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Friday, September 15, 2017

There are Glasses that make Colorblind People see colors. Do they work the other way around too?

There are Glasses that make Colorblind People see colors. Do they work the other way around too?


There are Glasses that make Colorblind People see colors. Do they work the other way around too?

Posted: 15 Sep 2017 02:40 AM PDT

What happens if "normal" people wearing them? Do they see B&W? Could the glasses be modified to do so?

submitted by /u/hdrr_at
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Do non-humans exhibit signs of autism/autism spectrum disorders?

Posted: 14 Sep 2017 06:31 PM PDT

When riding my bicycle, I can stop pedalling, make a 180-degree turn, and the bike still continues moving (though at much lower speed) in the opposite direction. Why?

Posted: 14 Sep 2017 11:29 PM PDT

Momentum is directional and as far as I can see there is no other input energy being applied to the bike (or me), so how can it move in the opposite direction?

submitted by /u/stupid2017
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If electricity from wall outlets is AC, how come some plugs have a left-right orientation?

Posted: 14 Sep 2017 08:07 AM PDT

As in, some plugs have one side bigger, which forces a specific orientation when plugging it into the outlet.

submitted by /u/linearly-independent
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When two neutron stars merge and cause a ripple of gravitational waves, what happens to the objects (planets, asteroids) near the merger?

Posted: 14 Sep 2017 05:16 PM PDT

Do objects get morphed as the fabric of spacetime stretches and shrinks? If a human was close enough, would they feel the gravitational wave?

submitted by /u/Duke_Koch
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Does a Field in Physics always exist (as an expample: the electric field) even when no Particles of that field interact with eachother?

Posted: 15 Sep 2017 01:13 AM PDT

Are there organisms that have characteristics that suggest they are part of a different kingdom of life?

Posted: 14 Sep 2017 05:45 PM PDT

The newest missile launch by North Korea says it reached an apogee of 478 miles. How?

Posted: 14 Sep 2017 05:26 PM PDT

I think this question comes down to my misinterpretation of what the 'altitude' is supposed to represent. It says it reached an altitude of 478 miles. But the altitude of our atmosphere is ~300 miles and the ISS is in orbit at ~254 miles. Clearly I'm not understanding what that value is actually showing so it would be wonderful if someone could clear that up! Here is the article I'm referencing http://www.bbc.com/news/world-asia-41275614

submitted by /u/Aplasmabanana
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Why does enriched uranium explode when blasted into more enriched uranium?

Posted: 14 Sep 2017 05:26 PM PDT

Why does uranium release such a large amount of energy when slammed into more uranium, such as with the Little Boy nuclear bomb?

submitted by /u/Bubbaspiff
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Are the recent record high seismic readings for the Yellowstone Supervolcano anything to be worried about?

Posted: 14 Sep 2017 05:59 PM PDT

Would scientists be able to warn people before it erupted. I'm pretty paranoid about end of the world scenarios.

submitted by /u/Moltenmelt1
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Does evolution work faster for beings with a shorter lifespan since their genes get passed on faster?

Posted: 14 Sep 2017 03:22 PM PDT

Is it possible for the Cassini to take and send some final pictures while entering the surface of Saturn, right before (or maybe even during) it's burning to ash?

Posted: 14 Sep 2017 12:58 PM PDT

Why do we need quantum theories to explain what happens to light with multiple polarization filters ?

Posted: 14 Sep 2017 05:14 PM PDT

Hi,

I just watched a video from YouTube channel minutephysics. It's this video.

The first thing that crossed my mind was - "wait, are you joking me?". Now, don't get me wrong, I'm not here to joke around and I don't want to sound arrogant, but that's exactly what my thought was when I saw them putting a filter between filters like a magician trying to do a trick. I even asked myself - "But why didn't you put a filter over a 90 degree rotated filter and then tell me that it got brighter? Huh? Gotcha!".

Then I watched it until the end, and I realized that they went too far in quantum state of particles and the determinism logic which isn't intuitive to anyone, and that my assumptions were totally based on classical physics or don't need no quantum theories like the entanglement in order to explain to me what happened in the video.

I also jumped to the comments section and I could see a few people asking the same thing, but always getting redirected to how the entanglement doesn't work that way, even though they didn't mention any entanglement at all.

So, this is what I think happens. The logic is very simple.

First, we have 2 filters. The filter A, and filter C. The filter C is rotated 45 degrees, which lets 50% of light, or in other words, blocks 50% of it. We also happen to know that a filter rotated 22.5 degrees (half of 45 degrees), lets 85% of light, or again, blocks 15% of light, which magically is not 25%, but I'll get to it.

Now, when we introduce a filter B, which we put in between filters A and C, we see the light getting brighter. But, if we concluded that filters rotate the wave of light, the filter C is now ALSO rotated 22.5 degrees to the filter B, which blocks only 15%. The math is 15% + 15% = 30%. Of course that it is brighter.

Now, the tricky and the second part is about the thing I said I'll get to it, and what I also wanted to ask reddit. What if the light wave (or filters) are simply not distributed as a standard gaussian distribution model, but they have a slightly smaller variance (the deviation from a standard mean), so that the half from a mean angle gives probability density of 15% and not 25% ?

Wouldn't that explain everything? Why would we need entangled particles, realism and locality to explain this? What am I missing?

submitted by /u/flackjap
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When burning food to see how much calories an item has when there is alot of cellulose (fiber)?

Posted: 14 Sep 2017 06:32 PM PDT

Cellulose (Fiber) doesn't turn into energy in the body but it does burn, asking for a science competition (Food Science)

submitted by /u/Mudkipslaps
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Is it possible to "record" a brain hearing sound and reproduce the sound from the recording?

Posted: 14 Sep 2017 10:03 AM PDT

I was wondering if it's possible to monitor a brain and record whatever it hears and use that to reproduce the same sounds? (More specifically, could you use whatever information you receive to differ from one musical note from another?)

submitted by /u/SjonniBara
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Will Saturns ring form into moons eventually?

Posted: 14 Sep 2017 07:26 AM PDT

If so, how long until the event completes, and how many moons would there be?

submitted by /u/Deadrinker
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Are there any other planets in our solar system that experience totality during an eclipse?

Posted: 14 Sep 2017 10:47 AM PDT

How do all of these NK, ocean-impacting missile launches effect the ocean's biosphere?

Posted: 14 Sep 2017 07:08 PM PDT

How do magnets magnetize other objects?

Posted: 14 Sep 2017 10:38 PM PDT

I left a magnet in a bucket of screws and when I took the magnet out I noticed some of the screws were magnetized and clung to others. How does this happen?

submitted by /u/Bay_Visions
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Thursday, September 14, 2017

How do spacecraft like Cassini avoid being ripped to shreds by space dust?

How do spacecraft like Cassini avoid being ripped to shreds by space dust?


How do spacecraft like Cassini avoid being ripped to shreds by space dust?

Posted: 13 Sep 2017 04:06 PM PDT

Why does Mars have a slightly larger axial tilt than Earth without similar evidence of a proto-planet impact?

Posted: 13 Sep 2017 05:49 PM PDT

I learnt that Earth has its axial tilt because of an impact with a proto-planet that also created the moon. While Mars also has two moons, they are 106 and 107 times smaller than our own moon. Why doesn't Mars posses a similarly proportional sized moon?

submitted by /u/hitchano
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How did we discover the shape of our galaxy?

Posted: 13 Sep 2017 03:08 PM PDT

Since nothing man made (that I know of) has left the galaxy how did we figure out it was spiral and not something else?

submitted by /u/epichippo512
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What stops micro chips in humans from being rejected by the body similar to splinters or other foreign bodies?

Posted: 13 Sep 2017 08:23 AM PDT

Title basically explains it all. Recently had stitches that were in for too long which caused the skin too swell and become irritated and was thinking what sort of effects it has on microchips or any other sort of technology that involves planting something under the skin(not organs or living material).

submitted by /u/Roy6651
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What is the evidence supporting the effect of "leadership" or "team-building" courses in business?

Posted: 13 Sep 2017 04:56 PM PDT

I know that these courses are often ridiculed in popular culture but they seem to be fairly widespread. Is there any good evidence supporting their use? Do we know how long the effects last?

submitted by /u/Criticalist
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Could an creature have both an endo and exoskeleton? Do any?

Posted: 13 Sep 2017 03:22 PM PDT

Why aren't we using gravitational potential batteries instead of electro-chemical ones for large scale power storage?

Posted: 14 Sep 2017 12:58 AM PDT

I have heard of an idea that we could dig holes and put weights on vertically moving platforms. When there is excess power generation motors lift the weights. When the power is needed we simply let the weights descend turning electric generators. It seems to me that this way of power storage can be build on a huge scale and would be much simpler to make than enormous batteries. With power storage for cities solar panels and wind turbines can store power for cloudy windless days. Why aren't we using this technology? Is it even possible?

submitted by /u/Captain_Fatbeard
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In hormonal birth control, why don't the placebo pills cause a woman's natural cycle to start?

Posted: 13 Sep 2017 10:16 AM PDT

I understand that hormonal birth control pills work by preventing your body from producing it's own hormones (and therefor preventing the 28 day female menstrual cycle from beginning). However, when you take hormonal birth control pills the last week or so is always placebo pills. Why doesn't this withdrawal from hormone ingestion start the 28 day menstrual cycle and cause the hypothalamus and pituitary gland to begin secreting the necessary hormones? Additionally, how come if you miss one active pill it is said that your body can start it's natural cycle but taking 7 consecutive placebo pills does not?

submitted by /u/12marshmallows
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Why do Lithium Ion batteries, like in a smartphone, lose their capacity over time? Can it be remedied?

Posted: 13 Sep 2017 10:14 PM PDT

For instance, my ~3 year old phone has a noticeable drop in capacity over the years. What causes this? Is there any way to slow its "degradation" down, to make it last even longer?

submitted by /u/alexthemetalhead
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How accurate are DNA tests in determining ancestry?

Posted: 13 Sep 2017 03:13 PM PDT

Particularly things like 23andMe and ancestry.com. Can they really determine your ancestors' ethnicities, or is it all a scam?

submitted by /u/Al5at
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Why two electrons with same spin cannot co-exist but protons can?

Posted: 14 Sep 2017 04:17 AM PDT

I dont have proper knowledge about particle physics and Quantum mechanics but from what i know I would like to ask that if 2 electrons of same spin cannot exist in the same orbital (pauli exclusion) then how can several protons exist in the nucleus together (and neutrons too)?

Please do provide some links from where I can get more knowledge of this field. Im 16 btw.

submitted by /u/devanshh
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This graph appears to show a decline in measles cases prior to the introduction of the measles vaccine. Why is that?

Posted: 14 Sep 2017 08:36 AM PDT

What is the likelihood of the LIGO Gravity Wave Detection Results being errant?

Posted: 13 Sep 2017 11:03 PM PDT

I have been lightly paying attention to the LIGO events the last couple of years and I understood that their original detection and publication and subsequent detections to have all been published and vetted with a high degree of significance.

However when I brought up the LIGO detection tonight at a local astronomy club meeting as observational evidence of BH merger, the physics teacher in the club adamantly denied the papers/detectors validity, saying that the amount of error in the study was too high and the initial paper had been widely discredited.

I'd never heard of that, and I thought the studies were still being celebrated for their success. Is there a problem with the detection or their publications?

submitted by /u/jorshrod
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What liquid is the wettest?

Posted: 13 Sep 2017 10:15 PM PDT

I'm sure wettest is the wrong word. I'm trying to ask what liquid would soak through the most layers of say paper towels or whatever. Like per tablespoon which liquid soaks the most.

submitted by /u/laptopquesting
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What was the first empirical evidence of the existence of black holes?

Posted: 13 Sep 2017 10:05 PM PDT

Why does hyperkalamia depolarize a cardiac muscle cell?

Posted: 13 Sep 2017 09:05 PM PDT

I learned recently that hyperkalamia inhibits cardiac muscle function because the excess K+ ions outside the cell keep the K+ ions inside the cell from diffusing out during the repolarization phase. What I can't figure out is this: given that the membrane potential is the difference between the charge outside and inside the cell membrane, and that in hyperkalamia, there is an unusually high concentration of K+ ions outside the cell AND inside the cell, why doesn't the membrane potential stay about the same (allowing the cell to keep working normally)? Thanks!

submitted by /u/maturoblast
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Why are the different gas giants different colors?

Posted: 13 Sep 2017 06:26 PM PDT

Presumably the material they were made of was all the same gas cloud. Why do the different planets then have such dramatically different colors?

submitted by /u/samcobra
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Is there a giant rocky planet ?

Posted: 13 Sep 2017 06:11 PM PDT

Why almost every giant planet ( Jovian ones ) are gas planet ? Is there a possibility of a rocky giant planet with the size of Jupiter ?

submitted by /u/CreativeThienohazard
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What is dust and where does it come from?

Posted: 13 Sep 2017 05:31 PM PDT

Are humans born with all the veins and arteries they'll ever have or do more grow as the older?

Posted: 13 Sep 2017 02:56 PM PDT

If they gain more how does this growth process take place with disrupting blood flow?

submitted by /u/READERmii
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Why don't positrons appear in the standard model but electrons do?

Posted: 13 Sep 2017 07:39 PM PDT

Positrons are just electrons with the same mass but positive charge right? So why are they not as "fundamental" as electrons? I understand that other anti-matter particles are just different combinations of particles on the standard model, but how can that be the case for positrons?

submitted by /u/Mad_Max_The_Axe
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When did the habit of writing st, nd, rd and th in superscript after numerals become a thing in English, and is writing "10th", for example, actually correct (especially in typed documents or on the Internet), or should it also be superscripted, strictly speaking?

Posted: 13 Sep 2017 08:43 PM PDT

Why does all visible light travel at the same speed through a vacuum, but not through a medium?

Posted: 13 Sep 2017 05:49 PM PDT

Additionally, does this apply for all other types of radiation in the electromagnetic spectrum? E.g. radio waves travel slower through a medium than UV waves?

submitted by /u/Cassiopeia_June
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Wednesday, September 13, 2017

What's the difference between an X-ray laser and a regular laser?

What's the difference between an X-ray laser and a regular laser?


What's the difference between an X-ray laser and a regular laser?

Posted: 12 Sep 2017 11:03 PM PDT

Would there be any?

submitted by /u/141_1337
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How many turns does the copper coil in a 2 MW wind turbine have?

Posted: 12 Sep 2017 08:13 AM PDT

How does beta decay transform a proton into a neutron and other particles? Aren't neutrons more massive?

Posted: 13 Sep 2017 06:02 AM PDT

I was researching about fusion, especially with Hydrogen into Helium and was wondering how the beta decay even occurs/happens when neutrons are larger than protons yet somehow the protons transform into neutrons and other particles?

submitted by /u/JackTalle
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[Astronomy]Is it possible that any of the objects on the solar system used to be in orbit around the star that birthed the nebula that birthed our sun?

Posted: 13 Sep 2017 07:24 AM PDT

How do frogs avoid getting poisoned when they eat poisonous insects?

Posted: 12 Sep 2017 02:40 PM PDT

When a photon is "absorbed" what happens to the photon and it's energy?

Posted: 12 Sep 2017 10:34 PM PDT

How did we determine the contents within a Neutron Star?

Posted: 12 Sep 2017 12:42 PM PDT

Upon watching a video about Neutron Stars, I wonder how we are able to calculate the contents within the Neutron Star without being near one. I presume we're using waves of the sort, but how is our current method of determining a Neutron Star's contents done and how is it considered reliable?

submitted by /u/Zinx10
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How do cells transfer from the fetus to the mother (Microchimerism)?

Posted: 12 Sep 2017 02:13 PM PDT

To my understanding, the body would reject foreign cells, so how and why would the body allow cells permanently?

submitted by /u/OverweightRoshan
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Do butterflies remember being caterpillars?

Posted: 12 Sep 2017 10:45 AM PDT

Do geologists know how high the highest mountains on Earth were in the past? Was there a time when it was significantly higher or lower than it is now?

Posted: 12 Sep 2017 07:19 PM PDT

Would watching videos at 1.5 or 2x the speed affect learning?

Posted: 12 Sep 2017 10:17 AM PDT

I understand speed watching tv shows is becoming more popular but does it affect how our brain processes the information? For example if I choose to watch my university lectures at 1.5 the speed would this take away from retention. Does anyone know of any studies about this?

submitted by /u/Aussie_bro
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Physicist entangles the spin of 2 particles, A and B. If Physicist measures Particle A and finds "spin up" -- but Particle B is left undisturbed -- does B remain in superposition until measured? Or has B's wavefunction collapsed to "spin down" simultaneously with the measuring of A?

Posted: 12 Sep 2017 02:20 PM PDT

Thank you kindly, geniuses.

submitted by /u/fingurdar
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In mediums other than a vacuum, different wavelengths of light travel at different speeds. Does this mean that a certain wavelength of light escapes the sun more often?

Posted: 11 Sep 2017 11:55 PM PDT

This is in reference to the idea that photons bounce around in the sun's mantle for eons before they escape.

Does faster speed increase the amount of collisions the photon goes through as well? Are photons of a certain wavelength more likely to exit because they have chances due to the greater number of collisions?

submitted by /u/deecodes
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Does battery charging time also decrease with battery capacity?

Posted: 12 Sep 2017 02:50 AM PDT