Refractive patterns

Refractive patterns

best on black

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Uploaded on Mar 10, 2012

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Cut Zoisite (Tanzanite) gem, fluorescence & transmission

Cut Zoisite (Tanzanite) gem, fluorescence & transmission

The gem, 5mm long, is photographed through a light yellow filter that removes most - but not all - of...

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Uploaded on Mar 5, 2012

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Linseed oil transmission and fluorescence

Linseed oil transmission and fluorescence

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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Chlorophyll fluorescence in olive oil

Chlorophyll fluorescence in olive oil

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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Fluorescence spectrum and dispersed images of a green fluorite crystal

Fluorescence spectrum and dispersed images of a green fluorite crystal

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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Fluorescence of cut blue-green fluorite

Fluorescence of cut blue-green fluorite

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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Three old, dry seaweeds

Three old, dry seaweeds

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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Phycoerythrin fluorescence

Phycoerythrin fluorescence

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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A February morning at Kochelsee

A February morning at Kochelsee

The air temperature was -15°C.

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Uploaded on Feb 5, 2012  |  Map

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Olive oil fluorescence — 3 lasers

Olive oil fluorescence — 3 lasers

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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Olive oil spectra

Olive oil spectra

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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On green apatite

On green apatite

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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Junge Frau im Profil, ca. 1900

Junge Frau im Profil, ca. 1900

Wilhelm von Gloeden, Taormina

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Uploaded on Jan 22, 2012

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Pinakothek der Moderne

Pinakothek der Moderne

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Uploaded on Jan 22, 2012

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Pinakothek der Moderne entrance

Pinakothek der Moderne entrance

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Uploaded on Jan 22, 2012

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A glass of olive oil

A glass of olive oil

... 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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Happy-hour cocktail fluorescence spectrum

Happy-hour cocktail fluorescence spectrum

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

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Happy-hour_cocktail_2

Happy-hour_cocktail_2

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

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Uploaded on Jan 21, 2012

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