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 submitted by /u/HolyShamrockBatman [link] [comments]

Can metals evaporate? If so, can the gas be condensed back into solid metal? Posted: 27 May 2018 11:45 AM PDT submitted by /u/guuitar22 [link] [comments]

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 submitted by /u/jockcel [link] [comments]

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? Posted: 27 May 2018 09:06 AM PDT submitted by /u/sluggathugga [link] [comments]

Why do amputated body parts not grow back even if bones can heal themselves? Posted: 27 May 2018 08:11 AM PDT submitted by /u/mountainbull [link] [comments]

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? submitted by /u/jehan60188 [link] [comments]

Why can't your immune get rid of bacterial STDs like syphilis etc? Posted: 27 May 2018 09:23 AM PDT submitted by /u/Laamis [link] [comments]

Since cats don't sweat/perspire; Does moving air, from a fan for instance, cool them off in hot weather? Posted: 27 May 2018 12:00 PM PDT submitted by /u/pic_vs_arduino [link] [comments]

Do large asteroids impacting Jupiter reach the surface or do they begin swimming in the thick atmosphere at a certain altitude? 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. submitted by /u/zebleck [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 submitted by /u/frey1337 [link] [comments]

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? 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. submitted by /u/qwerty-_-123 [link] [comments]

How do nutritional scientists empirically test if certain types of food are "healthier" than others (e.g. white vs brown rice)? Posted: 27 May 2018 12:28 PM PDT submitted by /u/H09909 [link] [comments]

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. submitted by /u/ivaldx [link] [comments]

Why do we tear up when we laugh too hard? Posted: 27 May 2018 10:10 AM PDT submitted by /u/VulcanMadeFox [link] [comments]

Why do we "lose our appetite" when we see things we find disgusting, or otherwise unappealing? Posted: 27 May 2018 09:53 AM PDT submitted by /u/FossilFuelsPhoto [link] [comments]

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? submitted by /u/platypus_stalker [link] [comments]

How does the body signal beard follicles to start growing and why does it sometimes happen after puberty? Posted: 27 May 2018 09:00 AM PDT submitted by /u/et809 [link] [comments]

Does Bell's inequality rely on photon polarisation being undefined before measurement rather than simply unknown? 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? submitted by /u/yeast_problem [link] [comments]

I understand why transition metal compounds have different colours and flame tests, but why are pure metals like copper, gold, and iron diffierent colours? Posted: 27 May 2018 07:39 AM PDT submitted by /u/hex6t6 [link] [comments]

If you bailed out of an airplane flying at supersonic speeds would the wind rip off or burn off your skin? Posted: 27 May 2018 04:29 AM PDT submitted by /u/TyranniCreation [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States

If the universe is (generally speaking) flat, how come, as seen from telescopes, nothing lies on a single plane? Images of the CMB aren't 3D models, so why do we see galaxies in every direction?

---

• If the universe is (generally speaking) flat, how come, as seen from telescopes, nothing lies on a single plane? Images of the CMB aren't 3D models, so why do we see galaxies in every direction?
• Is the speed of gravity constant?
• How I can I picture a radio wave in 3d space?
• How did terrestrial animals and insects like Mongoose and Spiders get to islands far from land like Hawaii or Guam?
• Supermassive black hole accretion rates, are they constant?
• If sex steroids pass through all cells, how can only one follicle be matured and one egg released at a time for women in the menstrual cycle?
• What is “Cosmic Background Radiation”?
• Are (metallic) superconductors good mirrors?
• Can you squeeze an electron?
• Do Bees differentiate types of pollen/show a preference for one type of flower over another or is it all functionally the same to them?
• In the many-worlds theory of QM, is there a theory of how many universes branch of from a single quantum observation?
• What size/speed/density would a meteor have to be to fly through Jupiter?
• Do the laws of thermodynamics apply to subatomic phenomena?
• Why do height requirements exist for some rides and what studies have been done to determine the standards?
• Does every closed system have a maximum and minimum value of entropy?

If the universe is (generally speaking) flat, how come, as seen from telescopes, nothing lies on a single plane? Images of the CMB aren't 3D models, so why do we see galaxies in every direction? Posted: 26 May 2018 03:35 PM PDT submitted by /u/joshuas3 [link] [comments]

Is the speed of gravity constant? Posted: 26 May 2018 05:03 PM PDT So I know that gravitational waves travel at the speed of light (in a vacuum) but are there circumstances where the speed of gravity changes? If so what are these circumstances? submitted by /u/The_Rickest-Rick [link] [comments]

How I can I picture a radio wave in 3d space? Posted: 26 May 2018 03:58 PM PDT I only ever see them depicted as sine waves online, but my guess would be that 'sine waves' are to radio waves as what '12' is to a carton of eggs. Is it possible to picture how they are around me in my environment? submitted by /u/browngirls [link] [comments]

How did terrestrial animals and insects like Mongoose and Spiders get to islands far from land like Hawaii or Guam? Posted: 26 May 2018 11:14 AM PDT submitted by /u/IzzyGei [link] [comments]

Supermassive black hole accretion rates, are they constant? Posted: 26 May 2018 04:28 PM PDT This article: http://www.astronomy.com/news/2018/05/snapshot-second-gaia-release-results-so-far states that we have found a supermassive black hole of 20 billion solar masses 12 billion light years away that is accreting at the rate of 1% every million years. That rather sounded like a compound interest statement, so I plugged the numbers into a calculator to figure out how large it would be after 12 billion years (now), and got 143,719,397,330,047,128,616,744,826,647,657,321,145,325,176,127,225,856 billion solar masses. That seems like a lot. Do we expect it to have stopped it's accretion at some point, or is the article miss-stating that fact (it also breaks it down as solar masses per day). Also, what's the Schwarzschild radius of something that massive? submitted by /u/voidref [link] [comments]

If sex steroids pass through all cells, how can only one follicle be matured and one egg released at a time for women in the menstrual cycle? Posted: 26 May 2018 11:27 AM PDT submitted by /u/EvilBosom [link] [comments]

What is “Cosmic Background Radiation”? Posted: 26 May 2018 11:34 AM PDT submitted by /u/IAmTheSorcerer [link] [comments]

Are (metallic) superconductors good mirrors? Posted: 26 May 2018 09:31 AM PDT I recently gained the insight that mirrors work because the electrons in the metal sheet, when an photon hits, move until their electric field is equal in strength to the photons electric field, creating the reflected oscillating field- a reflected photon. The electrical resistance of the material hampers this flow to create an opposing field. So I wonder whether superconductors, having no resistance, are mirrors, and if they are, how good they are? Are all superconductors mirrors, or only ones made of specific materials? Do they reflect all wavelenghts equally? TL;DR: Learned resistance makes mirros worse, asking if superconductors are great mirrors. P.S. If you find my english objectionable, not my first language. submitted by /u/MoeWind420 [link] [comments]

Can you squeeze an electron? Posted: 26 May 2018 08:22 AM PDT Can you squeeze an electron and make its volume smaller? This question came into my mind when I've heard that "If you remove all the space in the atoms, the entire human race could fit in the volume of a sugar cube". But to create a black hole, you would need to compress them in a smaller volume. So the conclusion is : black holes suqeeze electrons/protons. Is this true? submitted by /u/Zapakitu [link] [comments]

Do Bees differentiate types of pollen/show a preference for one type of flower over another or is it all functionally the same to them? Posted: 26 May 2018 11:56 AM PDT submitted by /u/InvertedZebra [link] [comments]

In the many-worlds theory of QM, is there a theory of how many universes branch of from a single quantum observation? Posted: 26 May 2018 06:22 AM PDT Here are 3 examples that getting answers for might clear things up. First is a fundamental uncertainty: let's say the universe consists of one electron, whose spin equally likely up or down. You observe it. Does the universe branch into two universes, one for each option? Or infinite universes, with half at spin-up and half at spin-down? Next is a case where maybe the outside world matters: Let's say there's an electron, and an potential barrier, and the electron has a 50% chance of tunneling through it. When you observe it, does the universe split into two branches? Or infinite? Finally, let's say the same electron has some irrational chance of tunneling through (lets say sqrt(3) chance). When you observe it, what exactly happens? I can't see how the universe would split into a finite amount of states after this. The reason I ask about spin AND tunneling is, I don't know if many-worlds reasoning only applies to fundamental observations, or system-observations. As a follow-up question: when people who know what they're talking about think about this stuff, do they picture universes being created for each decision, or two universes that were sitting on top of each other to begin with, diverging? submitted by /u/asdfwaevc [link] [comments]

What size/speed/density would a meteor have to be to fly through Jupiter? Posted: 26 May 2018 04:24 AM PDT submitted by /u/SaintCurls [link] [comments]

Do the laws of thermodynamics apply to subatomic phenomena? Posted: 26 May 2018 05:53 AM PDT I was studying thermodynamics for my materialsscience course and I started to wonder. It is assumed in thermodynamics that energy is constant but I guess you could look at the fission of a nucleus as chemical reaction. Not sure, what do you think? submitted by /u/RadChad14 [link] [comments]

Why do height requirements exist for some rides and what studies have been done to determine the standards? Posted: 26 May 2018 09:50 AM PDT submitted by /u/MythicalAssassin [link] [comments]

Does every closed system have a maximum and minimum value of entropy? Posted: 25 May 2018 11:00 PM PDT submitted by /u/37litebluesheep [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States

How do we know the age of the universe, specifically with a margin of error of 59 million years?

---

• How do we know the age of the universe, specifically with a margin of error of 59 million years?
• What causes different materials to expand or contract at different rates?
• Is there any wildlife at all in the Antarctic interior?
• What makes paper fresh from the copier hot? Why don't inkjet printers produce the same amount of heat as copiers do?
• What causes our throats to be sore after we use a loud voice?
• Colorblindness comes from a defect in the cones to perceive colors, is there a version where the cones work, and the rods are deficient?
• Do other animals get insomnia?
• Why is your reflection in a spoon upside down?
• How come when you look at something very bright like the sun, how come you can still see it briefly when you close your eyes?
• Can real life sounds, like an alarm clock going off, carry over into a dream?
• What makes certain materials perform well under pressure but poorly on impact(ie concrete, carbon fiber, etc)?
• Does urine slosh around in the bladder?
• What makes water taste old?
• What is the surface of diamond made out of?
• What mechanic/s does Clear Eyes use to reduce/remove redness in the eyes?
• How do we know that hunter-gatherer societies were egalitarian?
• When wiping something down with alcohol, what is that filmy residue that's left behind?
• When I take a fidget spinner by the centerpiece and launch the edge, it can spin for minutes. When I take it by the edge and launch the centerpiece, it stops after a few seconds. Why is there even a difference? Shouldn't the situation be symmetric? Something something frames of reference?
• What happens in the eyes / brain during a migraine?
• Why does the body/stomach hurt so much when we laugh really hard?
• Are our ears unable to detect pitches beyond human hearing? Or is our brain designed to ignore those pitches?
• What is the difference between osmotic pressure, oncotic pressure, and hydrostatic pressure? (Renal physiology)
• How can I predict how much a small particle of arbitrary shape will diffuse?

How do we know the age of the universe, specifically with a margin of error of 59 million years? Posted: 26 May 2018 04:17 AM PDT submitted by /u/citizenofdalaran [link] [comments]

What causes different materials to expand or contract at different rates? Posted: 25 May 2018 08:20 PM PDT Recently finished the thermodynamics unit in physics, and wanted to know what causes different materials to expand or contract at different rates? Does it have anything to do with the heat capacity, or are they two separate things? (I am aware that it is called the "coefficient of linear expansion" btw) submitted by /u/superjes1 [link] [comments]

Is there any wildlife at all in the Antarctic interior? Posted: 26 May 2018 05:27 AM PDT I saw this bit of a nature documentary about a penguin who goes marching off toward a mountain, away from the coast where all his penguin buddies hang out and occasionally go diving to eat fish. The narrator said the penguin was headed toward "certain death." Which makes sense, what's he going to eat? Is there anything at all in the interior of Antarctica away from the coast? It's frozen all year round and most of the land is covered by glaciers. submitted by /u/big-butts-no-lies [link] [comments]

What makes paper fresh from the copier hot? Why don't inkjet printers produce the same amount of heat as copiers do? Posted: 25 May 2018 09:20 PM PDT submitted by /u/nxcrosis [link] [comments]

What causes our throats to be sore after we use a loud voice? Posted: 26 May 2018 06:21 AM PDT I realized that this is something very basic that I don't understand. I can understand why using your voice for a long time causes a sore throat, from it getting dried out, hence why water is so helpful to broadcasters. But even if I yell for a short period of time, my throat becomes sore. Why? submitted by /u/Aethi [link] [comments]

Colorblindness comes from a defect in the cones to perceive colors, is there a version where the cones work, and the rods are deficient? Posted: 25 May 2018 10:24 AM PDT Most of the information I see on color blindness is around the inability of eyes to detect specific wavelengths due to changes in the cones, however, I'm curious if there is a inverse colorblindness of sorts, where people are able to see all wavelengths of color, but aren't able to discern intensities or values coming from the rods. submitted by /u/namingwaysway [link] [comments]

Do other animals get insomnia? Posted: 26 May 2018 02:50 AM PDT submitted by /u/begaterpillar [link] [comments]

Why is your reflection in a spoon upside down? Posted: 25 May 2018 07:48 PM PDT submitted by /u/Scorpionoxide [link] [comments]

How come when you look at something very bright like the sun, how come you can still see it briefly when you close your eyes? Posted: 25 May 2018 06:43 PM PDT submitted by /u/Khannuuuuur [link] [comments]

Can real life sounds, like an alarm clock going off, carry over into a dream? Posted: 25 May 2018 04:18 PM PDT submitted by /u/TheBestDanker [link] [comments]

What makes certain materials perform well under pressure but poorly on impact(ie concrete, carbon fiber, etc)? Posted: 25 May 2018 10:02 PM PDT submitted by /u/Ian_uhh_Malcom [link] [comments]

Does urine slosh around in the bladder? Posted: 25 May 2018 11:08 PM PDT There's probably not any air in the bladder so imagine the answer is no but the question occurred to me so here we are submitted by /u/butterismygecko [link] [comments]

What makes water taste old? Posted: 25 May 2018 01:14 PM PDT submitted by /u/SomethingGood123 [link] [comments]

What is the surface of diamond made out of? Posted: 25 May 2018 12:47 PM PDT I've been taught that diamond has it's specific properties because it is an allotrope of carbon with each carbon atom bonded to 4 other carbon atoms forming a tetrahedral structure. This structure repeats itself until you get to the edge or surface of the material. Are there carbon atoms at the surface of a diamond only bonded to 1 only other carbon atom or only up to 3 carbon atoms and if so, is it still considered diamond at the surface? submitted by /u/PocketCharacter [link] [comments]

What mechanic/s does Clear Eyes use to reduce/remove redness in the eyes? Posted: 25 May 2018 11:13 PM PDT submitted by /u/LifesGambit [link] [comments]

How do we know that hunter-gatherer societies were egalitarian? Posted: 25 May 2018 05:38 PM PDT I've looked at a couple of artictles and they claim that hunter-gatherer societies didn't follow a hierarchical structure. Moreover, they di that in a way that seems to be implying that all individuals had approximately equal say in group decisions, with no "alpha male" or something similar. Is this true and what sort of evidence do we have to support it? submitted by /u/skmmcj [link] [comments]

When wiping something down with alcohol, what is that filmy residue that's left behind? Posted: 25 May 2018 11:13 AM PDT submitted by /u/ChipAyten [link] [comments]

When I take a fidget spinner by the centerpiece and launch the edge, it can spin for minutes. When I take it by the edge and launch the centerpiece, it stops after a few seconds. Why is there even a difference? Shouldn't the situation be symmetric? Something something frames of reference? Posted: 26 May 2018 12:13 AM PDT submitted by /u/thetimujin [link] [comments]

What happens in the eyes / brain during a migraine? Posted: 25 May 2018 08:20 PM PDT I occasionally get very severe migraines, to the point where all I can do is sit in my bathroom with all the lights off puking until it goes away in a few hours. There are 3 main symptoms I experience: Loss of vision. Parts of things I'm reading or looking at will disappear from vision. Bright squiggly "auras". Basically lines of light that obstruct my vision. Intense pain in the back of my eye. Kind of like someone is pressing and holding down real hard on the back of my eye. What's going on in my eye / brain that causes these symptoms? submitted by /u/Malibu_Snackbar [link] [comments]

Why does the body/stomach hurt so much when we laugh really hard? Posted: 25 May 2018 07:44 PM PDT Always had this in the back of my mind, kinda funny to think about.... submitted by /u/hex_adapt [link] [comments]

Are our ears unable to detect pitches beyond human hearing? Or is our brain designed to ignore those pitches? Posted: 25 May 2018 09:05 AM PDT submitted by /u/stolen_loom [link] [comments]

What is the difference between osmotic pressure, oncotic pressure, and hydrostatic pressure? (Renal physiology) Posted: 25 May 2018 09:54 PM PDT submitted by /u/anonymice3 [link] [comments]

How can I predict how much a small particle of arbitrary shape will diffuse? Posted: 25 May 2018 10:45 AM PDT I understand the "Stokes-Einstein equation"#Stokes-Einstein_equation) and how much a spherical particle will diffuse when it is small and experiencing purely Brownian forces. But what about particles that are not spherical? Is there a process to calculate the translational diffusion coefficient for a particle of arbitrary size? submitted by /u/RickAndMorty101Years [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States