed of 0? (I know that it can't actually be reached) If the temperature was infinity (again, theoretically), would the speed be Lightspeed? [link] [comments]  |
| Why does wetting my finger causing it to have more friction? Posted: 05 Feb 2017 03:08 AM PST |
| Posted: 05 Feb 2017 02:33 AM PST I know insects are limited by factors relating to their tracheal system but slugs and snails have lung that are functionally similar to terrestrial vertebrates. Is it because they're too soft and squishy? [link] [comments]  |
| Is Albinism more prevalent in communities with lower melanin levels? Posted: 05 Feb 2017 01:37 AM PST My question is whether communities that have lower melanin levels, e.g. Nordic populations, have a higher level of albinism than communities in the tropics, which have selected much higher melanin levels. I suppose my question boils down to whether the mutation of albinism is truly random, or whether it is in fact beneficial to survival and thus is more likely in areas in which low melanin is a benefit. [link] [comments]  |
| How does a computer know when a "word" starts and finishes in binary ? Posted: 04 Feb 2017 07:16 PM PST Let's take the binary string 11011100001 How does the computer know if it is only one word (command), or two "1101" and "1100001", or three... [link] [comments]  |
| Posted: 04 Feb 2017 10:18 AM PST |
| If space is a vacuum, how can it smell? Posted: 05 Feb 2017 01:55 AM PST Chris Hadfield said space smells like brimstone. How can a smell exist if space has no particles? [link] [comments]  |
| Do Singularities "evaporate" or is the only thing that does disappear over time the Event Horizon? Posted: 04 Feb 2017 03:54 PM PST I've been piecing together information based on an idea and I reached a stumbling point based on several videos and various written information on the topic. In them, the people explaining it seem to state that the Singularity and the Event Horizon of a Black Hole are separate in terms of what occurs in the normal lifetime of the object, but then they go on to it as a collective object and that the "Black Hole" itself evaporates overtime. I've seen the evaporation described as the Event Horizon being a curved line with one particle on one side and another particle on the other, with one entering the Singularity and the other escaping as an X-ray or similar type of escaping "object" as the evaporation effect. Wouldn't that mean that the Singularity itself is still intact with all the matter it's collected over time in whatever location it's currently at, because while some particles are being expelled other particles are being collected inside the Singularity. Or does the Singularity eventually actually have to burn through the matter that's been collected when it's no longer able to collect more, so eventually it'll convert all of its captured matter into radiation and the Singularity itself dissipates as well? My confusion stems from the fact that no one seems to give a clear answer to that. At the point they discuss the "evaporation" of the Black Hole they refer to it as a collective unit where as before they made a point to differentiate between the Singularity itself and the actual Event Horizon surrounding it. Is it just because we don't fully understand the mechanics behind it, so when it "evaporates", as Hawking and his team discovered, that's where our knowledge ends because we can't actually mathematically predict what happens so we just assume they both disappear when it's not known? [link] [comments]  |
| Is the electron transport chain made entirely of proteins? Posted: 04 Feb 2017 12:22 PM PST Are all the molecules in the chain proteins? Wikipedia states "An electron transport chain (ETC) is a series of compounds" and goes on to say... "The molecules of the chain include peptides, enzymes (which are proteins or protein complexes), and others" What does it mean by "others"? Are all the "others" proteins too? [link] [comments]  |
| What was central and south-eastern South America like during the last glacial period? Posted: 04 Feb 2017 06:11 AM PST Is it safe to assume that it regularly snowed in what is now central Brazil? What about the Atlantic Forest, how did it do? Were there temperate forests? [link] [comments]  |
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