Gabriel Lippmann

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. ↗

— Gabriel Lippmann

#distant #during #each #exposure #formation

I got quite good results from protein plates. ↗

— Gabriel Lippmann

#got #i #plates #protein #quite

Life is short and progress is slow. ↗

— Gabriel Lippmann

#life is short #progress #short #slow

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. ↗

— Gabriel Lippmann

#developed #easy #enough #hotel #hotel room

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. ↗

— Gabriel Lippmann

#continue #exposure #fifteen #fifteen minutes #first

The problem of direct colour photography has been facing us since the turn of the last century. ↗

— Gabriel Lippmann

#century #colour #direct #facing #last

The series of photographic operations, developing, washing, final drying, takes about quarter of an hour. ↗

— Gabriel Lippmann

#developing #drying #final #hour #operations

This result is due to a phenomenon of interference which occurs within the sensitive layer. ↗

— Gabriel Lippmann

#interference #layer #occurs #phenomenon #result

When the shot is afterwards subjected to white light, colour appears because of selective reflection. ↗

— Gabriel Lippmann

#appears #because #colour #light #reflection