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I've tried googling, but the answers I did find were mathematically too complex for me, though from what I have read it seems it shouldn't be much more than "cos a" or "cos^2 a" for an angle of a < 45 degrees.

Thanks in advance,

gespex

- Thread starter gespex
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- #1

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I've tried googling, but the answers I did find were mathematically too complex for me, though from what I have read it seems it shouldn't be much more than "cos a" or "cos^2 a" for an angle of a < 45 degrees.

Thanks in advance,

gespex

- #2

DrChinese

Science Advisor

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For spin 1/2 particles, such as electrons: cos a

I've tried googling, but the answers I did find were mathematically too complex for me, though from what I have read it seems it shouldn't be much more than "cos a" or "cos^2 a" for an angle of a < 45 degrees.

Thanks in advance,

gespex

For spin 1 particles, such as photons: cos^2 a

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Thank you, once again! ;-)

- #4

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I have another question about this after all. Imagine two stern-gerlach devices in a row, where the particles with up-spin go through the second with an angle a relative to the first. What is the chance the particle has an up-spin at the second stern-gerlach device as well?

I expected it to be the same (cos a), but I tested it in an applet and it seems to be different after all...

Edit: Never mind, I found the answer. cos^2(a/2).

Thanks in advance

I expected it to be the same (cos a), but I tested it in an applet and it seems to be different after all...

Edit: Never mind, I found the answer. cos^2(a/2).

Thanks in advance

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