 Early colour photograph by Lippmann Named after Gabriel Lippmann, physicist. The Lippmann plate was an early form of colour photography developed in 1891. Image File history File links Lippmann_photo_view. ...
Image File history File links Lippmann_photo_view. ...
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Color photography was explored throughout the 1800s. ...
1891 (MDCCCXCI) was a common year starting on Thursday (see link for calendar). ...
A glass plate is coated with transparent and grainless silver emulsion. It is the uncoated side which is exposed to the light with the emulsion in contact with a reflecting surface such as mercury. The incident light is reflected back on itself causing interference. This establishes standing waves in the emulsion at half the wavelength of the incident light which react with the photosensitive emulsion. The plate is then processed so that the recording becomes changes in the index of refraction of the gelatin. These changes of index of refraction reflect the light by a process called Bragg Diffraction. A. Two immisicble liquids, not emulsified; B. An emulsion of Phase B dispersed in Phase A; C. The unstable emulsion progressively separates; D. The surfactant (purple outline) positions itself on the interfaces between Phase A and Phase B, stabilizing the emulsion An emulsion is a mixture of two immiscible (unblendable...
General Name, Symbol, Number mercury, Hg, 80 Chemical series transition metals Group, Period, Block 12, 6, d Appearance silvery white Atomic mass 200. ...
A standing wave, also known as a stationary wave, is a wave that remains in a constant position. ...
The Bragg formulation of X-ray diffraction (also referred to as Bragg diffraction) was first proposed by William Lawrence Bragg and William Henry Bragg in 1913 in response to their discovery that crystalline solids produced surprising patterns of reflected X-rays (in contrast to that of, say, a liquid). ...
The color image can only be viewed in the specular reflection from the plate, making the field of view limited. Diagram of specular reflection Specular reflection is the perfect, mirror-like reflection of light from a surface, in which light from a single incoming direction is reflected onto a single outgoing direction. ...
The field of view is the part of the observable world that is seen at any given moment. ...
However the technique was very insensitive with the emulsions of the time and it never came into general use. RGB photography won because it was adequate for most purposes.
- Lippmann Wiki for experimenters
- Forum for the Lippmann Process
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