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.
What is the range of frequencies on the visible light spectrum. This visible light region consists of a spectrum of wavelengths that range from approximately 700 nanometers (abbreviated nm) to approximately 400 nm. Expressed in more familiar units, the range of wavelengths extends from 7 x 10-7 meter to 4 x 10-7 meter. This narrow band of visible light is affectionately known as ROYGBIV.