Gabriel Lippmann Quotes

12 quotes in 206 categories

• [On the Gaussian curve, remarked to Poincaré:] Experimentalists think that it is a mathematical theorem while the mathematicians believe it to be an experimental fact.
• When the shot is afterwards subjected to white light, colour appears because of selective reflection.
• This result is due to a phenomenon of interference which occurs within the sensitive layer.
• The series of photographic operations, developing, washing, final drying, takes about quarter of an hour.
• The problem of direct colour photography has been facing us since the turn of the last century.
• 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…
• 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.…
• 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…
• Life is short and progress is slow.
• In the case of composite colour, an infinity of systems must be obtained for maxima infinitely slight and with an infinity of interval values separating…
• I got quite good results from protein plates.
• 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…

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