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

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When a photon hits a mirror and goes from v=c to v=-c is there a moment when v=0? Does the mass of the photon decrease during this time?

13 upvotes

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How did scientists first determine what was a chemical element (irreducible) and how did they determine different forms of an element were in fact the same element?

6 upvotes

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Why are there rain forests in the southern hemisphere but no the northern?

2 upvotes

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Why isn't humidity the same for the same temperature and pressure?

2 upvotes

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How is it possible to have a negative temperature?

1 upvotes

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How is it possible to have a negative temperature?

1 upvotes

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Paint

1 upvotes

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How do Trees move?

1 upvotes

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What changes can we expect in the global economy when Bitcoin replaces all other currencies in the near future?

1 upvotes

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How did scientists determine what was in fact a base level element as opposed to a substance composed of multiple elements?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
When a photon hits a mirror and goes from v=c to v=-c is there a moment when v=0? Does the mass of the photon decrease during this time?	13
How did scientists first determine what was a chemical element (irreducible) and how did they determine different forms of an element were in fact the same element?	6
Why are there rain forests in the southern hemisphere but no the northern?	2
Why isn't humidity the same for the same temperature and pressure?	2
How is it possible to have a negative temperature?	1
How is it possible to have a negative temperature?	1
Paint	1
How do Trees move?	1
What changes can we expect in the global economy when Bitcoin replaces all other currencies in the near future?	1
How did scientists determine what was in fact a base level element as opposed to a substance composed of multiple elements?	1