/r/askscience

Year:

Only show posts with narrations

Does six minutes of sun exposure 10 times throughout the day provide the same tanning (skin damage) effect as one continuous hour?

460 upvotes • cyberwretch

Mark as read: Add to a list

When you are scared or excited can your heart actually "skip a beat"?

460 upvotes • Guerdonian

Mark as read: Add to a list

Is charge imaginary mass?

460 upvotes • Feynstein1

Mark as read: Add to a list

My teacher told me if you take the Derivative of any function enough times you would get 0. Can you prove lim n->infinity d^(n)/dx^(n)=0 for any function, even trig functions?

460 upvotes • nickk515

Mark as read: Add to a list

If adding a proton to an element turns it into another element, Why can't there be unlimited amounts of elements?

460 upvotes • kittymowmowmow

Mark as read: Add to a list

Why aren't we seeing organic photovoltaics solar cells everywhere? What's the catch?

460 upvotes • chemical_me

Mark as read: Add to a list

[physics] If a bullet is shot straight up in the air, how long does it hang motionless before returning? Can this length of time be measured?

460 upvotes • fakakta77

Mark as read: Add to a list

What is actually happening when someone's voice "cracks"?

460 upvotes • Yobazeke

Mark as read: Add to a list

Why do you "hear" a thud when watching this gif with no sound?

459 upvotes • Avalon81204

Mark as read: Add to a list

Do cold sinks in survival shelters actually serve a purpose?

459 upvotes • chenliway

Mark as read: Add to a list

Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Does six minutes of sun exposure 10 times throughout the day provide the same tanning (skin damage) effect as one continuous hour?	460	cyberwretch
When you are scared or excited can your heart actually "skip a beat"?	460	Guerdonian
Is charge imaginary mass?	460	Feynstein1
My teacher told me if you take the Derivative of any function enough times you would get 0. Can you prove lim n->infinity d^(n)/dx^(n)=0 for any function, even trig functions?	460	nickk515
If adding a proton to an element turns it into another element, Why can't there be unlimited amounts of elements?	460	kittymowmowmow
Why aren't we seeing organic photovoltaics solar cells everywhere? What's the catch?	460	chemical_me
[physics] If a bullet is shot straight up in the air, how long does it hang motionless before returning? Can this length of time be measured?	460	fakakta77
What is actually happening when someone's voice "cracks"?	460	Yobazeke
Why do you "hear" a thud when watching this gif with no sound?	459	Avalon81204
Do cold sinks in survival shelters actually serve a purpose?	459	chenliway