Spectrum HoloByte ended in 1999.
Spectrum HoloByte was founded in 1983 by Phil Adam and Lyman Orton.
Gamma rays are at the end of the spectrum
Spectrum - band - ended in 1973.
A spectrum goes from red at the low frequency end to violet at the high frequency end.
Red is at the low frequency end of the visible spectrum.
The warm end of the visible spectrum is red, while the cool end is violet.
The longest visible wavelengths are thoseat the red end of the spectrum (rainbow).
The colour at the opposite end of the colour spectrum is violet.
It's called infrared light outside one end of the spectrum,and ultraviolet light outside the other end.,
The ultraviolet spectrum is 'beyond' (ultra) the violet part of the visible spectrum, that is, beyond the short end of the wavelength range. The infrared spectrum is 'within' (infra) the long end of the wavelength range. The two terms have nothing to do with color, which defines the visible spectrum between violet and red.
Red (low end) & Violet (high end).
A spectrum is usually also a range. Like the speed spectrum for a car in regular use would be from a few MPH to maybe 90 MPH. The extremity of that spectrum would be at either end.