Radiation is the emission (sending out) of energy from any source. There are many types of radiation. Ultraviolet (UV) radiation is a form of electromagnetic radiation. The main source of UV radiation (rays) is the sun, although it can also come from man-made sources such as tanning beds and welding torches.Radiation exists across a spectrum from very high-energy (high-frequency) radiation â like x-rays and gamma rays â to very low-energy (low-frequency) radiation â like radio waves.he main source of UV radiation (rays) is the sun, although it can also come from man-made sources such as tanning beds and welding torches. Radiation exists across a spectrum from very high-energy (high-frequency) radiation â like x-rays and gamma rays â to very low-energy (low-frequency) radiation â like radio waves.
By Heidi, White is a simple, clean and crisp color with many different varieties: off-white, eggshell, bright white, ivory, cream, ecruâ¦wait, whatâs ecru? Ecru is the term often used by fine stationery printers to describe ivory or cream colored paper.
The original version of the ACU uniform used a pixelated digital pattern known as the Universal Camouflage Pattern (UCP). UCP is similar to MARPAT, but uses more neutral, less saturated colors. The neutral colors, primarily foliage green and sand yellow, are designed to be work best in desert, woodland, and urban combat situations. The ACU in UCP was used by the army in all environments except for areas with snow, as the UCP pattern works poorly against white despite the heavy use of grey. An all-white BDU and the ECWCS are used instead for winterized warfare.