The absorbed energy is converted to heat energy. The scenario you mention with the LED is very close to the blackbody problem known as the ultraviolet catastrophe.. There is a Wikipedia article about it here. What happens in the situation you described is that the light proof box gets hotter.
Diagnosing rust on geraniums can be a challenge for growers. Rust begins with yellow spots on the underside of the leaves and can rapidly progress with brown fungal spores called pustules in the center of each spot. The pustules are raised up off the leaf surface and feel rough to the touch.
Iâll have to find one of these plants! The Geranium as it is commonly known, is actually of the genus Pelargonium. Geranium is the correct botanical name of the separate genus that contains the related Cranesbills.Both genera are in the Family Geraniaceae.âll have to find one of these plants! The Geranium as it is commonly known, is actually of the genus Pelargonium. Geranium is the correct botanical name of the separate genus that contains the related Cranesbills.