Photobiology is the study of how living organisms respond to light. It explores the effects of different wavelengths of light on biological processes, including photosynthesis in plants and the behavior of animals. This field combines aspects of biology, physics, and chemistry to understand how light influences life. Researchers in photobiology investigate various phenomena, such as how chlorophyll absorbs sunlight to produce energy in plants. They also study the role of light in regulating circadian rhythms in animals, which helps them adapt to day and night cycles. Understanding these interactions is crucial for applications in agriculture, medicine, and environmental science.