How come when hot metal is placed in cold water, it does not shatter like glass? |
- How come when hot metal is placed in cold water, it does not shatter like glass?
- Can metals evaporate? If so, can the gas be condensed back into solid metal?
- How does Vitamin D absorbed from the sun vs. orally supplemented Vitamin D affect the human body?
- I've heard that Pangaea didn't have much in the way of mountain ranges, but shouldn't a supercontinent comprised of plates that smashed together have some massive mountain ranges? How do we know one or the other is true?
- Why do amputated body parts not grow back even if bones can heal themselves?
- Does everything emit radiation?
- Why can't your immune get rid of bacterial STDs like syphilis etc?
- Since cats don't sweat/perspire; Does moving air, from a fan for instance, cool them off in hot weather?
- Do large asteroids impacting Jupiter reach the surface or do they begin swimming in the thick atmosphere at a certain altitude?
- What happens to the bullets that are shot into the air?
- Are electric and magnetic fields made out of photons (since the photon is the force carrier)? If so, why aren't those fields affected by a physical barrier like visible light is?
- How do nutritional scientists empirically test if certain types of food are "healthier" than others (e.g. white vs brown rice)?
- How did scientists measure the speed of light?
- Why do we tear up when we laugh too hard?
- Why do we "lose our appetite" when we see things we find disgusting, or otherwise unappealing?
- Has a link been found between red meat and heart disease in any mammal other than humans?
- How does the body signal beard follicles to start growing and why does it sometimes happen after puberty?
- Does Bell's inequality rely on photon polarisation being undefined before measurement rather than simply unknown?
- I understand why transition metal compounds have different colours and flame tests, but why are pure metals like copper, gold, and iron diffierent colours?
- If you bailed out of an airplane flying at supersonic speeds would the wind rip off or burn off your skin?
| How come when hot metal is placed in cold water, it does not shatter like glass? Posted: 27 May 2018 10:36 AM PDT |
| Can metals evaporate? If so, can the gas be condensed back into solid metal? Posted: 27 May 2018 11:45 AM PDT |
| How does Vitamin D absorbed from the sun vs. orally supplemented Vitamin D affect the human body? Posted: 27 May 2018 01:06 PM PDT |
| Posted: 27 May 2018 09:06 AM PDT |
| Why do amputated body parts not grow back even if bones can heal themselves? Posted: 27 May 2018 08:11 AM PDT |
| Does everything emit radiation? Posted: 27 May 2018 04:01 PM PDT https://en.m.wikipedia.org/wiki/Planck_temperature This makes it seem like everything thar isnt at absolute zero emits radiation, and we can measure the temperature of an object by measuring the wavelength of the light it emits Can I put a person in some kind of faraday cage and take their surface temperature by measuring the amount/quality of EM energy they emit? Can I measure the temperature of a light bulb based on its color? [link] [comments]  |
| Why can't your immune get rid of bacterial STDs like syphilis etc? Posted: 27 May 2018 09:23 AM PDT |
| Posted: 27 May 2018 12:00 PM PDT |
| Posted: 27 May 2018 12:53 PM PDT With Juno amazingly confirming the clouds of Jupiter to go as far as 3000km down, I was wondering if an asteroid could actually reach the surface or if it would be stopped by the increasingly dense clouds on Jupiter. [link] [comments]  |
| What happens to the bullets that are shot into the air? Posted: 27 May 2018 02:06 PM PDT They surely fall down after a while right? If correct, they can easily cause damage or even harm to someone [link] [comments]  |
| Posted: 27 May 2018 04:01 PM PDT Photons are force carrier particles that carry the electromagnetic force; if so, how come those fields aren't affected by a physical barrier? I've heard that fields aren't made out of anything, but I've also heard that they are an exchange of particles. [link] [comments]  |
| Posted: 27 May 2018 12:28 PM PDT |
| How did scientists measure the speed of light? Posted: 27 May 2018 08:03 AM PDT With the speed of light being so fast, how do scientists measure it? I would think the instruments we use now wouldn't be able to detect something moving that fast. [link] [comments]  |
| Why do we tear up when we laugh too hard? Posted: 27 May 2018 10:10 AM PDT |
| Why do we "lose our appetite" when we see things we find disgusting, or otherwise unappealing? Posted: 27 May 2018 09:53 AM PDT |
| Has a link been found between red meat and heart disease in any mammal other than humans? Posted: 27 May 2018 05:05 AM PDT There are many obligate carnivores that eat red meat almost exclusively. Can this diet cause heart disease? And if not, what are the adaptations that humans do not have? [link] [comments]  |
| Posted: 27 May 2018 09:00 AM PDT |
| Posted: 27 May 2018 09:27 AM PDT My reading of EPR is that simple values such as momentum must have a value even when not measured, which flies against the uncertainty principle and wavelike nature of particles. I've tried reading Bell's papers and subsequent ones and I can't tell whether they rely on the photon having an uncertain polarisation before measurement, but a hidden variable defining the outcome of the measurement, rather than an unknown polarisation before measurement and the outcome of the measurement being probabilistic. Can someone point me to anything that helps me understand this better? [link] [comments]  |
| Posted: 27 May 2018 07:39 AM PDT |
| Posted: 27 May 2018 04:29 AM PDT |
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