/u/CwenchinglyMcquaffen's posts in /r/askscience

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Why is it if we stare at a bright light for too long we can still see a bright outline of said light when we close our eyes?

5825 upvotes

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If I was to give a mouse a piece of cheese every day, how many days would it take for the mouse to become dependent on my cheese donations? To the point where it no longer scavenges for itself

1 upvotes

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Will a 40 Watt UV blacklight and a 20W bulb effect a blacklight poster differently? Or does Wattage not matter in this case?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why is it if we stare at a bright light for too long we can still see a bright outline of said light when we close our eyes?	5825
If I was to give a mouse a piece of cheese every day, how many days would it take for the mouse to become dependent on my cheese donations? To the point where it no longer scavenges for itself	1
Will a 40 Watt UV blacklight and a 20W bulb effect a blacklight poster differently? Or does Wattage not matter in this case?	1