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2. Phycoerythrin - Wikipedia

   en.wikipedia.org/wiki/Phycoerythrin

   Phycoerythrin (PE) is a red protein-pigment complex from the light-harvesting phycobiliprotein family, present in cyanobacteria, [1] red algae [2] and cryptophytes, [3] accessory to the main chlorophyll pigments responsible for photosynthesis.The red pigment is due to the prosthetic group, phycoerythrobilin, which gives phycoerythrin its red color.

3. Photopea - Wikipedia

   en.wikipedia.org/wiki/Photopea

   Photopea (/ ˈ f oʊ t ə ˈ p iː / FOH-tə-PEE) is a web-based photo and graphics editor. It is used for image editing, making illustrations, web design or converting between different image formats. Photopea is advertising-supported software.

4. Photoelectrochemical cell - Wikipedia

   en.wikipedia.org/wiki/Photoelectrochemical_cell

   The standard photovoltaic effect, as operating in standard photovoltaic cells, involves the excitation of negative charge carriers (electrons) within a semiconductor medium, and it is negative charge carriers (free electrons) which are ultimately extracted to produce power.

5. Qualex - Wikipedia

   en.wikipedia.org/wiki/Qualex

   Qualex operated a large network of commercial and in-store labs throughout the United States and Canada. Qualex's business slowed from the overall decline in traditional film photography in favor of digital photography. Qualex once operated 53 photo processing laboratories; that number had shrunk to 22 by June 2004, and the company saw further ...

6. Photo-lab timer - Wikipedia

   en.wikipedia.org/wiki/Photo-lab_timer

   A photo-lab timer, photo interval timer, or darkroom timer is a timer used in photography for timing the process of projecting negatives to photosensitive paper with ...

7. RA-4 process - Wikipedia

   en.wikipedia.org/wiki/RA-4_process

   RA-4 is Kodak's proprietary name for the chemical process most commonly used to make color photographic prints. It is used for both minilab wet silver halide digital printers of the types most common today in photo labs and drug stores, and for prints made with older-type optical enlargers and manual processing.