According to our research of Texas and other state lists there were 170 registered sex offenders living in Katy, Texas as of April 20, 2017. The ratio of number of residents in Katy to the number of sex offenders is 86 to 1. Median real estate property taxes paid for housing units with mortgages in 2015: $3,678 (2.1%)
solar spectrum. The distribution of electromagnetic radiation emitted by the sun. Although the solar spectrum essentially covers the entire electromagnetic spectrum, most of the energy is concentrated in an interval whose wavelengths span from approximately 300 nm to 3000 nm.
White light is dispersed by a prism into the colors of the visible spectrum. The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 390 to 700 nm.