Thursday, March 31, 2011

Bi-centennial of Robert Bunsen's Birth

Reminded by Google's search page, Today is the 200th birthday of Robert Bunsen.  Known to high school students for his invention of the eponymous gas burner,  Bunsen did a lot more.  His burner invention was a means to an end.  To study the emission spectra of heated elements, one needs a source of clean and transparent heat -  either a hot, clean flame (no soot , just hot gas),  a source of hot inert gas heated by other means, or a source of directed light (e.g. UV) that energizes the sample without damaging it.  The simplest method is to use a flame containing only hot water and CO2. 
Google's doodle for today looks like this

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Tenth Anniversary of Surgery

It's been ten years since cancer surgery.  I have new camera. :)