I’ve read that when caterpillars are in their cocoons, they dissolve completely into goo; no original parts survive in the butterfly. How is the butterfly made from the goo? Is there an embryo that grows and uses the goo like a yolk sac? Or does the goo somehow arrange itself into new body parts?

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• I’ve read that when caterpillars are in their cocoons, they dissolve completely into goo; no original parts survive in the butterfly. How is the butterfly made from the goo? Is there an embryo that grows and uses the goo like a yolk sac? Or does the goo somehow arrange itself into new body parts?
• If tooth decay is just caused by the bacteria feeding and producing acid, would a person that just used listerine have the same dental health as a person that brushed without flossing?
• How sustainable is our landfill trash disposal model in the US? What's the latest in trash tech?
• How are isotopes used in nuclear physics Experiments isolated?
• My doctor says that chemotherapy works by specifically targeting rapidly-dividing cells, which is how it works to fight cancer and also why it has the side effects that it does. But how does it “know” which cells are rapidly dividing? And how rapidly is “rapidly”?
• How mixable are different types of plastic? Like PET and HDPE?
• What makes a laser shine in a straight line?
• Can animals understand human body language like laughing or smiling?
• How are the triple(or more) parachutes commonly seen on capsules returning from space kept apart?
• How are the needles for Atomic Force Microscopes made, and how can the tip be smaller than the atoms they are manipulating? What are their limitations?
• Could an electric vehicle stand a chance in a racing event?
• If there is an ocean below the ice surface of Europa, is the ice shell buoyant? Geologically supported? Or is it kept in place by the distribution of gravity?
• Lithium batteries are being developed to power cars in response to the decline in fossil fuels, but will lithium eventually run out as well?
• How to calculate eigenvalues in the Kirchhoff's thin plate model?
• Since the event at CERN that proved the existence of Higgs bosons/Higgs field, can we now see this event happen regularly now we know ‘where’ to look?
• How did we get solid matter from light? How did Photons and Electrons create solid matter in the early ages of the universe when everything was insanely hot?
• Is there anywhere other than Earth in the Solar system where you could see a total solar eclipse and/or total lunar eclipse equivalent?
• Why does turning on an electric blender in the kitchen cause my HD antenna signal to go out in a different room?
• Can the human body survive breathing pure oxygen at lower pressures?
• How do we know the earth’s core is super hot and why is it so?

I’ve read that when caterpillars are in their cocoons, they dissolve completely into goo; no original parts survive in the butterfly. How is the butterfly made from the goo? Is there an embryo that grows and uses the goo like a yolk sac? Or does the goo somehow arrange itself into new body parts? Posted: 23 Nov 2017 06:52 PM PST submitted by /u/hilarymeggin [link] [comments]

If tooth decay is just caused by the bacteria feeding and producing acid, would a person that just used listerine have the same dental health as a person that brushed without flossing? Posted: 24 Nov 2017 04:00 AM PST submitted by /u/Xan_derous [link] [comments]

How sustainable is our landfill trash disposal model in the US? What's the latest in trash tech? Posted: 24 Nov 2017 06:08 AM PST submitted by /u/haunchy [link] [comments]

How are isotopes used in nuclear physics Experiments isolated? Posted: 24 Nov 2017 12:59 AM PST From what I know for heavy species like uranium the preferred method is gas centrifuge but it is extremely expensive. Is the same method used for lighter species such as calcium-48? submitted by /u/electric_ionland [link] [comments]

My doctor says that chemotherapy works by specifically targeting rapidly-dividing cells, which is how it works to fight cancer and also why it has the side effects that it does. But how does it “know” which cells are rapidly dividing? And how rapidly is “rapidly”? Posted: 24 Nov 2017 04:53 AM PST submitted by /u/CancerousChameleon17 [link] [comments]

How mixable are different types of plastic? Like PET and HDPE? Posted: 24 Nov 2017 03:13 AM PST submitted by /u/pepijnvw_ [link] [comments]

What makes a laser shine in a straight line? Posted: 24 Nov 2017 02:30 AM PST If you shine a laser into a screen or wall you see a round dot and nothing else around. I surely know that the laser can be very coherent spatially and temporally, but shouldn't in that case behave like a point source and emit in all directions as it comes from a small aperture? (I'm basing my argument in Huygen principle) Is the focus just a game of lenses at the aperture of the laser or I am not understanding something? submitted by /u/MaoGo [link] [comments]

Can animals understand human body language like laughing or smiling? Posted: 24 Nov 2017 03:35 AM PST If was looking at a monkey while laughing, would the monkey know it was causing positive emotions and continue to do so? submitted by /u/tthatoneguyy [link] [comments]

How are the triple(or more) parachutes commonly seen on capsules returning from space kept apart? Posted: 24 Nov 2017 01:05 AM PST Judging by the direction of force by the cord, shouldn't they be pulled together? submitted by /u/DirectorOfStruts [link] [comments]

How are the needles for Atomic Force Microscopes made, and how can the tip be smaller than the atoms they are manipulating? What are their limitations? Posted: 24 Nov 2017 06:11 AM PST submitted by /u/Buck_Thorn [link] [comments]

Could an electric vehicle stand a chance in a racing event? Posted: 23 Nov 2017 02:00 PM PST Telsa released their new roadster just a bit ago, which is a very powerful car, and completely electric. Would an electric vehicle have any benefits in a race? Fuel efficiency or decreasing the weight of the car maybe? submitted by /u/ethanpo2 [link] [comments]

If there is an ocean below the ice surface of Europa, is the ice shell buoyant? Geologically supported? Or is it kept in place by the distribution of gravity? Posted: 23 Nov 2017 11:55 AM PST In other words, how does the solid surface exist with a liquid layer beneath it? Forgive my ignorance if I'm missing any obvious answers to this :D submitted by /u/olafur98 [link] [comments]

Lithium batteries are being developed to power cars in response to the decline in fossil fuels, but will lithium eventually run out as well? Posted: 24 Nov 2017 03:22 AM PST There's a huge push for more sustainable sources of energy because we're running out of fossil fuels, but are lithuim ion batteries that sustainable if the amount of lithium on earth is limited too? Are rechargable batteries truly a renewable source of energy or is it just an alternative to pass the time? What are we gonna do if/when lithium runs out? submitted by /u/mangostarfish [link] [comments]

How to calculate eigenvalues in the Kirchhoff's thin plate model? Posted: 23 Nov 2017 03:53 PM PST I guess this could be either physics or mathematics, but I'll mark it as physics. I've been studying the acoustic properties of coins as a personal hobby related to coin collecting. I found this fascinating article by a French professor at the Bank of France about how to determine if a coin is genuine or counterfeit. This methodology is superb and I even tested it with the type of coin used in the paper with an app called spectroid, and the frequencies match up perfectly. However, the calculations in his paper only relate to a specific type of coin with a specific composition. I'm creating a spreadsheet to allow me to enter a coin's properties to recreate this method for any coin. The formula is pretty straightforward, you just need three parts to determine a given frequency, its shape factor (calculated with the thickness and radius), the metal factor (calculated with the density, Young's modulus, and Poisson's ratio), and the eigenvalue. I figured how to do the shape and metal factors, but I'm stumped by the last part which involves eigenvalues for a free, circular plate. That's an area of math well over my head. If anyone has any background in this subject, could you take a moment and look at Table 3 and explain how I could solve the eigenvalues for λ 2,0 , λ 0,1 , and λ 3,0? The author stated that it involved Bessel function of some kind but that wasn't enough to help me figure out on recreating the values. submitted by /u/alphabetcereal [link] [comments]

Since the event at CERN that proved the existence of Higgs bosons/Higgs field, can we now see this event happen regularly now we know ‘where’ to look? Posted: 23 Nov 2017 06:28 PM PST submitted by /u/Traffodil [link] [comments]

How did we get solid matter from light? How did Photons and Electrons create solid matter in the early ages of the universe when everything was insanely hot? Posted: 23 Nov 2017 12:52 PM PST Pretty self explainatory, but Ive struggled to find answers on google/quora. Anything helps. submitted by /u/GodelianLeviathan [link] [comments]

Is there anywhere other than Earth in the Solar system where you could see a total solar eclipse and/or total lunar eclipse equivalent? Posted: 23 Nov 2017 09:14 AM PST By lunar eclipse equivalent, I mean when a planet or moon is directly between the sun and another moon. submitted by /u/Gentlemanchaos [link] [comments]

Why does turning on an electric blender in the kitchen cause my HD antenna signal to go out in a different room? Posted: 23 Nov 2017 10:37 AM PST submitted by /u/jimdwightstanley [link] [comments]

Can the human body survive breathing pure oxygen at lower pressures? Posted: 23 Nov 2017 12:04 PM PST I know that pure oxygen is poisonous at atmospheric pressure, but wasn't sure about the question in the title. I'm reading the new Artemis book about the moon colony - the book explains they breathe pure oxygen at a lower pressure and I wasn't sure if it was true, and if it is true, what the difference is that allows people to be fine in this situation. Thanks! submitted by /u/jamnjustin [link] [comments]

How do we know the earth’s core is super hot and why is it so? Posted: 23 Nov 2017 10:27 AM PST Also, do other planets have super hot cores as well? submitted by /u/mninml [link] [comments]

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Help us fight for net neutrality!

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• Help us fight for net neutrality!
• In 1996 NASA announced 'evidence of primitive life on early Mars'. In 2000, a second report supported the thesis. What happened next?
• With all this fuss about net neutrality, exactly how much are we relying on America for our regular global use of the internet?
• Do all individual atoms in a solid emanate their own blackbody radiation?
• When beryllium-16 decays and produces 2 neutrons simultaneously, what happens to that dineutron?
• What would our world look like if the collision which ejected the material from which formed the Moon had not occurred? Would there be liquid water? What kind of atmosphere if any? Active geological processes? Life?
• How accurate is the usual picture of the atomic nucleus of a ball/mass of protons and neutrons? What's really happening in the centre of atoms?
• [physics] When I turn off my oven but leave the door closed how does the temperature cool?
• Would there be a benefit to increasing the power of the planetary radar at Arecibo?
• Does photoimmunotherapy (PIT) always followed by surgery for tumour in deep tissue?
• How do we know what the tonsil does?
• How would the government broadcast an emergency message in today's world where a majority of people watch tv through a streaming service?
• What are the social and economic issues associated with biofuels?
• Does dark matter accumulate into dark objects (planets, stars, etc.)? Why?
• If the Earth is closer to the sun for a part of the year, why isn't that summer MUCH hotter?
• How do you define the number of conduction electrons?
• What makes it "impossible" as of now to detect the hypothetical Graviton particle?
• How are Muscle Knots / Trigger Points Created at the Cellular Level?
• Can Dark Matter be explained by scale Invariance of empty space?
• Is deep-earth nuclear fission heating the Earth's interior?
• How in the world could a particle have a 1/2 spin value?
• What is the average density of interstellar clouds and at what density over a given volume is star formation triggered?

Help us fight for net neutrality! Posted: 22 Nov 2017 11:38 AM PST The ability to browse the internet is at risk. The FCC preparing to remove net neutrality. This will allow internet service providers to change how they allow access to websites. AskScience and every other site on the internet is put in risk if net neutrality is removed. Help us fight! https://www.battleforthenet.com/ submitted by /u/MockDeath [link] [comments]

In 1996 NASA announced 'evidence of primitive life on early Mars'. In 2000, a second report supported the thesis. What happened next? Posted: 23 Nov 2017 02:54 AM PST In 1996, NASA published a press release titled Meteorite Yields Evidence of Primitive Life on Early Mars. The release quotes scientists involved in the research making some pretty bold claims: 'we believe we have found quite reasonable evidence of past life on Mars', adding that 'what we have found to be the most reasonable interpretation is of such radical nature that it will only be accepted or rejected after other groups either confirm our findings or overturn them'. Bill Clinton even delivered a speech about the discovery and its implications. An article, titled Ancient Life on Mars?, was published in the 16 August 1996 of Science. (Unfortunately, I don't have access.) Then in 2000, NASA published this: New Report Offers Evidence of Primitive Life on Mars. They said the new research 'strongly support[ed] the primitive life on Mars hypothesis of David McKay and coauthors in 1996'. From having personally worked with NASA scientists who were involved in recent Mars missions, they spoke openly about their belief that our evidence of primitive life on Mars was conclusive, and had progressed their research towards seeking the environmental factors that would allow such life to have developed. Despite all of this, a Google search suggests that the original research has only been referenced once on Reddit – and that was fairly deep into a comment chain, and received only a single upvote. Is this research relatively unknown? If so, why? And if, as I suspect, there are very good reasons that these findings aren't more widely acknowledged, what are they? submitted by /u/hopkinsonf1 [link] [comments]

With all this fuss about net neutrality, exactly how much are we relying on America for our regular global use of the internet? Posted: 23 Nov 2017 04:06 AM PST submitted by /u/badRLplayer [link] [comments]

Do all individual atoms in a solid emanate their own blackbody radiation? Posted: 23 Nov 2017 06:14 AM PST More specifically, will the interior atoms beneath the surface of an object radiate infrared (or other) energy through the surface atoms before exiting the object, or are they simply absorbed? Does this blackbody radiation released from the inner atoms excite or heat the surface atoms slightly? submitted by /u/ssinatra3 [link] [comments]

When beryllium-16 decays and produces 2 neutrons simultaneously, what happens to that dineutron? Posted: 23 Nov 2017 05:19 AM PST When beryllium-16 decays and produces 2 neutrons simultaneously, what happens to that dineutron? What is holding the neutrons together? Gluons? Do the neutrons separate and undergo beta decay? submitted by /u/iserrac [link] [comments]

What would our world look like if the collision which ejected the material from which formed the Moon had not occurred? Would there be liquid water? What kind of atmosphere if any? Active geological processes? Life? Posted: 22 Nov 2017 07:58 PM PST And surface temperature range ? Supposing the giant-impact model for the formation of the Moon is correct, of course. submitted by /u/Gargatua13013 [link] [comments]

How accurate is the usual picture of the atomic nucleus of a ball/mass of protons and neutrons? What's really happening in the centre of atoms? Posted: 22 Nov 2017 09:24 PM PST submitted by /u/Thrownawaybyall [link] [comments]

[physics] When I turn off my oven but leave the door closed how does the temperature cool? Posted: 22 Nov 2017 11:04 PM PST submitted by /u/real-dreamer [link] [comments]

Would there be a benefit to increasing the power of the planetary radar at Arecibo? Posted: 23 Nov 2017 02:21 AM PST Specially, from the "modest" 3 megawatts radiated power it uses now. To something more in line with a modern naval radar that radiates closer to 15 megawatts. Would there be any appreciable increase in resolution to justify the expense? Would it even be able to handle that sort of power? submitted by /u/Komm [link] [comments]

Does photoimmunotherapy (PIT) always followed by surgery for tumour in deep tissue? Posted: 23 Nov 2017 05:49 AM PST As elucidated in article by Mitsunaga, et al (2011) <doi:10.1038/nm.2554>, photoimmunotherapy is a molecular-targeted cancer therapies that utilize photosensitizer molecule conjugated to specific antibody for EGFR (mAbs). The molecule then activated by NIR light irradiation to promote cell death. It obvious for PIT utilization near body surface, but how about tumour located deep inside, that even endoscope can't reach, does it need a surgery for NIR light irradiation? Also, is there a paper that explained about molecular mechanisms of these photosensitizer-conjugated antibody in detail? Would you please share it to me? Thank you. submitted by /u/dprawisuda [link] [comments]

How do we know what the tonsil does? Posted: 23 Nov 2017 03:36 AM PST Some organ functions are obvious, like the heart and eyes. But how would early scientists determine that tonsils function as part of the immune system? submitted by /u/yosimba2000 [link] [comments]

How would the government broadcast an emergency message in today's world where a majority of people watch tv through a streaming service? Posted: 22 Nov 2017 07:47 PM PST Do they have some kind of way to do it through there or would we all be SOL? submitted by /u/FORluvOFdaGAME [link] [comments]

What are the social and economic issues associated with biofuels? Posted: 23 Nov 2017 02:33 AM PST submitted by /u/southcoastuk1 [link] [comments]

Does dark matter accumulate into dark objects (planets, stars, etc.)? Why? Posted: 22 Nov 2017 10:11 PM PST submitted by /u/WhatisAleve [link] [comments]

If the Earth is closer to the sun for a part of the year, why isn't that summer MUCH hotter? Posted: 23 Nov 2017 01:45 AM PST Correct me where I'm wrong. The Earth's rotation around the Sun is oblong. That means that we're much closer for during that part of our rotation. Given that the change in tilt causes the summer to go from North to South and back, then being closer to the sun during that part of our rotation should make us MUCH hotter during that time (or much colder, when further away). A quick search shows Periapsis is 147Mil Km and Apoapsis is 152Mil km So why isn't the difference between January 3 (Northern Winter/ Southern Summer) and July 3 (Northern Summer / Southern Winter) much more different? submitted by /u/KarlJay001 [link] [comments]

How do you define the number of conduction electrons? Posted: 23 Nov 2017 01:32 AM PST From the point of view of solid-state physics, the conductivity and other condensed properties of gold in the bulk behave very well under the approximation that a single electron per atom is the main cause of conduction (the 6s1 electron I would suppose). Yet the image is a little more complicated as the electrons from d bands overlap with the s band. Point: Is there a strict way/rule/method to define how many and which electrons play a role in the conduction of a metal? submitted by /u/MaoGo [link] [comments]

What makes it "impossible" as of now to detect the hypothetical Graviton particle? Posted: 22 Nov 2017 02:07 PM PST Is it the odds of the LHC being able to detect it? Is it too small? Not enough power? The Higgs Boson was said to have a 1 in a billion chance of being detect yet we confirmed its existence. submitted by /u/T00LBOX [link] [comments]

How are Muscle Knots / Trigger Points Created at the Cellular Level? Posted: 22 Nov 2017 12:39 PM PST I've read a few articles through Google Scholar (my background is in biology) but it can be difficult to get full access to relevant information. Can anyone describe what is happening at the cellular level when muscle knots / trigger points are formed? submitted by /u/thatoneguy564 [link] [comments]

Can Dark Matter be explained by scale Invariance of empty space? Posted: 22 Nov 2017 09:13 PM PST this paper here submitted by /u/AtariLynx [link] [comments]

Is deep-earth nuclear fission heating the Earth's interior? Posted: 22 Nov 2017 08:32 AM PST I am having problems with understanding this article: https://blogs.scientificamerican.com/observations/nuclear-fission-confirmed-as-source-of-more-than-half-of-earths-heat/ It states that 'Nuclear Fission Confirmed as Source of More than Half of Earth's Heat'. But then later says: 'The new measurements suggest radioactive decay provides more than half of Earth's total heat'. My understanding is that nuclear fission and nuclear decay are two distinct ways to generate heat. I know that nuclear decay have long been the standard explanation for most of the heat generated. However, this article indicates that nuclear fission might also be playing a part: http://www.nature.com/news/2008/080515/full/news.2008.822.html While in this article they state that contribution from fission would be minor: http://physicsworld.com/cws/article/news/2011/jul/19/radioactive-decay-accounts-for-half-of-earths-heat To be more clear about my question, it relates to the (first) Scientific American article: is the author just confusing the two concepts, or are they saying that fission is the major source? submitted by /u/ccjj [link] [comments]

How in the world could a particle have a 1/2 spin value? Posted: 22 Nov 2017 04:02 PM PST "All particles have a property called spin, having to do with what the particle looks like from different directions. One can illustrate this with the pack of playing cards. Consider first the Ace of Spades. This looks the same only if you turn it through a complete revolution, or 360 degrees. It is therefore said to have spin 1. On the other hand, the Queen of Hearts has two heads. It is therefore the same under only half a revolution, 180 degrees. It is said to have spin 2. Similarly, one could imagine objects with spin 3 or higher that would look the same under smaller fractions of a revolution. The higher the spin, the smaller the fraction of a complete revolution necessary to have the particle look the same. But the remarkable fact is that there are particles that look the same only if you turn them through two complete revolutions. Such particles are said to have spin 1/2." – Stephen Hawking, The Universe in a Nutshell pg. 48 How is this even conceptually possible? submitted by /u/fingurdar [link] [comments]

What is the average density of interstellar clouds and at what density over a given volume is star formation triggered? Posted: 22 Nov 2017 10:37 PM PST For instance the interstellar cloud in the Belt of Orion, what would the average density of these clouds be (amount of hydrogen atoms per meter / kilometer). And what is considered to be the critical density over a large enough area to trigger gravitational collapse of the cloud to initiate fusion that gives birth to a new star. For interrest sake, is this event where critical mass and density is reached followed by star creation instantaneous or does it take years to happen (not referring to the time needed for the gas to accumulate, but referring to the actual event once critical mass and density has been reached). Put another way, would we see a new star being born slowly with a flickering of light or does it appear all bright and blazing out of 'no where' submitted by /u/georgelappies [link] [comments]

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From my kid: Can you put a marshmallow on a stick out into space and roast it with the sun?

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• From my kid: Can you put a marshmallow on a stick out into space and roast it with the sun?
• On my bike: is it more efficient to pedal fast in a low gear or slower in a high gear?
• Is it a coincidence that the moons rotation around its axis matches the duration for its revolution around the earth? Or is there some scientific explanation on how these aligned in such a fashion?
• How, or why, do refraction and dispersion occur?
• I measured an imaginary component of Earth's magnetic field?
• Why can't powerbanks charge while being charged?
• Ask Anything Wednesday - Engineering, Mathematics, Computer Science
• Why are radio waves and microwaves more damaging to the human body than light waves?
• In my Psychology textbook it says that cortisol (a result of stress) reduces telomerase activity, therefore speeding up the aging process, however, I know that exercise also releases cortisol, yet is known to combat aging - how?
• Why do planets orbit in planes?
• Why don't electrons in a superconductor radiate away their energy?
• Can blue light cause cancer? What about UVA? Where is the threshold?
• Why do antiparticles go back in time? For example, when using Feynman diagrams.
• Do we create memories of every single event that happens to us?
• Can dogs, in theory, talk?
• Which is more biologically dangerous, X-rays or Gamma rays?
• Why don't the absorption lines and emission lines in stars cancel out?
• Is there any specific unit or measurement system for poisoning levels in general?
• Do people with bionic limbs still experience phantom pain?
• How is voltage created in a battery cell and how is it maintained at a ~constant value throughout its life/usage?
• Will consistent pressure (i.e. Mewing, Palate Expansions, Chewing, Clenching, etc.) have an effect on Cranio-Facial development?

From my kid: Can you put a marshmallow on a stick out into space and roast it with the sun? Posted: 21 Nov 2017 06:31 PM PST I assume the answer is yes, given the heat of the sun, but... How close would you have to be? Could you do it and remain alive to eat your space s'more given a properly shielded spacecraft? Would the outside of the marshmallow caramelize? How would the vacuum of space affect the cooking process? submitted by /u/StuckInAPuma [link] [comments]

On my bike: is it more efficient to pedal fast in a low gear or slower in a high gear? Posted: 22 Nov 2017 06:05 AM PST As there is sometime confusion: high gear = harder to pedal low gear = easier to pedal submitted by /u/gheeboy [link] [comments]

Is it a coincidence that the moons rotation around its axis matches the duration for its revolution around the earth? Or is there some scientific explanation on how these aligned in such a fashion? Posted: 22 Nov 2017 06:00 AM PST submitted by /u/nutoreddit [link] [comments]

How, or why, do refraction and dispersion occur? Posted: 22 Nov 2017 04:05 AM PST I'm an A-level physics student and we've just covered refraction and dispersion. Our teachers have said we don't need to know why and how they happen but I'd like to know because it'll help me understand everything. They tried to explain but they've told me so many things that contrast that I don't know what's what any more. Here's what they've said to me about dispersion: "It's because frequency is variable." "Frequency is constant and cannot change so it's the wavelength." "It's because the different wavelengths of EM waves travel at different speeds." "Speed is always constant for all EM radiation because it always travels at the speed of light." "It's because the wavelength is variable" - then didn't explain how this affected it. Here's what I've currently done some research to find: Refractive index is different for each different 'colour' of visible light due to the frequency difference so each colour refracts by different amounts. If this is the case, how come we don't get a rainbow in every refraction? Now refraction, which I probably should have started with. I've been told it happens due to the absorption and re-emission of the photons and that this is similiar to what we learned in the photoelectric effect when electrons absorb photons but I've also been told it's due to the oscillating electric field interacting with the greater number of electrons in the denser material causing interference or resistance but I don't understand how this resistance occurs, if this is correct of course. I've been told absorption and emission is both correct and incorrect on different occasions by the same teacher. Many premature thanks, /u/torbear submitted by /u/torbear_ [link] [comments]

I measured an imaginary component of Earth's magnetic field? Posted: 22 Nov 2017 05:13 AM PST We were measuring Earth's magnetic field in three different dimensions to calculate its overall strength and direction (using 3-dimensional Pythagoras). One of the dimensions (we called them x, y, and z, arbitrarily) had a small imaginary value of 6.6x10-5 i Teslas. (This was the dimension we arbitrarily called 'y') This got me researching imaginary magnetic fields, and they are possible and have been measured. But has the Earth itself got imaginary values for the magnetic field at some points or was it a mistake of measurement? BTW our final measurement was 3.49 x 10-5 Tesla at an angle of 74.01 degrees compared to the official measurement at our location of 4.92 x 10-5 Tesla at 68.24 degrees. submitted by /u/Hawksteinman [link] [comments]

Why can't powerbanks charge while being charged? Posted: 22 Nov 2017 05:04 AM PST submitted by /u/ravenQ [link] [comments]

Ask Anything Wednesday - Engineering, Mathematics, Computer Science Posted: 22 Nov 2017 07:06 AM PST Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer Science 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]

Why are radio waves and microwaves more damaging to the human body than light waves? Posted: 21 Nov 2017 06:34 PM PST In science class we learned that exposure to waves with a shorter wavelength are more dangerous (ex. x-rays). We also learned that microwaves and radio waves have a longer wavelength than light. Why, then, are we concerned about microwaves and radio waves causing cancer but not visible light? submitted by /u/Da_Pen [link] [comments]

In my Psychology textbook it says that cortisol (a result of stress) reduces telomerase activity, therefore speeding up the aging process, however, I know that exercise also releases cortisol, yet is known to combat aging - how? Posted: 21 Nov 2017 08:43 PM PST submitted by /u/athill01 [link] [comments]

Why do planets orbit in planes? Posted: 21 Nov 2017 07:02 PM PST Why does the dust orbiting stars that will later form planets lie in the same plane and not in a sphere or cloud around the star? submitted by /u/weewoahbeepdoo [link] [comments]

Why don't electrons in a superconductor radiate away their energy? Posted: 22 Nov 2017 02:20 AM PST I heard a current in a superconductor can in theory flow indefinitely We know change in velocity causes electrons to radiate I can't think of a non curved closed superconducting loop Am I wrong somewhere? If not, why doesn't the energy of superconducted electrons radiate away? submitted by /u/garblz [link] [comments]

Can blue light cause cancer? What about UVA? Where is the threshold? Posted: 22 Nov 2017 06:53 AM PST Since we're on the topic of electromagnetic radiation causing cancer: What's the wavelength that divides cancer causing and non-cancer causing EM radiation? And if it lines up with the edge of what humans can see visually, is that just a coincidence? Is there an evolutionary reason for that? submitted by /u/Redowadoer [link] [comments]

Why do antiparticles go back in time? For example, when using Feynman diagrams. Posted: 22 Nov 2017 12:20 AM PST submitted by /u/golden_shrimp [link] [comments]

Do we create memories of every single event that happens to us? Posted: 21 Nov 2017 03:49 PM PST I am reading about people who have an autobiographical memory and I find it fascinating. Is the implication though, that normal people are also creating these memories and we just can't access them? Or are these people actually creating more memories? If you enhanced my memory recall, would I be able to go back in time 5 years ago to a specific day and remember exactly what happened in each moment? Or is my brain just not even recording those memories? Or are they being recorded as short term, but only the important ones are being moved to long term and over time the short term is being deleted? Don't get me wrong, I dont want to remember that I ate toast with butter on July 12th, 2012, but I am curious if I Could remember. submitted by /u/_magical_narwhal_ [link] [comments]

Can dogs, in theory, talk? Posted: 21 Nov 2017 05:42 PM PST Are their vocal functions capable of producing words submitted by /u/ih8brocoli [link] [comments]

Which is more biologically dangerous, X-rays or Gamma rays? Posted: 22 Nov 2017 05:30 AM PST In my line of work I perform inspections of aircrafts utilizing X-rays. On my latest safety course, an assertion was made that working with X-ray tubes was more dangerous than to work with ionizing gamma ray isotopes. Is there any truth to this? submitted by /u/Crackdiver [link] [comments]

Why don't the absorption lines and emission lines in stars cancel out? Posted: 22 Nov 2017 04:36 AM PST I get how an absorption line is meant to happen -- if a photon of just the right energy interacts with the atom, the photon will be absorbed by the electron, and the electron will be kicked into a higher energy state. But then surely, a short time later, the electron will relax back into the lower energy state and re-emit the photon with the exact same energy. So in a star, where presumably the atoms are absorbing and re-emitting photons all the time, how come these two processes don't "cancel out"? The rate of absorption has to equal the rate of emission. Why, in the starlight, do we still see a deficit of photons with the energies corresponding to e.g. Hydrogen absorption lines? Where have they all gone? EDIT: One way is that the relaxation process can emit multiple photons if the electron was excited to a very high state, but that doesn't work for the n=2 -> n=1 transition. submitted by /u/gatherinfer [link] [comments]

Is there any specific unit or measurement system for poisoning levels in general? Posted: 22 Nov 2017 04:28 AM PST I've tried to search on Google, but the closest result I've expected is the unit of Rad) which is an unit for absorbed radiation dose. But what I'm looking for is some kind of poison measurement system that can tell people in general how poisonous some molecules or materials can be(or how lethal some poisons from some snakes are). As an analog, we have weight measurement system like g, kg (in metric system) or pounds, ounces (imperial system) and this system give us an idea in general how heavy and how light some things are. *And sorry for my bad English, as it's not my first language in the first place and I reckon that I'm still learning it everyday... submitted by /u/thepilleum [link] [comments]

Do people with bionic limbs still experience phantom pain? Posted: 21 Nov 2017 05:04 PM PST submitted by /u/RialFade [link] [comments]

How is voltage created in a battery cell and how is it maintained at a ~constant value throughout its life/usage? Posted: 21 Nov 2017 05:18 PM PST I've learned about redox reactions but can someone explain it in a way that deals with the concepts in physics e&m like charge, voltage, work, e field etc... It seems like the amount of chemical "stuff" in the battery has only to do with the amount of work the battery can do, so what creates and maintains the voltage? submitted by /u/pantheontits [link] [comments]

Will consistent pressure (i.e. Mewing, Palate Expansions, Chewing, Clenching, etc.) have an effect on Cranio-Facial development? Posted: 21 Nov 2017 07:10 PM PST Theoretically, this should work. Any time you stress bone enough, it creates micro-fractures. If you did this consistently and for long enough, the bone would remodel itself thicker as it repaired the fractures to resist the stress more. I don't think you would have to hit the bone that hard, either. Dunno how visible or permanent any change would be though. Examples of Mike Mew's theories https://www.youtube.com/watch?v=iqlxAdmky10 https://www.youtube.com/watch?v=eh9OqEd5z1k https://www.youtube.com/watch?v=QCNqbvOALZI EVEN MORE PROOF: Facial changes following treatment with a removable orthodontic appliance in adults. http://www.ncbi.nlm.nih.gov/pubmed/15641449 Experimental and postexperimental effects of posteriorly directed extraoral traction in adult Macaca fascicularis http://www.sciencedirect.com/science/ar ... 167990277X Expansion/Facemask Treatment of an Adult Class III Malocclusion http://www.jaypeejournals.com/eJournals ... &isPDF=YES Continuous forces are more effective than intermittent forces in expanding sutures http://www.researchgate.net/publication ... ng_sutures Bone remodeling to correct maxillary deficiency after growth cessation http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3700158/ Age changes in the human frontozygomatic suture from 20 to 95 years. http://www.researchgate.net/publication ... o_95_years sutures dont fuse until the 8th decade of life http://www.ncbi.nlm.nih.gov/pubmed/1062937 skeletal maxillary advancement is possible in adults http://www.ncbi.nlm.nih.gov/pubmed/21211241 submitted by /u/EzraMillersJawline [link] [comments]

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