SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Minnesota Department of Education. IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that school and district boundary data are up-to-date.
The spectral sensitivity is typically expressed as a QE Curve, in which the probability to detect a photon of a particular wavelength is expressed as a percentage.So for example if one in every 10 photons is detected this is expressed as a QE of 10%. The curve for a typical CCD is shown in the diagram on the below:
Electromagnetic sensitivity (ES) is a progressive disabling disease associated with exposure to electronic equipment. While researchers have been aware of this disease for more than two decades (Dodge, 1970), ES has received little attention from the scientific community. It has many names: electrical sensitivity, electrical-hypersensitivity, electrically injured, electrical intolerance, electric allergy and electromagnetic sensitivity. Several million people all over the world suffer from ES. Some people with severe ES are unable to work. Compounding the medical problems is the uncertainty as to whether the