Life is short and progress is slow.

quote by Gabriel Lippmann
Added by Lucian Velea
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I got quite good results from protein plates.

quote by Gabriel Lippmann
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This result is due to a phenomenon of interference which occurs within the sensitive layer.

quote by Gabriel Lippmann
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The problem of direct colour photography has been facing us since the turn of the last century.

quote by Gabriel Lippmann
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When the shot is afterwards subjected to white light, colour appears because of selective reflection.

quote by Gabriel Lippmann
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The series of photographic operations, developing, washing, final drying, takes about quarter of an hour.

quote by Gabriel Lippmann
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Most of these pictures, taken while travelling, were developed on the mantelpiece of a hotel room, which proves that the method is easy enough to carry out.

quote by Gabriel Lippmann
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The length of exposure (one minute in sunlight) is still too long for the portrait. It was fifteen minutes when I first began my work. Progress may continue.

quote by Gabriel Lippmann
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During exposure, interference takes place between the incident rays and those reflected by the mirror, with the formation of interference fringes half a wavelength distant from each other.

quote by Gabriel Lippmann
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The plate at each point only sends back to the eye the simple colour imprinted. The other colours are destroyed by interference. The eye thus perceives at each point the constituent colour of the image.

quote by Gabriel Lippmann
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