Red always appears on the outside edge of a primary rainbow.
Dictionary category: Question
What is the difference between brightness and colour brightness?
Brightness usually refers to the level light whilst colour brightness refers to the level of saturation of a colour.
What is the difference between the CMY colour model and CMYK?
The CMY (cyan, magenta and yellow) colour model is used for digital printers. K = black and refers to an additional ink cartridge used to print darker tones and shadows.
What is the difference between the CMY colour model and the four-colour CMYK inks used by printers?
A printer that uses CMYK inks adds black (K) ink to cyan, magenta and yellow to produce deeper blacks.
What is the difference between the RGB and HSB colour models?
The RGB colour model uses colour values that identify how much red, green and blue light is present in a colour. The HSB colour model uses colour values to identify the hue and the level of saturation and brightness.
What is the difference between the spectral colour model and the RGB colour model?
The spectral colour model deals with wavelengths of light and corresponding colours that make up the visible spectrum. The RGB colour model is an additive colour model in which red, green and blue lights are combined to produce other colours.
What is the largest unit used to measure wavelength?
The largest unit used to measure the wavelength of electromagnetic waves is the kilometre!
What is the name for light containing all the wavelengths of the visible spectrum at equal intensity?
White light contains all the wavelengths of the visible spectrum at equal intensity.
What is the name of the invisible band of wavelengths next to red?
The invisible band of wavelengths next to red is infrared.
What is the name of the star at the centre of our solar system?
The star at the centre of our solar system is called the Sun.
What is the other term used for the law of refraction?
Snell’s law is the other term used for the law of refraction.
What is the range of wavelengths (in nanometres) that makes up the visible spectrum?
Wavelengths visible to the eye are in a band between approximately 390 to 700 nanometres.
What is the relationship between wavelength and colour?
The relationship between wavelength and colour is that wavelength is a property of electromagnetic waves whilst human observers see different wavelengths as different colours.
What is the RGB colour model?
RGB is a colour model used to produce a full palette of colours by mixing red, green and blue light sources in different proportions.
What is the RYB colour model?
The RYB colour model is a subtractive colour model widely used for mixing artists’ paints. It is well suited to understanding the colours produced by powder, acrylic or oil paints.
What is the speed of light in a vacuum rounded up to the next thousand?
300,000 kilometres per second.
What is the term for the lowest point in the oscillation of a wave?
The lowest point in the oscillation of a wave is called the trough.
What is the trichromatic colour model?
The trichromatic colour model is a theory of colour that establishes terms, rules and methods to enable human colour vision to be dealt with in both systematic and practical ways.
What is the unit of measurement for wavelengths of visible light?
The unit of measurement for wavelengths of visible light is the nanometre (nm).
What is the visible spectrum?
The visible spectrum is the small part of the electromagnetic spectrum our eyes are tuned to.