According to Business Wire, in 2003: Ten percent of Americans spend on average $300 per year to tan indoors. This equates to a total US market for tanning of over $9 billion per year, and does not include the $3 billion tanning products market. Enhancements in technology and consumer acceptance are fueling the industry's growth. A suntan is the result of injury to the epidermis, the top layer of your skin.
the most striking example of fluorescence occurs when the absorbed radiation is in the ultraviolet region of the spectrum and thus invisible to the human eye while the emitted light is in the visible region which gives the fluorescent substance a distinct color that can only be seen when exposed to uv light
Diamond Fluorescence. Fluorescence, the effect ultraviolet (UV) light has on a diamond, is an important consideration when selecting a diamond.When UV light strikes a diamond with fluorescent properties, the stone emits a glow that is usually blue, but can also be shades of green, yellow, white, pink, orange, and red.The sources of fluorescence, boron and nitrogen, are the same mineral properties that lend to Diamond Color.iamond Fluorescence. Fluorescence, the effect ultraviolet (UV) light has on a diamond, is an important consideration when selecting a diamond.