In the end, Roosevelt felt he owed it to the country to serve the best way he could, and the best thing for the country then was a vigorous, seasoned leader. The current European war and its implications of dark times ahead convinced many Americans that Roosevelt should stay on.
1 Visible blue light kills acne bacteria. 2  Three blue light treatments kill about 99.99% of acne bacteria that the light reaches, although some acne bacteria live deep in pores. 3  Red light therapy can help shrink the sebaceous glands that produce the oil that clogs pores.cne bacteria are killed by visible blue light, that is, light you can see, not UV light, of wavelengths between 407 and 420 nanometers. The bacteria have pigments in their protective cell membranes that resonate at those frequencies. These pigments break down the membrane, eventually killing the bacterium.
Red light therapy is a skin care treatment being offered as an alternative to physician-administered laser therapy. Most studies involving red light therapy revolve around the treatment of acne, rosacea, and of its ability to get rid of wrinkles.