Which type of light penetrates lakes to the greatest depth?

Blue light penetrates lakes to the greatest depth due to its shorter wavelength and higher energy compared to other colors in the visible spectrum. As sunlight enters the water, different wavelengths are absorbed and scattered by the water and suspended particles. Red light, with its longer wavelength, is absorbed more quickly by the water, typically within the first few meters. Green light has a slightly longer wavelength than blue light, which allows for some penetration but still not as deep as blue light. Yellow light, similar to red, is also absorbed swiftly and does not reach significant depths. In contrast, blue light can effectively penetrate deeper into the water, often reaching the photic zone where photosynthesis can occur, making it critical for aquatic life that depends on this light for energy.