Tuesday/ the elusive blue laser pointer

The coolest color in laser pointers is blue right now – just out for commercial use reportedly after 8 years of research.  It uses a gallium nitride crystal to produce a 473 nanometer blue laser light which is sure to make all other laser pointer owners green with envy – those with green ones as well as the red ones which are so cheap now that I picked one up for ¥20 /US$3 in Shenzhen some time ago.

Our project manager has found a shop that sells blue laser pointers in Shanghai for ¥500 /US$80.   Should I get one?  (Should I get you one? Let me know by Friday).    I see the website thinkgeek sells them for US$500.

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