The^Bob's photostream  

This shows the visible and nir (400-2500nm) transmission spectrum of a 1cm depth of linseed oil (top...

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Uploaded on Feb 26, 2012

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The photograph in the lower part of the image shows a 633nm laser beam entering from the right a 1 x 5...

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Uploaded on Feb 26, 2012

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The pair of images in the lower panel show a small (8mm wide) pale blue-green fluorite crystal being...

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Uploaded on Feb 18, 2012

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A cut blue-green fluorite from Afganistan - 14mm long, 4.82 carats - illuminated with a 20mW 404nm...

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Uploaded on Feb 17, 2012

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Transmission (lower) and fluorescence (upper - shifted by 100 flux units) under 404nm laser excitation...

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Uploaded on Feb 10, 2012

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An attempt to isolate the phycobilin fluorescence spectrum by subtracting a green (fig) leaf...

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Uploaded on Feb 10, 2012

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The air temperature was -15°C.

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Uploaded on Feb 5, 2012  |  Map

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The blue, green and red line spectra above show the fluorescence of extra-virgin olive oil excited by...

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Uploaded on Feb 3, 2012

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The spectrum plot above shows a wide wavelength coverage of the transmission (green lines) of a 1cm...

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Uploaded on Jan 31, 2012

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Dark green non-transparent apatite containing small (mm-sized) transparent hexagonal crystals that...

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Uploaded on Jan 24, 2012

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Wilhelm von Gloeden, Taormina

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Uploaded on Jan 22, 2012

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Uploaded on Jan 22, 2012

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Uploaded on Jan 22, 2012

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... in a dark room. The only time it is likely to be drunk.

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Uploaded on Jan 22, 2012

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I'm not sure that this particular cocktail would catch on. The red fluorescer is chlorophyll in olive...

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Uploaded on Jan 21, 2012

4 notes / 2 comments

The finished product. Still undrunk and with the ice melted.

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Uploaded on Jan 21, 2012

3 comments

A glass of (quite good) olive oil.

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Uploaded on Jan 21, 2012

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Uranium and lanthanide fluorescence in a wine glass illuminated by a 404nm violet laser - taken through...

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Uploaded on Jan 21, 2012

4 comments