Why can't we see all of the black dots simultaneously on this illusion? | AskScience Blog

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Monday, September 12, 2016

Why can't we see all of the black dots simultaneously on this illusion?

Why can't we see all of the black dots simultaneously on this illusion?


Why can't we see all of the black dots simultaneously on this illusion?

Posted: 11 Sep 2016 09:00 PM PDT

Where do squirrels go during hurricanes?

Posted: 11 Sep 2016 04:57 PM PDT

How Well Do Giraffe Species Interbreed?

Posted: 11 Sep 2016 08:20 AM PDT

Part of the reason given why their identification as 4 species was not noticed is ability of giraffes to Interbreed. How successful are progeny?

Bonus: Could interbreeding be used to aid in conservation efforts, by introducing more diversity into depopulated a giraffe species?

submitted by /u/iamthegodemperor
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[neuroscience] Whаt bеnеfіts dоеs еасh stаgе оf slеер hаvе?

Posted: 11 Sep 2016 04:32 PM PDT

I have always thought of epoxies as two part mixtures that react. Now I see single stage epoxies all over. How do they catalyze?

Posted: 11 Sep 2016 08:10 PM PDT

If a plant grows from a cutting from another one, are they genetically identical?

Posted: 11 Sep 2016 07:10 PM PDT

Is there a correlation between the fat content of milk and it's protein concentration?

Posted: 11 Sep 2016 05:57 PM PDT

Basically, as I'm given to understand, proteins are amino acids while fats come from glycerol chains; and while I understand that unused proteins can be turned into fat in the human body, I wanted to know whether or not the protein and fat concentrations of foods were in any way related. Simply looking at nutritional labels of different types of milk, I found that higher fat percent tended to also have higher protein percent, but I can't find an explanation as to why. (sorry for mistakes, this is my first time posting)

submitted by /u/SaitamaMasterRace
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Why can't an object/ship in stationary orbit just use thrusters to descend straight down in a controlled manner?

Posted: 11 Sep 2016 07:38 PM PDT

Why are solar panels in fields all angled a certain way, as opposed to pointing towards the sun?

Posted: 11 Sep 2016 07:04 AM PDT

edit: towards the sky, not the sun.

submitted by /u/tmello01
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Can a collapsing star have such great mass that the black hole formed completely absorbs the supernova and the star simply "goes dark?"

Posted: 11 Sep 2016 03:37 PM PDT

How can birds fly in a storm/heavy downpour?

Posted: 11 Sep 2016 03:04 PM PDT

I was under the impression that birds use updrafts and rising heated air to float along and glide with their wings. No?

submitted by /u/goateguy
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What's the brain's role in interpreting music into dancing? How does that process work at a physiological level?

Posted: 11 Sep 2016 05:55 AM PDT

I'm not really familiar with ballets but I'm taking about the type of dancing you may see at a hip hop concert that usually involves highly choreographed dance routines. Also how people dance at clubs and how their moves change depending on song / genre. Or maybe bobbing your head while driving to work and listening to the radio.

Is it some process that excites certain nerves and makes you want to move to the beat? How do we make the choice of what move goes with the beat?

submitted by /u/FrancisOntheHood
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Physical significance of S(q) structure factor against scattering vector q?

Posted: 11 Sep 2016 04:21 PM PDT

In diffraction experiments it is common to graph the structure factor against the scattering vector q. My question is what exactly do the peaks in the resultant plot from x-ray diffraction of neutron diffraction physically correspond to? Also, I think it would help to frame the answer in the case of a non periodic structure (or perfect crystal scenarios). Any help would be appreciated.

submitted by /u/AisleEight
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Why can our immune systems get rid of some viruses, where others can stay in the body for the rest of our lives?

Posted: 11 Sep 2016 03:03 PM PDT

How come that the immune system can get rid of, for example, the influenza virus in about a week where HIV stays forever? What makes a virus more dangerous from a different one?

submitted by /u/Shedvoy
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How do in-cell organelles "know" what to do, and how do they move?

Posted: 11 Sep 2016 12:46 PM PDT

I remember from high school biology that there's a lot of activity happening inside cells. DNA is unzipped and copied and proteins are manufactured at the ribosome, then packaged at the Golgi. How are any of these capable of moving or performing any action at all, and how do they know to do the right thing?

submitted by /u/numb3red
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What is the Corealis Effect like at the equator?

Posted: 11 Sep 2016 03:15 PM PDT

Given E = p * c, why can't energy be "converted" into momentum?

Posted: 11 Sep 2016 02:33 PM PDT

What determines a mach/shock diamond's color?

Posted: 11 Sep 2016 01:50 PM PDT

I see that some planes create a blue and orange color. However, planes like the SR-71 Blackbird in this photo and the F-35 in this create only one color, not both. Sometimes they even come out purple and pink. The space shuttle's engine's also pure blue

submitted by /u/boeing186
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How do we calculate wavelegnth using pixel number and intensity?

Posted: 11 Sep 2016 08:53 PM PDT

Is there a formula or some general method?

submitted by /u/mickandrorty312
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Why does it look like people on the ISS are upside down?

Posted: 11 Sep 2016 02:32 PM PDT

It's as if all blood pools in their heads. Is that the reason, and if so, why?

Example 1

Example 2

submitted by /u/ercafnerc
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