Pages

Saturday, August 19, 2017

Does sipping water vs 'chugging' water impact how the body processes water?

Does sipping water vs 'chugging' water impact how the body processes water?


Does sipping water vs 'chugging' water impact how the body processes water?

Posted: 18 Aug 2017 08:25 AM PDT

Does sipping over time vs 'chugging' water impact the bodies ability to hydrate if the amounts of water are the same?

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

Do radios work in Faraday cages? Could you theoretically walkie-talkie a person standing next to you while in one, or do they block radios altogether?

Posted: 19 Aug 2017 05:56 AM PDT

And would a Faraday cage prevent radio signals from OUTSIDE reaching the inner radio?

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

How can gravity bend light if the speed of light is constant?

Posted: 19 Aug 2017 02:40 AM PDT

When natural satellites get get closer to the object they are orbiting they speed up. However, light can't speed up, so how can it bend without speeding up in the direction it is bending?

It's called gravitational lensing, so one could think it works in the same way lenses bend light, but lenses bend light because of an interaction between light and particles in the lens.

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

Why do we breathe out of a dominant nostril which also changes throughout the day? And why does this dominance change?

Posted: 18 Aug 2017 10:12 PM PDT

How does a seed inside a "wet" fruit know when it's in wet dirt before it sprouts? Why doesn't it sprout inside the fruit?

Posted: 18 Aug 2017 07:42 PM PDT

How did humans evolve to have different blood types and what is the evolutionary advantage for having done so?

Posted: 18 Aug 2017 04:55 PM PDT

Does alcohol or drugs affect people with autism differently? If they do, in what way?

Posted: 18 Aug 2017 05:22 PM PDT

How does your stomach/body know that a food you've eaten contains toxins, leading to vomiting?

Posted: 18 Aug 2017 06:33 PM PDT

How does software reduce video quality? Are there multiple possible lower quality versions?

Posted: 19 Aug 2017 06:16 AM PDT

When it rains on the ocean, does the fresh rainwater harm the marine plankton? If not, why not?

Posted: 18 Aug 2017 05:10 PM PDT

Why do dogs lick their owners/companions?

Posted: 18 Aug 2017 07:41 PM PDT

Why do dogs lick their owners ? Is it because they are trying to show affection. If so, why do they lick them?

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

How Does Gravity Change As You Approach The Center Of A Gas Giant?

Posted: 18 Aug 2017 10:04 PM PDT

If a planet is a gas giant(Like Jupiter), would gravity be less powerful closer to the center? Since less of the mass is below you to pull you down?

submitted by /u/PieGuyThe3rd
[link] [comments]

Solid water as ice floats in its liquid form. Are there other solids that float in their own liquid forms?

Posted: 18 Aug 2017 05:51 PM PDT

Could someone please explain to me entropy?

Posted: 19 Aug 2017 04:56 AM PDT

I've gone and done some readings about it but can't really wrap my head around the concept. So far, I've gotten that it's a measurement of orderliness and higher entropy is more disorder. How does this relate entropy to the heat death of the universe? Can some one please explain to me in relatively simple terms since I can be quite slow in the head sometimes.

submitted by /u/ringbear9000
[link] [comments]

Does our body really use a minimum of 1500 calories a day? If so, what are we using it for?

Posted: 18 Aug 2017 05:30 PM PDT

I remember reading that even if you just lie in bed all day and do nothing, your body still burns 1500 calories. Is this true? What is our body using that for?

submitted by /u/bb_2005
[link] [comments]

Do animals practice recreational competition with each other? Can they feel joy from winning a game and understand rules?

Posted: 18 Aug 2017 05:39 PM PDT

Sure, dogs can learn tricks and are usually positively reinforced with a treat, like a simple example of the "choose a hand" game or a cup shuffle, but does an animal like a horse understand why it's racing and "enjoy" victory, or does it just know "this is an instance when I've been trained to run?"

I know animals in nature compete with each other for things like alpha status, which is obviously something that certain animals are driven towards, but do animals ever recreationally compete in nature, or is competition/survival separate in animal nature than recreation/pleasure?

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

How long ago did the modern chicken lose its ability to fly?

Posted: 18 Aug 2017 04:14 PM PDT

How does quantum field theory explain spin?

Posted: 18 Aug 2017 02:28 PM PDT

I have tried to find the answer to this online, but I can't seem to find a satisfying answer.

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

If light is constantly speeding towards us from the edge of the observable universe, have any new galaxies or stars popped "into existence"?

Posted: 18 Aug 2017 03:09 PM PDT

How would/does microgravity affect the function of an induction motor?

Posted: 18 Aug 2017 06:42 PM PDT

How does/would microgravity affect the function of an induction motor? If the stator was not anchored to anything would part of it's torque be transfer to itself resulting in the stator spinning counter directionally to the rotor and decreased rotational speed for the rotor relative to the initial position of the stator? For another example on Earth a motor spins it's rotor clockwise at 1rpm, would and attempt to run this motor in microgravity result in the rotor spinning clockwise at .5rpm and stator spinning counterclockwise at .5rpm?

How does the mass of rotor and stator play into this?

Basically in space will the stator stay?

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

Why does sperm light up under blacklight?

Posted: 18 Aug 2017 04:08 PM PDT

What would've been the physical process behind the feared second explosions during the Chernobyl disaster?

Posted: 18 Aug 2017 04:03 PM PDT

I've had a sort morbid fascination with the Chernobyl disaster for quite some time, and while I have found plenty of good material on the hypotheses for the initial explosions that blew the lid of the reactor casing (hydrogen explosion due to zirconium-steam/graphite-steam reactions and steam pressure explosion), I have not really managed to wrap my head around what the nature of the second explosion would be.

I've read that it would've been a steam explosion but in an interview in the 2006 documentary "The Battle of Chernobyl" it is stated that they feared it would be on the magnitude of a 2-5 megaton nuke which I just can't imagine a steam explosion doing.

So, TL;DR; What would've actually happened if the lava-like reactor goop hit the basins of water beneath the reactor?

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

Friday, August 18, 2017

What affect does the quantity of injuries have on healing time? For example, would a paper cut take longer to heal if I had a broken Jaw at the same time?

What affect does the quantity of injuries have on healing time? For example, would a paper cut take longer to heal if I had a broken Jaw at the same time?


What affect does the quantity of injuries have on healing time? For example, would a paper cut take longer to heal if I had a broken Jaw at the same time?

Posted: 17 Aug 2017 11:44 AM PDT

Edit: First gold, thank you kind stranger.

submitted by /u/Atari1729
[link] [comments]

Why are airplane propellers generally in the front and boat propellers in the back?

Posted: 18 Aug 2017 07:08 AM PDT

How do our bodies develop a resistance to poisons by ingesting small amounts over a long time? Does the body develop antibodies similar to fighting diseases?

Posted: 18 Aug 2017 06:33 AM PDT

[Biology/Ecology] How are buildings in Venice able to be half submerged in water, but mold-free and habitable?

Posted: 17 Aug 2017 11:19 PM PDT

Houses here get an inch of water from a broken pipe and they get black mold throughout the entire house. How is it possible that houses in Venice, often hundreds of years old, can have water literally lapping up onto the threshold, but you never hear about mold, mildew, or even building material erosion?

submitted by /u/asgard13
[link] [comments]

How does a cooling system work?

Posted: 18 Aug 2017 06:25 AM PDT

I can comprehend a heating system, it can basically work by giving energy and heating the thing you want to heat. But how does a cooling system work, how can you reduce the energy inside the system by giving energy to it?

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

How do satellites stay on their course? Wouldn't the slightes change make them slowly rotate off their path leading them into crashing down on to earth?

Posted: 18 Aug 2017 05:48 AM PDT

How do they stay up there? In my mind satellites need to like a 'perfect speed' just not to be too fast or too slow, but is that even possible?

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

How is usable energy extracted from a fusion reactor?

Posted: 18 Aug 2017 02:11 AM PDT

A fission reactor ultimately heats water to produce steam to spin a turbine to generate electricity.

I assume a fusion reactor ultimately heats water ....>>.... generate electricity.

But how do we get from a hot plasma in a tokamak to heating water? How do we get from inertial confinement to heating water??

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

If you become decapitated, do you die instantly or are you still conscious for a short time before dying?

Posted: 17 Aug 2017 05:26 PM PDT

Can bacteria become cancerous?

Posted: 17 Aug 2017 07:24 PM PDT

So in this video about some kind of Japanese smoked fish they mentioned how the smoking helps preserve the fish by killing bacteria.

Could it be possible that the carcinogens in the smoke (or generally in nature) could alter the genome of bacteria, becoming similar to cancer in humans? If so would a bacterial cancer cell have the same behaviour as a human one?

Edit: forgot to add the main question, could this lead to a dangerous amount of bacteria growing in smoked foods?

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

Is there such a thing as space coordinates?

Posted: 17 Aug 2017 04:48 PM PDT

Let's say we wanted to broadcast some message into space, for possible detection by intelligent life anywhere. How could we communicate our location in the universe?

submitted by /u/Farty-McFartface
[link] [comments]

Is there any substance which is less toxic the more of it you consume?

Posted: 17 Aug 2017 12:15 PM PDT

As the title says, is there some form of poison or toxin which becomes less harmful the more of it is in your system?

submitted by /u/c3n7uri0n
[link] [comments]

Why do phone screens/tvs/monitors always look awful and pixelated when recorded from a phone?

Posted: 17 Aug 2017 02:42 PM PDT

In the detectors at CERN they measure the position and velocity of particles however, the uncertainty principle forbids it, how is it possible? I realize I probably just misunderstand or don't completely understand the principle.

Posted: 17 Aug 2017 02:10 PM PDT

What's the difference between anti bacterial and anti microbial?

Posted: 17 Aug 2017 04:57 PM PDT

I was thinking today about how some things are classified as "anti microbial" whereas others are "anti bacterial". Are these essentially the same thing? It seems like "anti bacterial" is used more medically.

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

What's done with the remains from diamond cutting?

Posted: 17 Aug 2017 09:42 AM PDT

If someone quits smoking without having contracted cancer, do their odds of getting cancer eventually return to those of non-smoker?

Posted: 17 Aug 2017 04:39 PM PDT

Or has some irreparable biological damage been done, which increases the likelihood of cancer over time?

Edit: my bad for typo in title :(

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

How is lithium made in stars?

Posted: 17 Aug 2017 10:39 PM PDT

As I understand it hydrogen atoms brought together by gravity collide under high temperatures to create helium and release light and other forms of energy. Does this mean helium does the same to create litium? Or is it a mix of hydrogen and helium under great pressure and high temperature colliding to create lithium? If at all possible can you expand upon this and the reactions of the heavier elements that create even heavier elements in say our sun for example?

submitted by /u/Phantompain23
[link] [comments]

Does a fish see clearly when out of the water?

Posted: 17 Aug 2017 09:37 AM PDT

Anytime I open my eyes underwater, everything is blurry, but I can see fine otherwise. Is it the same way for a fish? Can they see fine underwater and then have trouble seeing out of the water? Is there even any way to test this?

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

Why is carbon so rare compared to oxygen in the inner solar system? Why don't we have tons of carbide minerals on earth?

Posted: 17 Aug 2017 02:19 PM PDT

Thursday, August 17, 2017

Desiccated spruce branches will curl up or down depending on weather conditions, and have been used as artisanal weather predictors in Eastern North America. What particular properties does the structure of spruce branches have which makes them behave in the way they do?

Desiccated spruce branches will curl up or down depending on weather conditions, and have been used as artisanal weather predictors in Eastern North America. What particular properties does the structure of spruce branches have which makes them behave in the way they do?


Desiccated spruce branches will curl up or down depending on weather conditions, and have been used as artisanal weather predictors in Eastern North America. What particular properties does the structure of spruce branches have which makes them behave in the way they do?

Posted: 17 Aug 2017 05:27 AM PDT

Reference: http://survinat.com/2014/02/spruce-barometer/

I'm particularly curious about what, in the wood structure, induces such a specific directionality to this behavior.

submitted by /u/Gargatua13013
[link] [comments]

How do scientists stop the environment from causing wave function collapse when doing QM experiments?

Posted: 17 Aug 2017 01:26 AM PDT

My assumption has always been that things like the double slit experiment must be performed in a vacuum to prevent the air from interfering with the electrons being fired. However, is it possible to completely prevent ALL particles from contaminating the environment? For example photons emitted from the equipment, stray cosmic rays, etc?

How is this overcome?

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

How does synesthesia work? Is it possible to acquire/induce it in a non-synesthete brain?

Posted: 16 Aug 2017 10:06 PM PDT

Did trees bear fruits before there were mammals to eat them?

Posted: 17 Aug 2017 06:32 AM PDT

As per my understanding (which is limited), fruits exist so that mammals will eat them and spit out the seeds far away from the parent tree, spreading the seeds around. Because of this, would it be biologically viable/possible for fruits to exist before mammals had evolved to the point where they could eat them?

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

Can bugs with an exoskeleton (ants, beetles, scorpions etc.) survive a cracked skeleton or heal themselves?

Posted: 16 Aug 2017 07:20 PM PDT

How much more energy will fusion of lithium-6 deuteride release than fission of uranium-235?

Posted: 17 Aug 2017 12:04 AM PDT

In terms of thermonuclear bombs, the secondary stage (comprised of 6LiD which is compressed and heated to induce D-T fusion) supposedly releases many times more energy than the primary stage (comprised of a supercritical mass of U-235 or plutonium with a small amount of deuterium and tritium to boost the explosion) despite there not being a whole lot more material.

If you have, say, 1kg of U-235 that undergoes fission and 1kg of 6LiD used in a fusion reaction, how much more energy will the fusion release than the fission? I've heard that it's around 7x more but I can't be sure.

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

Burnt toast tasted very similar to burnt popcorn because it has a distinct "burnt" taste. What is it exactly that we are tasting, and why is it common between completely different foods?

Posted: 17 Aug 2017 07:24 AM PDT

Why do we grab a part of our body when it gets injured?

Posted: 17 Aug 2017 07:09 AM PDT

For instance, when I get punched in the arm I usually absentmindedly put my arm around that spot. Is it only to protect it from more damage?

submitted by /u/Skeletron430
[link] [comments]

Can we make small, lab-sized, analyzable nuclear explosions?

Posted: 17 Aug 2017 06:44 AM PDT

[Chemistry] Why does plastic turn white when it's twisted or bent?

Posted: 17 Aug 2017 04:28 AM PDT

Are seagulls able to drink salt water to stay hydrated? Do they have an internal system to filter salt water?

Posted: 16 Aug 2017 03:36 PM PDT

How do companies put such specific expiration dates on products that sometimes go years into the future?

Posted: 16 Aug 2017 06:23 PM PDT

How was helium discovered?

Posted: 16 Aug 2017 08:09 PM PDT

This question bridges history and chemistry but I'm wondering if anyone has better information about the history of Helium's discovery.

Did Janssen and Lockyer work together to determine that the yellow line was proof of a new element? And how did Frankland factor in?

Did Langlet and Cleve isolate Helium from Uranium ores or did Ramsay? Did two independent discoveries occur at roughly the same time? How controversial was the yellow line discovery? Did most or all of the scientific community accept that as proof of Helium's existence?

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

Why do children wet the bed, yet adults are able to control their bladders even though regardless of age we are both asleep?

Posted: 16 Aug 2017 04:27 PM PDT

Do larger people have larger organs?

Posted: 16 Aug 2017 05:14 PM PDT

I'm an above average male, 6 foot 7 inches and 240ish pounds. Are my internal organs like my liver or heart significantly larger than someone like my s/o who is 5 foot 5 inches and 130 pounds?

submitted by /u/56Mikes
[link] [comments]

Is there magnetic field around charge moving with constant linear velocity?

Posted: 17 Aug 2017 01:22 AM PDT

If so, please explain how...

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

How do we obtain our gut flora?

Posted: 16 Aug 2017 05:37 PM PDT

How do you tell a boy vs girl via ultrasound?

Posted: 16 Aug 2017 08:43 PM PDT

I'm assuming later in pregnancy you can just look for the obvious penis vs. no penis, but in the earlier stages, how can the doctor tell? Is the penis just harder to spot by the untrained eye or are there other ways of knowing?

(I tried Googling the answer but the results but the results were all worthless mommy blogs. If anyone knows a good academic resource for questions such as these I'd love to hear about it!)

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

What is the focal length of the human eye(s)? Is it the same for every healthy human?

Posted: 16 Aug 2017 08:36 PM PDT

Would someone please explain what's going on to cause the effect in this gif?

Posted: 16 Aug 2017 10:26 PM PDT

According to where I saw it, it's ink dropped into alcohol. (sorry I can't be more specific)

http://i.imgur.com/2aWrJu5.gifv

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

When a straight rope is flicked at one end, a 'wave' appears in the rope travels down its length.. What determines the speed at which this wave travels?

Posted: 17 Aug 2017 05:52 AM PDT

What "pushes" teeth out?

Posted: 16 Aug 2017 11:34 AM PDT

Came to think of this after discovering my wisdom teeth started coming out in the wrong direction and thus, pushing the rest of the teeth. So how do teeth move forward with such a strong push?

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