Does the efficiency or power consumption of electronics change with temperature?

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• Does the efficiency or power consumption of electronics change with temperature?
• AskScience AMA Series: I'm Dr. Haider Warraich, a cardiologist who wrote a new book on humanity's greatest killer: heart disease. Ask me anything!
• Why is the Southeastern US humid despite sharing latitude with arid North Africa?
• Why Do We All Generally Agree On What Creatures Are Cute or Grotesque?
• Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology
• Do hormones in diet get broken down before they can work?
• Do protist supergroups Excavata and Chromalveolata have cell walls? What type of reproduction do they have? What are their modes of nutrition?
• Why do some drugs work in microgram doses while others need milligrams or more?
• Why does count of RBCs increase during emotional upset ?
• Are hadron collider essentially nuclear fusion reactors?
• How do micro-plastics affect the body when ingested?
• Why do some animals bother storing their urine in bladders and feces in rectums? Why don't all animals just eject their waste immediately?
• Are peripheral and central neurons structurally different?
• How does plasma behave different from each other and also from normal fluid flow?
• Are adhesion zones (aka Bayer's junctions) physiological bacterial features or just fixation artifacts?
• The universe is expanding, and it seems this expansion is accelerating. This is the main argument against the Big Crunch theory. My question is why is it not possible that we are just seeing the first part of the expansion?
• Why don't intestines knot up like earbuds?
• Are histones only present during mitosis?
• What is it about the quality of pitch-shifted audio (e.g. Alvin and the Chipmunks) that makes the human ear able to perceive that it's pitch-shifted, not people singing in a higher/lower key?
• How does the depth of water table affect drainage time? (hydrogeology question)

Does the efficiency or power consumption of electronics change with temperature? Posted: 14 Aug 2019 01:16 AM PDT I recently have decided to hella overclock a PC I built this year, and someone told me that the better the cooling is on the water cooling I'm going to be using the less potential power consumption there will be. He said the electrical resistance drops with temperature there by decreasing the necessary voltage, and quite possibly allowing for a higher overall overclock speed. Is that true and if so, what is the science behind that? submitted by /u/orionpewpew [link] [comments]

AskScience AMA Series: I'm Dr. Haider Warraich, a cardiologist who wrote a new book on humanity's greatest killer: heart disease. Ask me anything! Posted: 14 Aug 2019 04:00 AM PDT Heart disease still kills more people than any other disease in the world, yet there are so many myths, misconceptions and misinformation about it. I'm cardiologist Haider Warraich, author of the new book, State of the Heart - Exploring the History, Science and Future of Cardiac Disease (St Martin's Press, July 2019), where I break down the history of the heart, what we know about it today, and what we know about its future study. I write frequently for the New York Times, where you can read my Op Eds. See everyone at 12pm ET (16 UT), ask me anything! submitted by /u/AskScienceModerator [link] [comments]

Why is the Southeastern US humid despite sharing latitude with arid North Africa? Posted: 14 Aug 2019 03:55 AM PDT submitted by /u/emmazunz84 [link] [comments]

Why Do We All Generally Agree On What Creatures Are Cute or Grotesque? Posted: 14 Aug 2019 06:53 AM PDT How come as a species we all agree that things like cats, dogs, rabbits or even bats are cute or aesthetically pleasing while things like spiders and angler fish are considered grotesque and ugly. At first I figured it was an evolutionary thing such as an ingrained fear of spiders to keep us from being bit but by that logic we should find felines and canines ugly as they would have been dangerous to use too. Cougars and bears are considered cute. Is it traits that are closely related to us? But what about birds and even snakes being liked? How is it no one ever looks at a camel spider and wants to cuddle it when we can have such differing opinions on colours, architecture and art? submitted by /u/LoveScore [link] [comments]

Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology Posted: 14 Aug 2019 08:13 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Economics, Political Science, Linguistics, Anthropology Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! submitted by /u/AutoModerator [link] [comments]

Do hormones in diet get broken down before they can work? Posted: 13 Aug 2019 02:58 PM PDT I've seen many claims about either detrimental or positive effects from consuming hormones as part of your diet. For example, plant oestrogens in soy milk, growth hormones and casein in milk. It seems to naïve me that in principle, all proteins should start to get hydrolysed in the stomach by HCl, pepsin, protease etc. Surely most of it is denatured/hydrolysed in the cooking process anyway! So apart from enzymatic/hormonal action in your mouth, can hormones/enzymes get absorbed and affect you? Would love to hear some science. Cheers, A Chemical Physicist submitted by /u/_Giraffacake [link] [comments]

Do protist supergroups Excavata and Chromalveolata have cell walls? What type of reproduction do they have? What are their modes of nutrition? Posted: 14 Aug 2019 07:57 AM PDT submitted by /u/emilysuh1234 [link] [comments]

Why do some drugs work in microgram doses while others need milligrams or more? Posted: 14 Aug 2019 07:50 AM PDT submitted by /u/americanmonty [link] [comments]

Why does count of RBCs increase during emotional upset ? Posted: 14 Aug 2019 07:49 AM PDT submitted by /u/HellBringer11 [link] [comments]

Are hadron collider essentially nuclear fusion reactors? Posted: 14 Aug 2019 07:28 AM PDT submitted by /u/not-too-chad [link] [comments]

How do micro-plastics affect the body when ingested? Posted: 14 Aug 2019 07:26 AM PDT submitted by /u/madastronaut [link] [comments]

Why do some animals bother storing their urine in bladders and feces in rectums? Why don't all animals just eject their waste immediately? Posted: 14 Aug 2019 06:23 AM PDT submitted by /u/muff_marauder [link] [comments]

Are peripheral and central neurons structurally different? Posted: 14 Aug 2019 05:43 AM PDT Do these neurons just serve different functions due to their location and connections, or is there something structurally different about them? I was reading about hot flatworms can remember things even after their brain is cut off and regrows, so I'm wondering if peripheral neurons could serve the same functions as CNS neurons, or if they are structurally different? submitted by /u/gmanflnj [link] [comments]

How does plasma behave different from each other and also from normal fluid flow? Posted: 13 Aug 2019 09:49 PM PDT submitted by /u/divineflare1411 [link] [comments]

Are adhesion zones (aka Bayer's junctions) physiological bacterial features or just fixation artifacts? Posted: 13 Aug 2019 11:18 AM PDT I have a question about bacterial physiology that I haven't been able to find a clear answer to in the literature. Specifically, I am wondering what the current status of the concept of adhesion zones or Bayer's junctions is. These refer to putative sites where the inner and outer membrane of gram negative bacteria are in contact or at least adjacent. My understanding is that between the late 60's and early 90's there was some imaging work and phage-based work supporting the hypothesis, but around 1990 criticism arose that these were artifacts of the chemical fixation methods and not present with cryofixation. I came across this doing some idle research on the mechanisms of chemical competence in E. coli - specifically, in Hanahan's chapter in Escherichia coli and Salmonella (Neidhardt), he suggests that pores formed from these zones of adhesion are a major route for DNA uptake. Following up a little on this, I came across the controversy, but wasn't able to find any resolution. The citing literature is fairly nonspecific and often just cites from the 60's and 70's so I'm not sure if there is a consensus as to whether these are actually existing structures or not. Some references: Bayer's original paper: https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-53-3-395 Critical discussion: Kellenberger 1990 - https://www.ncbi.nlm.nih.gov/pubmed/2201866 Bayer's reply: https://www.sciencedirect.com/science/article/pii/104784779190052X submitted by /u/loves_to_barf [link] [comments]

The universe is expanding, and it seems this expansion is accelerating. This is the main argument against the Big Crunch theory. My question is why is it not possible that we are just seeing the first part of the expansion? Posted: 13 Aug 2019 11:01 PM PDT As far as I understand, in an explosion, the speed increases until there is no more combustible material to combust. Could we not just be in this phase of the explosion that was the Big Bang? I could have completely misunderstood the basic concepts here and I apologise if that is so. Please educate me. submitted by /u/vale-para-pura-pija [link] [comments]

Why don't intestines knot up like earbuds? Posted: 13 Aug 2019 11:53 AM PDT submitted by /u/Deleizera [link] [comments]

Are histones only present during mitosis? Posted: 13 Aug 2019 08:44 AM PDT Are histones only present during mitosis? Studying for Biology exam submitted by /u/Wistoft2410 [link] [comments]

What is it about the quality of pitch-shifted audio (e.g. Alvin and the Chipmunks) that makes the human ear able to perceive that it's pitch-shifted, not people singing in a higher/lower key? Posted: 13 Aug 2019 08:10 AM PDT submitted by /u/lapapinton [link] [comments]

How does the depth of water table affect drainage time? (hydrogeology question) Posted: 13 Aug 2019 08:38 AM PDT Darcy's law applied to falling head condition appears to indicate that ponded water on the surface would drain more quickly when the water table higher. i.e. nearer to the surface: t = L K ln (H_o/H_t) Where: H_o = the depth of ponded water plus the (original) depth to water table, H_t (and L) = the depth from the surface to the water table, K = hydraulic conductivity t = time But I am told that ponded water would drain more quickly when the water table is lower. What am I overlooking? submitted by /u/Outgrabe [link] [comments]

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Since the small intestine is coiled up inside the body, are they all similar in shape? Or is it completely random?

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• Since the small intestine is coiled up inside the body, are they all similar in shape? Or is it completely random?
• Are europeans immune to the black death?
• What shape does a chain make when rotating around a pin at one end at a constant rate?
• Has there been any refinements to existing theory or new hypotheses since the Higgs mass was found to be 125 GeV?
• When two materials are rubbed together, do both of them receive equal amount of the heat generated?
• Can low energy radio waves redshift down to zero hertz?
• What is the difference between an Ionic Bond and a Covalent Bond?
• EDS question: What accounts for the differences in visible x-ray counts from different shells on a spectrograph?
• Why don't telomers shorten over generations?
• What causes the bubbles when liquids are boiling?
• How long does bacteria and other life forms live on our body after we die?
• What are ideal situations for the creation of stalactites or stalagmites?
• How well can personality traits currently be predicted using neurological measures?
• Why does activated charcoal pop and crackle when water is poured over it?
• If all compounds are neutral, why is the ionic compound chromate (CrO4 2-) negatively charged?
• Are all mountains on Mars volcanic?
• Can an ECG read voluntary muscle contraction ?

Since the small intestine is coiled up inside the body, are they all similar in shape? Or is it completely random? Posted: 13 Aug 2019 12:57 AM PDT Was thinking about how even though noses are different in shape, they are all just slight modifications to what would be a regular nose shape. submitted by /u/htjones34 [link] [comments]

Are europeans immune to the black death? Posted: 13 Aug 2019 01:43 AM PDT submitted by /u/Meresheres [link] [comments]

What shape does a chain make when rotating around a pin at one end at a constant rate? Posted: 13 Aug 2019 02:25 AM PDT A point mass on the end of a massless string follows a circle around the pin and its radius can be worked out with gravity and the rotational speed. But what if the mass is distributed along the string, like a chain? Since the centripetal force varies with radius of rotation but gravity is constant, does the string settle into an arc of some kind? submitted by /u/Tripsel2 [link] [comments]

Has there been any refinements to existing theory or new hypotheses since the Higgs mass was found to be 125 GeV? Posted: 12 Aug 2019 01:50 PM PDT submitted by /u/convoluteme [link] [comments]

When two materials are rubbed together, do both of them receive equal amount of the heat generated? Posted: 13 Aug 2019 12:55 AM PDT With both of them having the same surface area, of course. submitted by /u/takemyphoto [link] [comments]

Can low energy radio waves redshift down to zero hertz? Posted: 12 Aug 2019 05:39 PM PDT Imagine if you have a radio wave at the very bottom of the energy spectrum. Say 3 hertz. 3 is real close to zero. Can a radio wave redshift down to zero hertz? In other words, can a wave redshift into a line and if so, what happens next? Is there a point as which additional redshifting is just impossible? submitted by /u/Flux_State [link] [comments]

What is the difference between an Ionic Bond and a Covalent Bond? Posted: 13 Aug 2019 06:39 AM PDT If Covalent Bonds share two electrons then what is the difference between that and an Ionic Bond that drops or adds two electrons? submitted by /u/Silverkatana224 [link] [comments]

EDS question: What accounts for the differences in visible x-ray counts from different shells on a spectrograph? Posted: 13 Aug 2019 05:56 AM PDT I understand the ratios between k-alpha and k-beta, for instance. However, what exactly accounts for the difference in counts between the k-peaks, l-peaks, and m-peaks in general (where the k-alpha and often the m-alpha always seems to have a higher count than any l-peak)? Here is typical example I often see: Copper: https://ibb.co/hCYm6Pf Notice how the k-alpha peak (and it is to the right) towers over the l-peak. Tantalum: https://ibb.co/hRZwqq1 Notice here though that the m-alpha peak (and it is to the left) is towering over any of the l-peaks. Given enough overvoltage applied and a heavy enough element, why wouldn't k-alpha / l-alpha, and correspondingly, l-alpha / m-alpha have roughly the same count rate? In fact, given that there are more electrons in the m-shell than the l-shell, and more electrons in the l-shell than the k-shell, shouldn't m-alpha tower over l-alpha, and l-alpha tower over k-alpha? I know that there is something basic I am missing here, but if anyone could help, it would be much appreciated. submitted by /u/BlastRadius00 [link] [comments]

Why don't telomers shorten over generations? Posted: 12 Aug 2019 01:28 PM PDT As you age these get shorter, a newborn has long telomers. Are these the same as their parents? submitted by /u/FunDeckHermit [link] [comments]

What causes the bubbles when liquids are boiling? Posted: 13 Aug 2019 02:49 AM PDT was watching my pasta water bring to a boil and I realized I have no idea why this is happening submitted by /u/TheGuyOnThatRoof [link] [comments]

How long does bacteria and other life forms live on our body after we die? Posted: 13 Aug 2019 12:57 AM PDT submitted by /u/sirmattimous [link] [comments]

What are ideal situations for the creation of stalactites or stalagmites? Posted: 13 Aug 2019 12:51 AM PDT Basically the title. I have an idea in my head that it would be kinda cool to set up a tube in my room to slowly grow a stalactite/mite. At the moment the idea is an airtight tube, at 100% humidity and a mesh that has high calcium water drip slowly onto it. Since it's such a slow process though, it would be quite hard to tell whether the drip speed should be changed, whether more calcium could be in the water, etc. I could probably only modify things about once a month or so, so being closer to start would be quite useful. submitted by /u/Reaper_Lord [link] [comments]

How well can personality traits currently be predicted using neurological measures? Posted: 12 Aug 2019 08:55 AM PDT Are there combinations of neurological traits that are known to predict a large amount of variance in some personality traits? submitted by /u/tailcalled [link] [comments]

Why does activated charcoal pop and crackle when water is poured over it? Posted: 12 Aug 2019 07:41 AM PDT Why does activated charcoal pop and crackle when water is poured over it? submitted by /u/DanielConlin93 [link] [comments]

If all compounds are neutral, why is the ionic compound chromate (CrO4 2-) negatively charged? Posted: 12 Aug 2019 05:13 PM PDT My textbook says that compounds should always have a neutral charge, but that is almost never the case. And doesn't chromium have 14 valence electrons, so having 4 oxygen that in total, need 8 electrons from the chromium, still wouldn't be good since the chromium has 6 electrons left? Why does this compound even work, the chromium is left without a full amount of electrons on its outer ring. I've tried looking online, but it seems to not have the answer I'm looking for. submitted by /u/xlDirtyDanlx [link] [comments]

Are all mountains on Mars volcanic? Posted: 12 Aug 2019 10:05 AM PDT Follow up questions: Does Mars have tectonic plates like Earth? Why do both poles have such high elevations—especially considering the otherwise low elevations in the Northern hemisphere? submitted by /u/iconine9 [link] [comments]

Can an ECG read voluntary muscle contraction ? Posted: 12 Aug 2019 02:14 PM PDT From my understanding of how ECGs work, wouldn't an ecg reading pick up the action potential generated by skeletal muscle contraction in the same way it picks up the electrical impulse caused by the heart muscles ? submitted by /u/ahtan007 [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

AskScience AMA Series: I'm Dr. Kaeli Swift, and I research corvid behavior, from funerals to grudges to other feats of intellect. Ask me anything!

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• AskScience AMA Series: I'm Dr. Kaeli Swift, and I research corvid behavior, from funerals to grudges to other feats of intellect. Ask me anything!
• Megalodon is often depicted as an enlarged Great a White Shark (both in holleywood and in scientific media). But is this at all accurate? What did It most likely look like?
• Has the invention of the light bulb lead to any measurable evolutionary changes among moths or other night light-obsessed insects?
• Did some animals develop "smell camouflage" ?
• Is the Earth’s size compared to the universe larger than a drop of water compared to all the oceans on earth?
• Has anyone ever tried the Double Slit Experiment with sound waves?
• Are clouds a biome for microbial life?
• What causes new food allergies or intolerances to start later in life, when you've been happily eating those foods for decades previously?
• what’s the difference between a disorder, a disability, and disease ?
• Change in weight when going below the earth's surface?
• Why is it that a tone sound (or appear to sound) louder at some frequencies?
• What exactly is happening when light interacts with matter?
• Can blood-flow in mammals be reversed?
• Can an element have enough protons/neutrons in 1 atom to be visible from the human eye?
• Fibromyalgia is commonly used as a blanket term due to lack of research. What is it actually, does it even exist as a specific illness?
• Is the intensity of a Sonic boom the same depending on how fast the object accelerated and the does the Sonic boom get louder the faster you go ?
• Does the pH of water affect its "color"?
• Are there clear examples of subgroups in a species diverging on a clear path to become different species?
• Why are some deep sea animals white/translucent while others are red/black?
• Why do proteins misfold?
• How do mushrooms interact with the sun? What is their relationship with the sun?
• The most accurate atomic clock is predicted to lose 1 second every 30 billion years so what are they measuring it against that is more accurate than the atomic clock and informs them the exact time?
• Why is cancer dangerous? Whats the problem with having uncontrolled division of cells? How does that pose a problem?
• Since simple computer functions - especially finding a specific index in an array - are not size-dependent in terms of computing time, why do computers still take time to search their own drives for file names?
• What is the relationship between Tardigrades and Opabinia?

AskScience AMA Series: I'm Dr. Kaeli Swift, and I research corvid behavior, from funerals to grudges to other feats of intellect. Ask me anything! Posted: 12 Aug 2019 04:00 AM PDT Hi Reddit! I'm Kaeli Swift a behavioral ecologist specializing in crows and other corvids at the University of Washington. Right now my work focuses on the foraging ecology of the cutest corvid, the Canda jay. For the previous six years though, I studied the funeral behaviors of American crows. These studies involved trying to understand the adaptive motivations for why crows alarm call and gather near the bodies of deceased crows through both field techniques and non-lethal brain imaging techniques. Along the way, I found some pretty surprising things out about how and when crows touch dead crows. Let's just say sometimes they really put the crow in necrophilia! You can find coverage of my funeral work at The New York Times, on the Ologies podcast, and PBS's Deep Look. For future crow questions, you can find me at my blog where I address common questions, novel research, myths, mythology, basically anything corvid related that people want to know about! You can also find me here on Reddit, Twitter, Instagram, and Facebook all at the corvidresearch handle. I'm doing this AMA as part of Science Friday's summer Book Club - they're reading The Genius of Birds by Jennifer Ackerman! Pumped for your corvid questions!!! See everyone at 12pm ET (16 UT), ask me anything! submitted by /u/AskScienceModerator [link] [comments]

Megalodon is often depicted as an enlarged Great a White Shark (both in holleywood and in scientific media). But is this at all accurate? What did It most likely look like? Posted: 11 Aug 2019 08:07 AM PDT submitted by /u/Trifle-Doc [link] [comments]

Has the invention of the light bulb lead to any measurable evolutionary changes among moths or other night light-obsessed insects? Posted: 11 Aug 2019 07:36 PM PDT Full disclosure this was inspired by this decent meme. submitted by /u/formula_F300 [link] [comments]

Did some animals develop "smell camouflage" ? Posted: 12 Aug 2019 06:27 AM PDT It seems like a lot of animals developped strong camouflage skills to avoid being spotted by the eye. But since a lot of predators use mostly their sense of smell to track down their prey, how come those preys did not evolve to no smell anything? For example, deers have a very strong smell, making it rather easy for wolves to them. Why didn't the deers with the weakest smell got selected by evolution ? submitted by /u/Andeol57 [link] [comments]

Is the Earth’s size compared to the universe larger than a drop of water compared to all the oceans on earth? Posted: 12 Aug 2019 04:17 AM PDT submitted by /u/TrustTheProshess [link] [comments]

Has anyone ever tried the Double Slit Experiment with sound waves? Posted: 12 Aug 2019 04:16 AM PDT I am curious to see what the results would look like if we did the same experiment with sound rather than light submitted by /u/y0nderYak [link] [comments]

Are clouds a biome for microbial life? Posted: 12 Aug 2019 05:18 AM PDT submitted by /u/nondirtysocks [link] [comments]

What causes new food allergies or intolerances to start later in life, when you've been happily eating those foods for decades previously? Posted: 12 Aug 2019 04:05 AM PDT submitted by /u/Brazensword [link] [comments]

what’s the difference between a disorder, a disability, and disease ? Posted: 11 Aug 2019 06:35 PM PDT i wasn't sure what to flair it with since it's pretty general. submitted by /u/dleifmurb [link] [comments]

Change in weight when going below the earth's surface? Posted: 12 Aug 2019 02:51 AM PDT Intrigued by something I read today, and hope someone can enlighten me! When descending into the earth, your weight will steadily decrease, as there is less mass to provide gravitational force. I'm assuming that at some point the decrease will slow and eventually stop. But at what point might that occur? To clarify my question, let's assume you are standing on a scale atop the planet's surface (the crust). As weight is effected by the gravitational forces at work, you will become lighter as you pass through the crust and mantle and less of the earth's mass is beneath your feet. But at some point as you descend, I assume the mass above you will begin to counteract the mass below you, and your weight loss will slow and eventually stop. Should you continue through the planet's core in a straight line, I would think the weight measured by the scale would cease to be the weight of your body and become the weight of the scale itself being pulled by gravity. I'm theorizing that the scale would then begin gaining weight as it is pulled towards the earth's mass and its movement limited by your feet. One unknown here is the relation in density between the earth's layers. I know the inner core is the most dense portion, but does density increase at a relatively stable rate as you progress towards the center (excluding, of course, the widely-varied density of the lithosphere)? Obviously a human could not survive such a descent, so this is a purely theoretical scenario. But I am curious as to how mass, gravity, and measured weight interplay here. Much thanks for any information! submitted by /u/jFalner [link] [comments]

Why is it that a tone sound (or appear to sound) louder at some frequencies? Posted: 12 Aug 2019 02:34 AM PDT So i was playing around with a frequency generator site and noticed that whenever i played a tone of frequency 100hz or a frequency of 150hz, the loudness of the tone felt like it was very high as compared to the loudness of tones of different frequencies. Why is this so? Is the loudness (or perceived loudness) due to the sound system, the human body or is there another reason for this? submitted by /u/alt_i_guess [link] [comments]

What exactly is happening when light interacts with matter? Posted: 11 Aug 2019 12:07 PM PDT I know from my limited understanding of optics that when light interacts with matter it may be absorbed or "scattered" to a new direction, and that the chance of absorption and nature of the scattering have to do with the properties of the material. At a quantum-mechanics or quantum-field level, what exactly is happening? It was once explained to me in terms of photons being absorbed, exciting electrons and being re-emitted with a different energy, but something else I read said this wasn't correct. Is all light-matter interaction essentially the same process or are there different rules depending on the configuration? I.e. is the same thing happening when light interacts with a glass lens as when it interacts with gas molecules in the atmosphere? submitted by /u/pixelated_nutsack [link] [comments]

Can blood-flow in mammals be reversed? Posted: 12 Aug 2019 12:41 AM PDT Hypothetically, if a heart-transplant was performed with the heart installed back-to-front such that it reversed the blood flow in the body, would the recipient survive? What would be the consequences? Have there been any studies on this or is there a fundamental reason it just won't work? submitted by /u/uncertain_expert [link] [comments]

Can an element have enough protons/neutrons in 1 atom to be visible from the human eye? Posted: 11 Aug 2019 11:40 PM PDT submitted by /u/Gorgmeister [link] [comments]

Fibromyalgia is commonly used as a blanket term due to lack of research. What is it actually, does it even exist as a specific illness? Posted: 11 Aug 2019 08:44 PM PDT My girlfriend has been diagnosed with fibromyalgia and I want to find out more about it, but so far everything I have been able to find and ask doctors in person has been very minimal and ultimately confusing. What even is it? Is it a term used only when doctors dont know the problem? I want to know if we should spend a lot of time going through every type of doctor to get it specified or if we can focus on a particular area. submitted by /u/brettlw_ [link] [comments]

Is the intensity of a Sonic boom the same depending on how fast the object accelerated and the does the Sonic boom get louder the faster you go ? Posted: 11 Aug 2019 10:20 PM PDT We're taking two identical objects A and B . 1 . Let's say object A accelerated to Mach 1.7 in 7 mins But object B accelerated to Mach 1.7 near instantaneously ( we're assuming that's possible) would the Sonic booms be different. Object A accelerates instantaneously to Mach 1.7 Object B accelerates instantaneously to Mach let's say 3.5 Would the boom be louder ? submitted by /u/Narwhalbacon95 [link] [comments]

Does the pH of water affect its "color"? Posted: 11 Aug 2019 04:12 PM PDT I've noticed with my swimming pool it seems like I can tell when my pH is floating too high as the water begins to look more "white" and clear, rather than having it's usual blue-ish tone. Typically when I notice this testing does show a higher pH. I know algae prefers the basic environment and this could be explained by algae beginning and yellowing out the blue, but does the pH of the water actually have an effect as well? submitted by /u/zzevannn [link] [comments]

Are there clear examples of subgroups in a species diverging on a clear path to become different species? Posted: 11 Aug 2019 04:38 PM PDT We see tons of examples of the "Before and After" with documented cases of evolution from a single parent group like the Finches of The Galápagos Islands. I am looking for examples of us observing the "during". What I am looking for are subgroups within a species where individuals can still mate across groups to produce fertile offspring but are distinct enough to indicate that they will one day be distinct species. I definitely understand that evolution and taxonomy are both fluid and more of a spectrum than a binary condition but wanted to see if there were any examples of a species with separate sub groups or populations that fit that description! submitted by /u/The_Dwight_Schrute [link] [comments]

Why are some deep sea animals white/translucent while others are red/black? Posted: 12 Aug 2019 01:07 AM PDT I googled it abit and found that Deep Sea Animals were red/black as that camouflaged them in the darkness of the abyss. But what about animals like the Deep Sea Skate? Why is it so white; wouldn't that make them super visible? submitted by /u/geckoinyourface [link] [comments]

Why do proteins misfold? Posted: 12 Aug 2019 12:48 AM PDT submitted by /u/SisyphusRollsOn [link] [comments]

How do mushrooms interact with the sun? What is their relationship with the sun? Posted: 11 Aug 2019 05:56 PM PDT I will accept anecdotes. I just want as much information as possible about how mushrooms/fungi/spores/mycelium relate to the sun. Especially anything that strikes you as interesting or unique. Thanks in advance for your time! submitted by /u/Blueowl789 [link] [comments]

The most accurate atomic clock is predicted to lose 1 second every 30 billion years so what are they measuring it against that is more accurate than the atomic clock and informs them the exact time? Posted: 11 Aug 2019 01:43 PM PDT What I am confused about is that scientist must know what the exact length of time that will pass for the next 30 billion years to know that the clock has lost 1 second . Maybe I'm not understanding this correctly submitted by /u/crikcet37 [link] [comments]

Why is cancer dangerous? Whats the problem with having uncontrolled division of cells? How does that pose a problem? Posted: 11 Aug 2019 03:39 PM PDT submitted by /u/BitterApple69 [link] [comments]

Since simple computer functions - especially finding a specific index in an array - are not size-dependent in terms of computing time, why do computers still take time to search their own drives for file names? Posted: 11 Aug 2019 11:50 AM PDT There've been a few times when I want to find a file I KNOW I have on my computer, but don't know where it is. Searching the entire C drive takes at least a minute for me, but from a computer science perspective, I would expect this process to be instantaneous. EDIT: Wow thank you so much for the replies! This definitely answers my question submitted by /u/liorslightsaber [link] [comments]

What is the relationship between Tardigrades and Opabinia? Posted: 11 Aug 2019 05:39 PM PDT submitted by /u/ProximaKaiju [link] [comments]

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