Why does it take so long for our eyes to adjust to the dark but it only takes a few seconds to adjust to a bright environment? | AskScience Blog

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Saturday, April 16, 2022

Why does it take so long for our eyes to adjust to the dark but it only takes a few seconds to adjust to a bright environment?

Why does it take so long for our eyes to adjust to the dark but it only takes a few seconds to adjust to a bright environment?


Why does it take so long for our eyes to adjust to the dark but it only takes a few seconds to adjust to a bright environment?

Posted: 15 Apr 2022 07:44 PM PDT

Walking outside you blink a few times and then can see but if you turn off a light, you can't see as well as if you were in the dark for awhile. Are we just evolved to see in bright situations?

submitted by /u/Topazler
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Help me answer my daughter: Does every planet have tectonic plates?

Posted: 16 Apr 2022 06:24 AM PDT

She read an article about Mars and saw that it has "marsquakes". Which lead her to ask a question I did not have the answer too. Help!

submitted by /u/awkwardexitoutthebac
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How does Transit photometry measure size and orbit radius, and how does it tell them apart?

Posted: 16 Apr 2022 06:45 AM PDT

When looking straight on an object in front of an light source, an object half as big but double as close would look the same as an object twice as big but half as close, so how do methods of transient photometry diferentiate that, considering they just measure the dip in brightness as the planet passes in front of the star?

submitted by /u/Seph_the_this
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Do genetic diseases that don't show up until later in life get passed on more frequently?

Posted: 15 Apr 2022 09:53 PM PDT

It seems like they would. Because if a diseases that showed up earlier in life, say while you were still fertile, then there's more of a chance of you dying/becoming incapacitated and not being able to reproduce and therefore not able to pass on the disease.

submitted by /u/SinJinQLB
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Would it be a problem to not have a pulse?

Posted: 15 Apr 2022 08:35 PM PDT

Would it be a problem to have a continuous flow of blood instead of a rhythmic pulse? I mean specifically in an artificial heart or something.

I tried researching myself but struggled. Thanks!

submitted by /u/MossBlock
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How do killer t cells distinguish between good cells and cancer cells?

Posted: 15 Apr 2022 07:53 PM PDT

Do corals have cnidocytes?

Posted: 15 Apr 2022 08:12 PM PDT

Corals are classified as cnidarians, but I've never heard of a coral sting before.

submitted by /u/The_Middler_is_Here
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What's the difference between agglutination and immune complex in immunology?

Posted: 16 Apr 2022 06:40 AM PDT

Do dry dirt and dust helps prevent natural metal corrosion?

Posted: 16 Apr 2022 06:03 AM PDT

The dry dirt and dust that collects near metal things helps maintain those against corrosion or it's indifferent if it stays clean of dirt and dust? Or worse?

Was wondering because where is dirtier, the metal ( coated ) have less sign of corrosion.

submitted by /u/RisottoPensa
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Does a 500cc 2-stroke engine at its most efficient RPM have double the CFM as a 500cc 4-stroke at its best RPM?

Posted: 15 Apr 2022 08:04 PM PDT

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