For 10 points, name this type of radiation, emitted by blacklights, that includes light with a shorter wavelength than visible light but longer than that of x-rays.
Most Cherenkov radiation occurs in this spectrum, and the Rayleigh-Jeans law breaks down in this radiation's spectrum, causing its namesake "catastrophe." One kind of spectroscopy utilizes light in the visible range and this range, which encompasses wavelengths between 10 and 400 nanometers. For 10 points, name this type of radiation, emitted by blacklights, that includes light with a shorter wavelength than visible light but longer than that of x-rays.
Most Cherenkov radiation occurs in this spectrum, and the Rayleigh-Jeans law breaks down in this radiation's spectrum, causing its namesake "catastrophe.
{ultraviolet} light [or {ultraviolet} radiation; or {ultraviolet} spectrum; or {UV light/spectrum/radiation}]