How did scientists know the first astronauts’ spacesuits would withstand the pressure differences in space and fully protect the astronauts inside? |
- How did scientists know the first astronauts’ spacesuits would withstand the pressure differences in space and fully protect the astronauts inside?
- What is the base temperature in space?
- How do animals with fur and researchers in the arctic get vitamin D?
- When viewing macro images of insects they seem extremely clean. Do insects clean themselves thoroughly throughout the day?
- When people are listening to loud music through headphones, why do other people only hear the drums/beat of the music?
- How are there skeletons left over after a volcano eruption buries a town in molten lava? Wouldn't the lava be hot enough to disintegrate bone matter?
- Why do smells smell good or bad?
- Why do excited electrons hesitate to fall back down?
- How does a nerve gas mask differ from other gas mask?
- Are there any animals who are known to travel somewhere to die?
- Are the products of burning tobacco especially toxic comparably?
- Do animals know when to stop eating or eat less since their prey can't reproduce quick enough?
- What damage do amphetamines (including the controlled substance methamphetamine) do to the body, what causes death in user/abuser and how long does such person live since beginning of abuse?
- What type of iron oxide forms on the surface of steel parts during tempering?
- Do animals recognize their own “voices” (barks, meows, growls, etc.) when they hear them on recordings?
- How different is the human species compared to what it used to be like 9000 years ago?
- Can I electroplate with 925 silver? Or does the anode have to be 999 silver?
- Why have teen birth rates declined sharply across every state in the US over the past 30 years?
- Were the effects of being exposed to a vacuum ever explored scientifically by putting animals in a vacuum chamber?
| Posted: 05 Apr 2019 04:33 PM PDT |
| What is the base temperature in space? Posted: 05 Apr 2019 07:47 PM PDT I've had an interesting thought about what the base temperature of space is. I mean in a spot where no warmth of a star gets through. I thought about 0 Kelvin. But that would be the temperature where everything is cold dead and nothing can move (at least from Earth's perspective). So what would be the base temperature in space? (I'm sorry if this question is too basic I'm an astro-noob) [link] [comments]  |
| How do animals with fur and researchers in the arctic get vitamin D? Posted: 06 Apr 2019 07:01 AM PDT |
| Posted: 05 Apr 2019 09:27 PM PDT Specifically, I've seen a few images of spiders and even the areas around their eyes and mouths appear very clean. How do they reach these areas? Or is there another reason they appear this way? [link] [comments]  |
| Posted: 05 Apr 2019 09:22 PM PDT This happens every day when I'm on the bus, and it just annoys me throughout that 30 minutes of my day. I just thought it was interesting that I only heard the beat of the music, and not the melody. [link] [comments]  |
| Posted: 06 Apr 2019 03:47 AM PDT |
| Why do smells smell good or bad? Posted: 06 Apr 2019 02:17 AM PDT I wasn't sure what flair this belonged under so correct me if I'm wrong. What is going on in your brain when you smell something good? Why does it smell good? What is happening in your brain when you smell something bad? Why does it smell bad? Why do some things smell neither good nor bad, They just have a smell? Do some smells trigger serotonin? Is serotonin what's responsible for making something smell good? Hell, what is a smell? Is it a molecule, a gas, or a magical fume? I don't have access to a search engine right now so sorry for any questions that could have been googled. [link] [comments]  |
| Why do excited electrons hesitate to fall back down? Posted: 06 Apr 2019 05:50 AM PDT I've read somewhere that when an electron absorps a photon, it is excited to a higher energy state, where it remains for a few femtoseconds, whereafter it "decays" back down to a lower energy level, emitting a photon. Why doesn't the electron decay immediately, and what determines how long it stays excited? [link] [comments]  |
| How does a nerve gas mask differ from other gas mask? Posted: 06 Apr 2019 05:40 AM PDT WWI mask were tested against chlorine , phosgene and mustard gas. What would be the necessary modifications to be effective against nerve gases, such as tabun and sarin? [link] [comments]  |
| Are there any animals who are known to travel somewhere to die? Posted: 05 Apr 2019 07:29 PM PDT I'm currently watching Our Planet on Netflix and there is a part where they film baby flamingos. I started thinking "That is a lot of babies. Do an equal amount of adult birds die each year? If yes, that seems like a large amount of dead birds in one area". I imagined lots of them dying and then thought about whether or not animals travel to die. [link] [comments]  |
| Are the products of burning tobacco especially toxic comparably? Posted: 06 Apr 2019 07:44 AM PDT As a layman I think to know that many plants have the same general 'structure' (on a certain level), which should lead to many plants having similar reaction products when burnt. Does tobacco contain distinct 'own' compounds that make it's smoke especially toxic to humans, ie more toxic than the smoke of comparable plant matter? [link] [comments]  |
| Do animals know when to stop eating or eat less since their prey can't reproduce quick enough? Posted: 06 Apr 2019 07:42 AM PDT We have a lot of trouble with overfishing the ocean for example. so I asked myself If animals may have such a problem as well and stop before it's too late. [link] [comments]  |
| Posted: 06 Apr 2019 12:59 AM PDT I know there is not one type of amphetamine and I am interested in all of them (including methamphetamine). I would also like to ask that if a non ADHD person would take Ritalin/Adderall what would he feel? Would he feel euphoria and get instantly addicted? [link] [comments]  |
| What type of iron oxide forms on the surface of steel parts during tempering? Posted: 05 Apr 2019 08:06 PM PDT When steel is tempered, depending on the temperature and atmosphere, the parts will form a different color ranging from light brown to lue to black. Is this Fe2O3 or Fe3O4 (magnetite). What range of temperatures is Fe3O4 formed on iron/steel? [link] [comments]  |
| Posted: 05 Apr 2019 02:37 PM PDT |
| How different is the human species compared to what it used to be like 9000 years ago? Posted: 06 Apr 2019 03:21 AM PDT |
| Can I electroplate with 925 silver? Or does the anode have to be 999 silver? Posted: 06 Apr 2019 03:15 AM PDT I wanted to give silver electro plating a try tomorrow for fun and just plate an old penny. I have a bit of silver from metal detecting which is mostly 925 silver, can I plate with this? Or does the anode HAVE to be pure 999 silver? Cheers [link] [comments]  |
| Why have teen birth rates declined sharply across every state in the US over the past 30 years? Posted: 05 Apr 2019 11:02 PM PDT Before looking at the data myself, I wouldn't have guessed that teen birth rates have declined dramatically in *every* US state since 1990. What explains this country-wide decline? Here are two charts showing the decline in teen birth rates: Time series of teen birth rates in every US state between 1990 and 2016. Time series of teen birth rates in the US, disaggregated by race (2007-2017). [link] [comments]  |
| Posted: 06 Apr 2019 01:56 AM PDT Very long time ago when nobody really cared about the well-being of animals somebody told me that mice were put in a vacuum and that made them inflate like balloons and killed them. This question came to me when reading a post about the testing of pressure suits for astronauts. [link] [comments]  |
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