Why do meth users perform repetitive actions?

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• Why do meth users perform repetitive actions?
• Does having a having a larger skull/brain cavity increase your chances of suffering a cuncussion upon impact ?
• Why are clouds relatively flat toward the bottom?
• Since a day is about 23 hours and 56 minutes, how does this not cause clocks (that go on a 24 hour day) and the day to be out of sync?
• I learned as a kid, as soon as you see lightning, you count Mississippi's and whatever number you get up to when you heard the thunder, that's supposedly how many miles away the lightning struck. Is this scientifically accurate?
• If a magnet is stuck to iron ect. Is the magnetic field on the opposite opposite rhe attached surface negatively affected or otherwise lessened? If so how does this differ for less dense/denser metals?
• If the universe is flat, isn't the edge actually quite close?
• Why aren't reflections in a mirror clear when I'm not wearing glasses?
• Face of the moon?
• What has been going on in Hawaii?
• How are ions made artificially?

Why do meth users perform repetitive actions? Posted: 30 Jul 2018 07:01 PM PDT I've tried googling why but couldn't find anything. I'm interested if we know exactly why meth makes people do repetitive stuff and what receptors it affects to make this happen. submitted by /u/ecksdeecolonthree [link] [comments]

Does having a having a larger skull/brain cavity increase your chances of suffering a cuncussion upon impact ? Posted: 30 Jul 2018 02:57 PM PDT Edit : apparently I can't even formulate a sentence properly. Sorry about that. submitted by /u/averhaegen [link] [comments]

Why are clouds relatively flat toward the bottom? Posted: 30 Jul 2018 03:07 PM PDT submitted by /u/SplungerPlunger [link] [comments]

Since a day is about 23 hours and 56 minutes, how does this not cause clocks (that go on a 24 hour day) and the day to be out of sync? Posted: 30 Jul 2018 09:58 PM PDT submitted by /u/fromRonnie [link] [comments]

I learned as a kid, as soon as you see lightning, you count Mississippi's and whatever number you get up to when you heard the thunder, that's supposedly how many miles away the lightning struck. Is this scientifically accurate? Posted: 30 Jul 2018 07:56 PM PDT submitted by /u/OpheliaOnFire [link] [comments]

If a magnet is stuck to iron ect. Is the magnetic field on the opposite opposite rhe attached surface negatively affected or otherwise lessened? If so how does this differ for less dense/denser metals? Posted: 30 Jul 2018 07:32 PM PDT submitted by /u/Jai_Wen [link] [comments]

If the universe is flat, isn't the edge actually quite close? Posted: 30 Jul 2018 10:44 AM PDT Title. I read that the universe is flat, so what's stopping us from going "up" or "down" to see what's at the edge? Like, it's probably nothing, but still. submitted by /u/DrainageCity [link] [comments]

Why aren't reflections in a mirror clear when I'm not wearing glasses? Posted: 30 Jul 2018 10:22 PM PDT This may be a very simple question but it is very interesting. I am nearsighted, so I need glasses to see things clearly that are far away. If I look at a mirror that is only a few inches away, at a distance that I would normally be able to see things clearly without glasses, why is it that things that are far off are still blurry even though they are reflections on a surface that is so close? submitted by /u/Patheticflower [link] [comments]

Face of the moon? Posted: 30 Jul 2018 07:29 AM PDT I know we see the same side of the moon. How much of a variance is there in the rotation? Will there be a noticiable difference in say a hundred, a thousand or ten thousand years? submitted by /u/takeoutboy [link] [comments]

What has been going on in Hawaii? Posted: 30 Jul 2018 10:03 AM PDT To clarify, I've tried doing my own research, but I'm basically the opposite of a geologist in terms of knowledge on the subject. Every effort I've made to find out what's going on has been thwarted by end of the world, text to speech, jet fuel can't melt steel, Satan's face can be seen in the smoke type of info. Where, or how can I find credible info on the eruptions? If you're willing to go beyond that, I'd love some professional insight aswell. How serious were the eruptions? Will they continue? I allready understand that what was witnessed is the exact thing that formed Hawaii in the first place. I'm merely curious what it's current status is aswell as expectations for the future. submitted by /u/maki-tiger [link] [comments]

How are ions made artificially? Posted: 30 Jul 2018 01:50 PM PDT I know how ions occur naturally but i always wondered how they are made artificially. submitted by /u/GreenOrange123 [link] [comments]

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Why don't babies get stretch marks as they grow?

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• Why don't babies get stretch marks as they grow?
• How did we conclude that iris and fingerprints are unique for each and every individual?
• How did they film the atomic bomb ?
• Can air pollution be accurately translated into smoking cigarettes? Is living in large Asian cities as bad as smoking, for example, 5 or 10 cigarettes a day?
• Can non waterfowl birds poo midflight?
• When a star becomes a black hole, does it happen gradually or suddenly?
• People stop taking their antibiotics before their prescribed dose is finished all the time. How has this not created more superbugs?
• what's the difference between black and red hematite ?
• Is there a magnetic field surrounding electric pole wires and if so, does it have any significant affect?
• How does a Lunar Eclipse, like the recent blood moon, happen?
• When we get sick with the common cold, what is actually happening to cause the symptoms?
• What happens to a bee that is transported a long distance? Can it find its way home?
• What are the consequences of CPT symmetry being broken?
• Why do somethings change color when they get wet?
• How many mass extinctions were there, and how do we know?
• Why do some bubbles last longer than others?
• Why does hair growth stop at a certain point on your arms, legs etc., but not your head?
• What did the Lamprey evolve from?
• How is canine bite force measured?
• Is cold water more effective at exstinguishing fires than hot water?

Why don't babies get stretch marks as they grow? Posted: 29 Jul 2018 07:37 PM PDT submitted by /u/courtroombrown123 [link] [comments]

How did we conclude that iris and fingerprints are unique for each and every individual? Posted: 30 Jul 2018 04:21 AM PDT It is commonly known fact that no two persons can have the same fingerprints (and iris). But how can we conclude that? What is the research behind this? What are the chances that someone else on this planet in the present, past or future does not have the same biometrics as I do? submitted by /u/johnwick76 [link] [comments]

How did they film the atomic bomb ? Posted: 30 Jul 2018 04:55 AM PDT I don`t know if this is the right subreddit . But how did they film the atomic bomb explosion back in the day without ruining the footage / camera , And who was the poor soul who went and fetched them I am referring to this close up footage when you see the cars/ trees blown away by the shock wave https://www.youtube.com/watch?v=5gD_TL1BqFg https://www.youtube.com/watch?v=ztJXZjIp8OA Thank you ! submitted by /u/AnduDahaka [link] [comments]

Can air pollution be accurately translated into smoking cigarettes? Is living in large Asian cities as bad as smoking, for example, 5 or 10 cigarettes a day? Posted: 30 Jul 2018 02:54 AM PDT After googling cigarettes pollution equivalent I found a lot of reports and studies that claim that the air pollution in large cities can be accurately represented as smoking X cigarettes a day. Is this true and scientific? Especially in terms of causing cancer and heart disease. Here's an example of a chart I found online: Air Pollution Location, Equivalent in cigarettes per day US, average 0.4 EU, average 1.6 China, average 2.4 Beijing, average 4.0 Handan, average 5.5 Beijing, bad day 25.0 Harbin, very bad day 45.0 Shenyang, worst recorded 63.0 From http://berkeleyearth.org/air-pollution-and-cigarette-equivalence/ Some other links include: http://www.myhealthbeijing.com/pollution/is-pm2-5-from-air-pollution-the-same-as-from-smoking/ http://www.lung.org/our-initiatives/healthy-air/outdoor/air-pollution/particle-pollution.html https://www.epa.gov/particle-pollution-and-your-patients-health/health-effects-pm-patients-lung-disease https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4765726/ https://www.digitaltrends.com/home/air-pollution-cigarettes/ https://www.bbc.co.uk/news/resources/idt-f0dd0cc0-1e47-417c-9b44-802c24e63c28 https://www.citylab.com/environment/2018/04/how-much-are-you-smoking-by-breathing-urban-air/558827/ Are these scientifically correct, can breathing the air be represented in the number of cigarettes a person would smoke that day? Can it be "measured" that way in terms of causing harm to our bodies? And what would be the major differences and discrepancies between the two? Thank you submitted by /u/was0435 [link] [comments]

Can non waterfowl birds poo midflight? Posted: 29 Jul 2018 02:24 PM PDT We are having a lively debate on if no non waterfowl have the ability to poo during flight. A quick Google search came up inconclusive. Some sites suggested they don't have the proper muscles. submitted by /u/buda104 [link] [comments]

When a star becomes a black hole, does it happen gradually or suddenly? Posted: 30 Jul 2018 04:17 AM PDT submitted by /u/FiveYearsAgoOnReddit [link] [comments]

People stop taking their antibiotics before their prescribed dose is finished all the time. How has this not created more superbugs? Posted: 30 Jul 2018 06:06 AM PDT submitted by /u/___Guitarmadillo___ [link] [comments]

what's the difference between black and red hematite ? Posted: 30 Jul 2018 03:38 AM PDT submitted by /u/JackRogers3 [link] [comments]

Is there a magnetic field surrounding electric pole wires and if so, does it have any significant affect? Posted: 30 Jul 2018 03:02 AM PDT I was leaving the gym last night and it was pretty quiet and all I could hear was the crackling sound of electricity passing through wires of the electric poles. This made me remember something I learned about in physics about how electric currents create a force field (or magnetic field...same thing?) around the wire where current is flowing. Does this mean that there is a force field surrounding the electric pole wires? If this force field exists, how strong is it and are there any implications or precautions taken because of this? submitted by /u/CheeseSlap- [link] [comments]

How does a Lunar Eclipse, like the recent blood moon, happen? Posted: 30 Jul 2018 06:46 AM PDT I fully understand how a solar eclipse works/happens but cannot for the life of me get my head around a Lunar eclipse. Can someone explain it to me in Layman's terms, as I feel I'm being really, really dense? submitted by /u/TheTraveller2016 [link] [comments]

When we get sick with the common cold, what is actually happening to cause the symptoms? Posted: 29 Jul 2018 06:54 PM PDT ie. Why does swallowing become painful? Why does our nose end up getting blocked? (And why only one nostril?). etc submitted by /u/Immotommi [link] [comments]

What happens to a bee that is transported a long distance? Can it find its way home? Posted: 29 Jul 2018 11:42 AM PDT We're on a cross country road trip, and found we had a stowaway bumblebee. We got it out of the car maybe 100 km away from where we likely picked it up, but if it hadn't been noticed it would have been taken a good 700 km away. Assuming it made it out of the car okay, what would a bee do in these circumstances? Would it try to find his way back to its hive? If so, would it even be possible for it to make its way back? If there's no way for the bee to get back to its own hive, could a beekeeper integrate it into a new hive? submitted by /u/arymede [link] [comments]

What are the consequences of CPT symmetry being broken? Posted: 30 Jul 2018 01:33 AM PDT submitted by /u/nikhailhatesreddit [link] [comments]

Why do somethings change color when they get wet? Posted: 30 Jul 2018 12:56 AM PDT submitted by /u/Boneric [link] [comments]

How many mass extinctions were there, and how do we know? Posted: 29 Jul 2018 03:33 PM PDT I've heard that there have been five mass extinction events through Earth's history, and that an increasing number of scientists say we're in the middle of a sixth. But I've also heard that those five happened in the last half-billion years. Did no others happen earlier? How do we know a mass extinction event happened in the first place—do we just not have enough data from further back than 500 million years to tell? submitted by /u/Sollost [link] [comments]

Why do some bubbles last longer than others? Posted: 29 Jul 2018 12:56 PM PDT I was blowing bubbles at my GF from a bubble wand and I noticed that some of the bubbles exploded as soon as they touched a new surface (bed sheets/carpet) while others rested on the new surface and exploded after a while. What was the process that the bubbles went through before exploding? Why did some take more time to burst while others exploded upon impact? I'm guessing the surface tension of the bubbles that "held on" happened to be stronger, but if that is the case then what caused them to eventually pop? If a bubble is strong enough to hold on why (without any outside intervention) would it explode? submitted by /u/yububy [link] [comments]

Why does hair growth stop at a certain point on your arms, legs etc., but not your head? Posted: 29 Jul 2018 08:58 AM PDT submitted by /u/CashBag [link] [comments]

What did the Lamprey evolve from? Posted: 29 Jul 2018 07:38 PM PDT I don't know if this is the best place to ask this, but after reading ASOIaF I made the mistake of googling this disgusting creature and having several nightmares, I started to ask - What did it come from? What region of the world is it from? Why is it so successful biologically? submitted by /u/Flowers818 [link] [comments]

How is canine bite force measured? Posted: 29 Jul 2018 10:42 PM PDT I am involved in a project that is trying to simulate a dog bite on a plastic enclosure. I can directly measure the geometry of dog teeth and creat rough approximations to use for testing, but the appropriate force to apply is giving me a lot of trouble. Everything I can find lists bite force for canines in PSI, which seems to be a nonsensical unit for this application - can someone explain how bite force is measured? When a source claims that a dog has a bite force of 350 PSI, what area is that measured over? Is it the entire footprint of the mouth? submitted by /u/TonkaTuf [link] [comments]

Is cold water more effective at exstinguishing fires than hot water? Posted: 29 Jul 2018 09:59 PM PDT submitted by /u/DepressedIBStudent [link] [comments]

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What is happening in my body when I rest in between sets at the gym? Why does resting longer allow me to lift more the next set?

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• What is happening in my body when I rest in between sets at the gym? Why does resting longer allow me to lift more the next set?
• Is there a reason, either mechanically or hydrodynamically, that a ship couldn’t have its propeller in the front, instead of behind? E.g. as a ‘puller,’ like a plane, rather than a ‘pusher?’
• Does the moon have the same affect on clouds as it does the ocean?
• Is ice a rock?
• Electron vs light microscope resolution, how does shorter wavelength achieve a higher resolution?
• How was Fermat's Last Theorem eventually proved?
• A material's electrical resistance increases as its temperature increases. Is this relationship still true after the material changes state?
• The Median Nerve branches to innervate three fingers. How is possible to move each finger independently and "select" for a specific neuronal branch?
• What did dinosaur genitals look like?
• Why can’t certain types of glass like frosted glass be recycled?
• What happens to the mitochondria as an animal ages? Are their fewer per cell? Are mitochondria less efficient?
• How many antigens do typical vaccines contain today, how many did they contain a few decades ago, and how many can an infant handle at one time?
• How is the voltage inducted in a conductor influenced by the surface bordered by the conductor?
• Are there any known mutations to the hox genes of moths?
• How much energy does it take to sustain a nuclear fusion reaction for a given time?
• [medicine] [chemistry] Is it possible to design a drug that protects the brain from hypoxia by altering the NMDA receptor ion channel to prevent mass calcium influx?
• Do any factors alter the rate at which radioactive nuclides decay?
• How is vocal pitch determined?
• How do cockroaches affect our ecosystem?

What is happening in my body when I rest in between sets at the gym? Why does resting longer allow me to lift more the next set? Posted: 28 Jul 2018 11:46 PM PDT submitted by /u/Grazie_ragazziii [link] [comments]

Is there a reason, either mechanically or hydrodynamically, that a ship couldn’t have its propeller in the front, instead of behind? E.g. as a ‘puller,’ like a plane, rather than a ‘pusher?’ Posted: 28 Jul 2018 12:07 PM PDT submitted by /u/Liberal_Redneck [link] [comments]

Does the moon have the same affect on clouds as it does the ocean? Posted: 28 Jul 2018 04:43 PM PDT submitted by /u/RandomAss6969 [link] [comments]

Is ice a rock? Posted: 28 Jul 2018 12:07 PM PDT submitted by /u/Thealphastab [link] [comments]

Electron vs light microscope resolution, how does shorter wavelength achieve a higher resolution? Posted: 29 Jul 2018 03:14 AM PDT Electron Microscopes use electron beams which are at a higher energy and thus have a shorter wavelength than light microscopes using light, and this leads to a higher resolution. Why is it wavelength and not amplitude that dictates the resolution of the probe? Is amplitude dependent on energy level, and therefore electron waves have a shorter wavelength and subsequently shorter amplitude? Thanks in advance submitted by /u/WILMANATOR [link] [comments]

How was Fermat's Last Theorem eventually proved? Posted: 28 Jul 2018 01:09 PM PDT I am more looking for an overview than an in-depth answer, as I know its extremely complicated. submitted by /u/Aoioa [link] [comments]

A material's electrical resistance increases as its temperature increases. Is this relationship still true after the material changes state? Posted: 29 Jul 2018 07:40 AM PDT For example if the resistance of copper increases as the temperature increases but the copper then melts, what will happen to the resistance? submitted by /u/Forya_Cam [link] [comments]

The Median Nerve branches to innervate three fingers. How is possible to move each finger independently and "select" for a specific neuronal branch? Posted: 28 Jul 2018 03:40 PM PDT My initial assumption is that when a neuron is branched (has more than one end point), that all branches would be stimulated simultaneously. However, if this were true in the example provided, this would mean all three fingers would move simultaneously. What mechanisms, then, are in place to selectively stimulate specific neuronal branches? submitted by /u/Spill_the_Tea [link] [comments]

What did dinosaur genitals look like? Posted: 28 Jul 2018 07:41 AM PDT Every cgi T Rex or Triceratops that I've ever seen just looks like a Ken doll. They had to be absolutely hung, right? submitted by /u/spencerisbatman [link] [comments]

Why can’t certain types of glass like frosted glass be recycled? Posted: 28 Jul 2018 01:07 PM PDT Having no luck googling this! It seems frosted glass can't be recycled along with a few other types, but no explanation as to why :( submitted by /u/vcalover [link] [comments]

What happens to the mitochondria as an animal ages? Are their fewer per cell? Are mitochondria less efficient? Posted: 28 Jul 2018 10:40 AM PDT submitted by /u/xaplexus [link] [comments]

How many antigens do typical vaccines contain today, how many did they contain a few decades ago, and how many can an infant handle at one time? Posted: 28 Jul 2018 08:44 PM PDT I read a pamphlet at my sons doctors office a few years ago that explained that vaccines contain x amount of antigens, and that our bodies can actually handle many many more times that. It also said that the number of antigens in a dose has been drastically reduced over time so that we're getting fewer overall even with an increase in number of vaccines. I've been trying to explain this to an anti-vaxxer but its hard to do without actual numbers, and I have no idea how to find that information again. Thanks! submitted by /u/lfpod [link] [comments]

How is the voltage inducted in a conductor influenced by the surface bordered by the conductor? Posted: 28 Jul 2018 11:48 AM PDT Ok, so I get the fact that in order for a voltage to be inducted in a conductor, the said conductor has to delimit a surface and the electromagnetic field has to be alternative. So, can someone explain to me the actual reason why this happens only when the conductor can be seen as the border of a surface? Also, I know that the voltage is equal to the speed at which the magnetic flux decreases through the surface, but why is that? I'd like to get some insight on this one since my Electromagnetic Fields teacher is not really willing to answer our questions. P. S. : If you can include why the field has to be a time function that would be great submitted by /u/GanjalfTheGreeny [link] [comments]

Are there any known mutations to the hox genes of moths? Posted: 28 Jul 2018 02:17 PM PDT So today is as out walking my dog and i found a moth sat on the ground, I picked him up, because it was windy, and was going to put him down but realised it had 2 vestigial legs on one side of its face. I know its a thing in flies however I haven't heard of it in moths? Thought I'd ask here as I'm quite interested. submitted by /u/Toby539 [link] [comments]

How much energy does it take to sustain a nuclear fusion reaction for a given time? Posted: 28 Jul 2018 08:03 PM PDT submitted by /u/nucleardickhead [link] [comments]

[medicine] [chemistry] Is it possible to design a drug that protects the brain from hypoxia by altering the NMDA receptor ion channel to prevent mass calcium influx? Posted: 28 Jul 2018 01:06 PM PDT Neurons in the vertebrate CNS are peculiarly susceptible to programmed cell death because excitatory-neurotransmitter receptors can't selectively admit specific ions and over-excitation leads to mass calcium influx, which triggers apoptosis. Is it possible for a drug to alter the NMDA receptor ion pore to exclude calcium ions? This would increase a patient's likelihood of surviving transient hypoxia or anything that prevents the brain from meeting its anonymously high caloric demands. If I'm not completely mistaken, that is. I know magnesium interacts non-competitively with the NMDA receptor ion channel to diminish calcium conductance. Could we create a more effective, pharmacological substance that would prevent rapid calcium influx when the ion pumps fail due to loss of ATP? And would this extend the "three minutes" rule? submitted by /u/DramShopLaw [link] [comments]

Do any factors alter the rate at which radioactive nuclides decay? Posted: 28 Jul 2018 09:38 AM PDT Do temperature, pressure or other conditions accelerate the rate of nuclear decay in a sample? submitted by /u/DrProfJoe [link] [comments]

How is vocal pitch determined? Posted: 28 Jul 2018 01:59 PM PDT Is it genetic, environmental, a combination of the two? submitted by /u/Mr_Bob_Waffle [link] [comments]

How do cockroaches affect our ecosystem? Posted: 28 Jul 2018 11:25 AM PDT submitted by /u/igai_ [link] [comments]

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