Practice question · Match the pairs
Match each name to the contribution.
- Hermann Vogel, 1873
- Gurney and Mott, 1938
- Wratten and Wainwright, 1906
- Richard Leach Maddox, 1871
- The two-stage mechanism of latent-image formation
- Dye sensitisation, extending the emulsion into the green
- The first commercially available panchromatic plates
- The gelatin dry plate that freed photographers from coating on the spot
Hints
- Two contributions are chemical, one is physical and one is a manufacturing landmark.
- The earliest of the four is about the medium the crystals sit in.
Show the answer
- Hermann Vogel, 1873 → Dye sensitisation, extending the emulsion into the green
- Gurney and Mott, 1938 → The two-stage mechanism of latent-image formation
- Wratten and Wainwright, 1906 → The first commercially available panchromatic plates
- Richard Leach Maddox, 1871 → The gelatin dry plate that freed photographers from coating on the spot
Why
Maddox is first in time and last in glamour, and his contribution is arguably the largest: suspending the halide in gelatin made emulsions that could be manufactured, stored and used dry. Every emulsion in this unit is a descendant of that single change of medium.
Practise The Latent Image
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