American Heritage® Dictionary of the English Language, Fourth Edition
- n. The chemistry of the effects of light on chemical systems.
Century Dictionary and Cyclopedia
- n. That branch of chemistry which treats of the chemical action of light.
- n. chemistry The study of photochemical reactions
GNU Webster's 1913
- n. (Chem.) The branch of chemistry which relates to the effect of light in producing chemical changes, as in photography.
- n. branch of chemistry that deals with the chemical action of light
“The goal of this “Expose” experiment is to understand the effects of zero gravity and ultraviolet and other cosmic radiation on PAHs, and it focuses especially on photochemistry, the changes that occur when different forms of light hit the compounds.”
“For how the energetic cycles of that power the cell emerged, that alone has only entertained many interesting possibilities, hot core and cooler oceans, reducing ocean/sea floor/land and more oxidizing atmosphere, molecules generated by incubation in space and subsequent infall to earth, reacting with terrestrial molecules, photochemistry (from a uv-rich sun), concentration gradients of a wide variety of sorts, reactions of molecules produced by energetic processes involving meteor impact/burnup.”
“As a National Science Foundation Graduate Research Fellow, her research focused on the composition and photochemistry of secondary organic aerosol, as well as biogenic emissions of atmospherically relevant trace gases.”
“Last time I checked photochemistry was a pretty powerful beast that drives much of current life.”
“In August-October of that year, NASA launched a total of 33 rockets with various experiments to measure the photochemistry and plasma of the atmosphere near the equator.”
“A three-dimensional modelling study of the influence of planetary wave dynamics on polar ozone photochemistry.”
“Specifically, she has conducted numerous investigations of photochemistry and of transport processes in the upper atmosphere (that is, the stratosphere and troposphere).”
“A diabatic circulation two-dimensional model with photochemistry: simulations of ozone and long-lived tracers with surface sources.”
“The University of Illinois at Urbana-Champaign three-dimensional stratospheretroposphere general circulation model with interactive ozone photochemistry: fifteen-year control run climatology.”
“Lindzen is known for his work in the dynamics of the middle atmosphere, atmospheric tides and ozone photochemistry.”
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