Photomicrography of human tears
On the artist's web site, he says:
WORKS – Lacrimosa by Sasha R. Gregor
Sasha R. Gregor is a visual artist based in Barcelona who, for the past 20 years, has been using photography to investigate the act of …
artthescience.com
On the artist's web site, he says:
The photomicrographs in Lacrimosa were taken using a Nomarski interference photomicroscope. All the images were captured with a magnification factor of 2000 and under the same lighting (diascopic halogen light), and none underwent any color-altering digital treatment. The various hues of each tear result only from optical coloring produced by the interference contrast technique, and they are a function of the composition and topography of the salt precipitate in each tear.
Recent biochemical studies of tears have shown that the concentration of proteins also varies in accordance with whether the tear was caused by an emotion or by an irritating agent (a foreign particle, the wind, a physical impact or contact with a chemical substance). According to the clinical studies published by Johnson D., Hoffman and McGee, the concentration of proteins is 25% greater in tears of emotion than in those that are not psychological in origin.
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