# Spin 1/2

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1. May 28, 2015

### Isaac0427

Hi,
I was looking at the wikipedia article for spin 1/2 http://en.wikipedia.org/wiki/Spin-½ and it stated that √(½(½+1))ħ=√3/2ħ. According to my math it is √¾ħ. Is this just a typo or am I missing something?

2. May 28, 2015

### ShayanJ

Be careful, what you wrote is $\sqrt{\frac 3 4 }\hbar$ and what the wiki page wrote is $\frac{\sqrt 3}{2} \hbar$. They're the same!

3. May 28, 2015

### Isaac0427

Ah I see. I went off initial simplification, not realizing that they are the same.

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