How cautious should I be about the "big one" inevitably hitting the west-coast?

---

• How cautious should I be about the "big one" inevitably hitting the west-coast?
• How far could a gravity train travel without passing through the Earth's mantle?
• How does a BJT Amplifier work?
• Why do airplane window covers need to be lifted during takeoff and landing?
• Some things are physically too small to reflect enough light to see them under a microscope. Would it be possible to use light of another wavelength which might not be visible to the human eye, but a specifically designed image sensor to look at things that size?
• Given the fact that sound waves travel further in water than air, how can radio waves travel so far in the vacuum of space?
• How do you create plasma on a plasma gun?

How cautious should I be about the "big one" inevitably hitting the west-coast? Posted: 04 Jun 2019 02:34 AM PDT I am willing to believe that the west coast is prevalent for such big earthquakes, but they're telling me they can indicate with accuracy, that 20 earthquakes of this nature has happen in the last 10,000 years judging based off of soil samples, and they happen on average once every 200 years. The weather forecast lies to me enough, and I'm just a bit skeptical that we should be expecting this earthquake like it's knocking at our doors. I feel like it can/will happen, but the whole estimation of it happening once every 200 years seems a little bullshit because I highly doubt that plate tectonics can be that black and white that modern scientist can calculate earthquake prevalency to such accuracy especially something as small as 200 years, which in the grand scale of things is like a fraction of a second. submitted by /u/holdingsome [link] [comments]

How far could a gravity train travel without passing through the Earth's mantle? Posted: 03 Jun 2019 08:49 AM PDT I've been reading about gravity trains which, in theory, would allow an object or vehicle to travel from one point on earth to another via a straight line, or chord line, in 41 minutes. One of the major engineering problems is that to travel any major distance, the chord line passes through or close to the Earth's mantle which is too hot (and fluid) to excavate. So my question is: What is the longest possible tunnel length through the Earth's crust and without passing through the mantle to connect two points on earths surface? What would the great circle distance on the surface be? And how long would the tunnel be? This is my first post on r/askscience, you guys rock! submitted by /u/thsa00458 [link] [comments]

How does a BJT Amplifier work? Posted: 03 Jun 2019 08:03 PM PDT I actually know the bases of the function of it, how Ic is the result of Ib and all that. But what about the other values you must take into account when designing one? How do you determine the right load line in both DC and AC, its power consume, etc. Also another question: what about coupling capacitors? I already know that they block DC and "let pass" AC but how do you determine their values? submitted by /u/diprosyum [link] [comments]

Why do airplane window covers need to be lifted during takeoff and landing? Posted: 03 Jun 2019 01:01 PM PDT submitted by /u/kurebranko [link] [comments]

Some things are physically too small to reflect enough light to see them under a microscope. Would it be possible to use light of another wavelength which might not be visible to the human eye, but a specifically designed image sensor to look at things that size? Posted: 03 Jun 2019 01:48 PM PDT I've read in a comment somewhere in this subreddit, that we can't look at certain things like Atoms or Quarks since they physically can't reflect visible wavelengths because they're so small. Would this be a viable solution? submitted by /u/dinosaur_elephant [link] [comments]

Given the fact that sound waves travel further in water than air, how can radio waves travel so far in the vacuum of space? Posted: 03 Jun 2019 09:23 PM PDT An argument could be made that radio waves are simply extremely high-frequency sound waves - what allows these waves to travel through a vacuum? submitted by /u/wspnut [link] [comments]

How do you create plasma on a plasma gun? Posted: 03 Jun 2019 07:07 PM PDT What materials would be required to generate it? How much power? How heavy it would be? Would it generate any recoil? Thanks submitted by /u/seanmoca [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

What happens to your voice if you don't speak for a very long time?

---

• What happens to your voice if you don't speak for a very long time?
• Is there a special algorithm used when you put a playlist on shuffle? Will songs you listen to regularly be prioritized? Or is it actually random what order the songs come in?
• How / Is domesticated behaviour carried into genes ?
• How do stoplights actually work?
• Cacti have very colorful flowers. Are there really enough pollinators in thier arid environment?
• Has Cancer always existed or is it a modern disease?
• Is it possible to trap photons between two mirrors?
• Can single-celled organisms become cancerous?
• Why are Neanderthals considered a different species?
• If all of the atoms of heavier elements were formed in supernovae, why are they found all clumped together on earth?
• What happens in regions of space where opposing ergosperes overlap?
• How can we count the number of protons and neutrons in the nucleus?
• How do metal detectors work?
• Why do some bubbles float upwards and some go downwards?
• Was a shot through the lung survivable in the past?
• Why are people and objects still dangerous after severe radiation exposure?
• There are many fossil finds documenting human evolution and hominin subspecies since our split from chimpanzees. What evidence do we have for chimpanzee evolution during this timeframe?
• If light is massless and gravitational forces are a function of mass (and distance) why do stars/black holes pull it? Also, is it visibly distorted by Earth's gravity too?
• Is the brain capable of true multitasking? Or is does it achieve it through quick switching between tasks?
• Why can I see window tint patterns with my sunglasses on?
• Is there a depression gene?
• Do we know whether advertisements featuring "real people" work better or worse than advertisements featuring models?

What happens to your voice if you don't speak for a very long time? Posted: 02 Jun 2019 10:51 PM PDT I'm writing a story and a woman in the story is unfrozen after 2000 years, not speaking for that amount of time obviously. I was wondering if your voice would be completely gone due to that or if your voice would just be really hoarse? submitted by /u/Super-Ozzie [link] [comments]

Is there a special algorithm used when you put a playlist on shuffle? Will songs you listen to regularly be prioritized? Or is it actually random what order the songs come in? Posted: 03 Jun 2019 05:17 AM PDT I usually put on my saved songs playlist on spotify, and find that each time I end up listening to my most preferred music. Really keen to figure out if "shuffle" is really random, or if it's programmed to prioritize music I listen to often. submitted by /u/MonteTheNightcrawler [link] [comments]

How / Is domesticated behaviour carried into genes ? Posted: 03 Jun 2019 04:38 AM PDT Most dogs are friendly to humans. I assume this comes from a long term mutually beneficial relationship since prehistoric era. How that familiarity is passed through generations (if it is). Is every dog a "subwolf" that need to be updated through training that Human is the alpha etc... Or they already "know" us and are genuinely symbiotic (For the lack of other words) to us ? same could be applied to horses and cats. But dog feels like a prime case. submitted by /u/0K4M1 [link] [comments]

How do stoplights actually work? Posted: 03 Jun 2019 12:34 AM PDT I'm a delivery driver and just today while waiting a few miniutes at one did I actually question the science behind it. My question is what sensor is used to get a signal and what logic is behind the programming when it gets a signal? submitted by /u/WolfxWarri0r [link] [comments]

Cacti have very colorful flowers. Are there really enough pollinators in thier arid environment? Posted: 02 Jun 2019 10:10 PM PDT I'm having difficulty time imagining bees in place such as desert. submitted by /u/StupidPencil [link] [comments]

Has Cancer always existed or is it a modern disease? Posted: 03 Jun 2019 04:53 AM PDT Is cancer a product of our modernization? Or has it always existed even for much older generations like in the 12th century and the like? Did it exist in a different name? Etc etc submitted by /u/hb1211 [link] [comments]

Is it possible to trap photons between two mirrors? Posted: 02 Jun 2019 12:58 PM PDT submitted by /u/razorbackgeek [link] [comments]

Can single-celled organisms become cancerous? Posted: 02 Jun 2019 01:05 PM PDT Cancer happens in animal cells, and plant cells to a lesser extent, when the mechanism that controls when cells divide and how many times they should divide fails and the cells start dividing out of control. Can the same thing happen in a single-celled organism, where the timing mechanism fails and the organism just starts undergoing uncontrolled cell division? submitted by /u/jack_but_with_reddit [link] [comments]

Why are Neanderthals considered a different species? Posted: 02 Jun 2019 06:57 PM PDT From what I remember in science class, two different species can't produce fertile offspring. For example, a horse and a donkey can create a mule, but mules are sterile; therefore, horses and Donkeys can't have fertile offspring and are separate species. But Many modern humans have Neanderthal DNA, meaning that Neanderthals must have interbred with our ancestors and produced fertile offspring. Wouldn't that make Neanderthals the same species, by definition? submitted by /u/tomthehipposlayer [link] [comments]

If all of the atoms of heavier elements were formed in supernovae, why are they found all clumped together on earth? Posted: 02 Jun 2019 12:00 PM PDT One might expect a fairly uniform distribution of molecules under the conditions of a supernova, so then how do all the gold atoms find each other so as to form the veins that we ultimately find in mines? Why are there separate "copper mines" and "gold mines" and not just "mines"? submitted by /u/codewarren [link] [comments]

What happens in regions of space where opposing ergosperes overlap? Posted: 02 Jun 2019 12:09 PM PDT Let's say we had two rotating black holes rotating in the same direction. If they were close to each other, the ergospheres would overlap. In the overlapping region, we have a paradox. An object in that region would be locally exceeding the speed of light regardless of its motion. Standing still would violate both ergospheres. But moving with either one would violate the other. Granted there might be some tidal forces, but that is just an engineering problem. Imagine your (hopefully unmanned) space probe is made of very strong nonobtanium. submitted by /u/TrumpStinks2020 [link] [comments]

How can we count the number of protons and neutrons in the nucleus? Posted: 03 Jun 2019 04:23 AM PDT Today we know that the atomic nucleus is made up of protons and neutrons, and how many there are/should be in the various elements. But I have 2 questions: How did we initially discover/prove that it's made up of these 2 particles? How did we initially count them? How is this done today for new artificial, highly unstable nuclei? submitted by /u/da_peda [link] [comments]

How do metal detectors work? Posted: 02 Jun 2019 09:50 PM PDT I understand they work based on magnetic inductance, but I don't understand how the detector is able to identify the presence of a metal and its magnetic field? submitted by /u/Nsohko [link] [comments]

Why do some bubbles float upwards and some go downwards? Posted: 02 Jun 2019 06:41 PM PDT submitted by /u/Etiennewar [link] [comments]

Was a shot through the lung survivable in the past? Posted: 02 Jun 2019 05:28 PM PDT I remember that i watched a couple of old american western movies which show characters getting shot in the chest (right side) after the town physician examines the person in question they explain that he will make it since it is only a clean shot through the lung. Was it possible to survive something like that back in the 19th century, while living in a town far away from a proper hospital? Wouldnt such a injury need a thorax drainage to keep the lung from colapsing? submitted by /u/Alexander556 [link] [comments]

Why are people and objects still dangerous after severe radiation exposure? Posted: 02 Jun 2019 10:19 PM PDT I can't seem to find the answer through a google search. submitted by /u/Headozed [link] [comments]

There are many fossil finds documenting human evolution and hominin subspecies since our split from chimpanzees. What evidence do we have for chimpanzee evolution during this timeframe? Posted: 02 Jun 2019 06:08 PM PDT submitted by /u/al_fletcher [link] [comments]

If light is massless and gravitational forces are a function of mass (and distance) why do stars/black holes pull it? Also, is it visibly distorted by Earth's gravity too? Posted: 02 Jun 2019 05:34 PM PDT submitted by /u/KvotheQuote [link] [comments]

Is the brain capable of true multitasking? Or is does it achieve it through quick switching between tasks? Posted: 02 Jun 2019 03:10 PM PDT Computers simulate multitasking by switching focus between different tasks quickly so it feels like they're doing everything at once. So which is it for the human brain? And is it even possible to test/prove it? submitted by /u/cuntsquiggle [link] [comments]

Why can I see window tint patterns with my sunglasses on? Posted: 02 Jun 2019 08:28 AM PDT Just that, I noticed with some sunglasses I can see patterns in some car window tint that I cant see without. What is causing this? Im told its because the glasses are polarized, but hiw does that cause this effect? submitted by /u/gerry2stitch [link] [comments]

Is there a depression gene? Posted: 02 Jun 2019 02:35 PM PDT submitted by /u/Spicy-Rice [link] [comments]

Do we know whether advertisements featuring "real people" work better or worse than advertisements featuring models? Posted: 02 Jun 2019 05:31 PM PDT submitted by /u/KnightsWhoSayKni [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

When people forge metal and parts flake off, what's actually happening to the metal?

---

• When people forge metal and parts flake off, what's actually happening to the metal?
• What came first, bacteria or viruses?
• If we can replicate the natural process for making diamonds, why can't we make petroleum?
• Why does USB need 6+ conductors in the wire when I get high speed internet and TV over a coaxial cable?
• How was the Compton effect measured?
• why hydrogen-4 is unstable ? what forces drive neutral neutrons away from atom core ?
• How many Higgs bosons has mankind created?
• Did the impact of the asteroid that destroyed life on earth at the end of the Cretaceous affect the placement of tectonic plates?

When people forge metal and parts flake off, what's actually happening to the metal? Posted: 02 Jun 2019 01:38 AM PDT Are the flakes impurities? Or is it lost material? And why is it coming off in flakes? submitted by /u/Serendiplodocus [link] [comments]

What came first, bacteria or viruses? Posted: 02 Jun 2019 12:29 AM PDT submitted by /u/oranos5050 [link] [comments]

If we can replicate the natural process for making diamonds, why can't we make petroleum? Posted: 02 Jun 2019 07:32 AM PDT submitted by /u/Commentingbot [link] [comments]

Why does USB need 6+ conductors in the wire when I get high speed internet and TV over a coaxial cable? Posted: 02 Jun 2019 01:26 AM PDT Basically, if my internet and TV come in through a coaxial cable, why is USB slower when it has more conductors in the wire? submitted by /u/asdfgdhtns [link] [comments]

How was the Compton effect measured? Posted: 01 Jun 2019 10:45 PM PDT To my understanding the Compton effect is when a singular photon collides with singular electron the electron will gain kinetic energy and the wavelength of light will decrease such that both energy and momentum are conserved. But how was this actually measured? Since you can't fire a single photon at a single electron right? submitted by /u/Globster037 [link] [comments]

why hydrogen-4 is unstable ? what forces drive neutral neutrons away from atom core ? Posted: 01 Jun 2019 08:29 PM PDT I know adding another electron is not possible because negative electron and positive proton has already neutralised each other and so another negatively charged electron wont stick to it. and adding another proton would make it a new element. but neutrons are neutral, so why wont they stick to hydrogen-3 ? what forces drive them away ? submitted by /u/DrDespolardo [link] [comments]

How many Higgs bosons has mankind created? Posted: 31 May 2019 09:33 PM PDT I recently saw on a documentary that in 2017 we produced roughly 3 Million Higgs bosons. Do we have any data on 2018 or 2019? If not how many total? I assume multiple must be created per run with numbers that high? submitted by /u/Hmmmm_Interesting [link] [comments]

Did the impact of the asteroid that destroyed life on earth at the end of the Cretaceous affect the placement of tectonic plates? Posted: 31 May 2019 11:22 PM PDT From what I gather the asteroid hit with an immense force that, among other things, send an shockwave through the earths core. Could this force have been enough to break or deform the then existing tectonic plate structure, causing them to evolve more into the shapes we know today, or atleast their basic forms? submitted by /u/FaultySky [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

What is the force that drives light to move at the speed that it does? Or to put more simply, what propels light?

---

• What is the force that drives light to move at the speed that it does? Or to put more simply, what propels light?
• Do gasses have a similar concept to “laminar flow”?
• What’s the liquid that starts bubbling on the wood when you strike a match?
• At the end of its life, can a red giant star’s mass be expelled to leave an iron core as opposed to a neutron degenerate core?
• Does light of different wavelengths have different speeds in a medium?
• Why is the Florida Coast Darkened?
• How does our body know when to wake up in the morning?
• Has cancer always been as big a threat historically as it is now?
• Are there names for the different areas of charge in thunder clouds?
• Do black holes technically have no dimensions or more than we can process?
• Why are there extreme differences of temperature accros the world?
• Will it be possible to observe the 2024 moonlanding from earth?
• How does medicine cure depression?

What is the force that drives light to move at the speed that it does? Or to put more simply, what propels light? Posted: 01 Jun 2019 07:46 AM PDT I understand that light travels really fast. I know that is an understatement but anyway, what is it that propels light forward to move at the speed that it does without ever slowing down? submitted by /u/Adrous [link] [comments]

Do gasses have a similar concept to “laminar flow”? Posted: 01 Jun 2019 08:22 AM PDT I am asking if the actual definition of laminar flow for liquids has a parallel in gasses. I'm just a 16 year old so I need a second guess on this but my theory was that gasses just don't (without extreme intervention) because gasses aren't usually uniform in composition and the difference in density causes chaos. I wouldn't even begin to guess about what could happen if you could test with all of one gas and no others. submitted by /u/Spart_ [link] [comments]

What’s the liquid that starts bubbling on the wood when you strike a match? Posted: 01 Jun 2019 07:08 AM PDT submitted by /u/hKiwi4 [link] [comments]

At the end of its life, can a red giant star’s mass be expelled to leave an iron core as opposed to a neutron degenerate core? Posted: 01 Jun 2019 07:37 AM PDT Can the processes of age occur in a star while not letting it collapse to neutron degeneracy? I've never heard of an iron core, so then why do they always reach their critical mass to collapse into a neutron degenerate core? I suppose this applies to white dwarfs as well. submitted by /u/pizzafoot_1057 [link] [comments]

Does light of different wavelengths have different speeds in a medium? Posted: 01 Jun 2019 05:30 AM PDT So I was looking at the standard textbook illustration of glass prism spreading a light ray into rainbow when it hit me: if colors get separated, they must change by a different angle when entering the prism - and since tge angle is a function of speeds in air and glass, that would mean different colors travel at different speeds in glass. Is that the case? Which colour travels the fastest and which the slowest? Does the effect persist for wavelengths beyond visible light? Why don't we see same effect for light enterring out atmosphere (or do we and it's just not significant enough)? And most importantly, why was this never mentioned in school? submitted by /u/Naturage [link] [comments]

Why is the Florida Coast Darkened? Posted: 01 Jun 2019 06:39 AM PDT Hi, native Floridian here and new to this page. I was on Google Maps earlier and noticed that the gulf coast between Eastpoint and Homosasa is all blacked-out or much darker than the rest of the coastline. Is this from environmental disaster, deep water, or something else? It just seems so odd that just this one section is wildly darker than the rest. submitted by /u/sakilp863 [link] [comments]

How does our body know when to wake up in the morning? Posted: 01 Jun 2019 04:37 AM PDT submitted by /u/Pilif98 [link] [comments]

Has cancer always been as big a threat historically as it is now? Posted: 01 Jun 2019 04:03 AM PDT I hear a lot about people dealing with cancer in the news or in personal conversation all the time, but I realized that despite how devastating it can be, I cannot recall hearing about a single instance of anyone dying from cancer before the 20th century. As someone who has lost relatives to the disease, I have unfortunately seen firsthand how devastating it can be, which in turn has led me to question why there are so few historical mentions of it. This makes me wonder if the prevalence of cancer throughout our society is only a modern occurrence, or if it has been a threat throughout history that I have just been unaware of. Is this the case here, or has there been something that has led to an increase in cancer cases in the 20th century and beyond? submitted by /u/ohLawdyWhatDidIDo [link] [comments]

Are there names for the different areas of charge in thunder clouds? Posted: 01 Jun 2019 04:36 AM PDT From research (googling - sort of research), I've learnt that when thunderclouds form the smaller, positively-charged ice crystals (hydrometeors) move towards the top of the cloud and the the heavier, negatively charged ice crystals (also just hydrometeors) move towards the bottom. Lightning occurs between these two regions, of the lower region and the ground. I cannot find names for these two regions. Are there specific names? If so, what are they? submitted by /u/RegularHovercraft [link] [comments]

Do black holes technically have no dimensions or more than we can process? Posted: 01 Jun 2019 05:29 AM PDT Physically imagining black holes, I view them as having width and length, and possibly depth. I don't know if this is necessarily true. I'm not an expert on this sort of stuff. I have also heard, I don't know if this is necessarily accurate, that black holes are one point of extreme gravity, and because points are Zero-dimensional, therefore a black hole wouldn't have dimensions? Either way I'm not sure. submitted by /u/LOL543213 [link] [comments]

Why are there extreme differences of temperature accros the world? Posted: 01 Jun 2019 04:57 AM PDT So the earth is tiny compared the sun and million miles away so why do we have such extreme temperature differences on earth when all the countries are basically the same distance from the sun? submitted by /u/2HeckinLlamas [link] [comments]

Will it be possible to observe the 2024 moonlanding from earth? Posted: 01 Jun 2019 04:18 AM PDT I was just wondering if it will be possible to watch or record the upcoming moonlanding from earth using telescopes. submitted by /u/KikiBreiter [link] [comments]

How does medicine cure depression? Posted: 31 May 2019 12:11 PM PDT submitted by /u/AfzalOzil360 [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