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.
The type of geraniums harmful to cats are scented geraniums (Pelargonium spp., hardy in U.S. Department of Agriculture plant hardiness zones 10 and 11).Some varieties of this plant have strong fragrances, such as citrus, apple and peppermint, making them useful to the perfume industry.eraniums. The type of geraniums harmful to cats are scented geraniums (Pelargonium spp., hardy in U.S. Department of Agriculture plant hardiness zones 10 and 11). Some varieties of this plant have strong fragrances, such as citrus, apple and peppermint, making them useful to the perfume industry.