No! Red, green and blue are primary colours within additive colour models and can only be produced by a single wavelength of light.
Dictionary category: Question
Can the wavelength of an electromagnetic wave be measured?
Yes! The wavelengths of colours in the visible spectrum are measured in nanometres.
Can you always see a rainbow at midday?
Can you name five units of measurement for frequency?
Hertz. Kilohertz. Megahertz. Gigahertz. Terahertz.
Can you see an atmospheric rainbow at mid-day?
Do all light waves propagate through a vacuum in a straight line?
Yes! light waves propagate through a vacuum in a straight line at the speed of light.
Do all RGB colour wheels include secondary colours?
Yes! As more segments are added to an RGB colour wheel they all show secondary colours.
Do all RGB colour wheels include tertiary colours?
No! Not all RGB colour wheels show tertiary colours. So a wheel with 12 segments does but a wheel with 18 doesn’t.
Do all RGB colour wheels start with primary colours?
Yes! All RGB colour wheels start with the three primary colours: red green and blue.
Do artists paints produce dark brown when the primary colours red, yellow and blue are mixed together?
Yes! Red, yellow and blue paints produce a dark brown when mixed together because each colour subtracts from the wavelengths of light reflected towards an observer.
Do cyan, magenta and yellow printing inks produce dark brown when mixed together in equal amounts?
Yes! Cyan, magenta and yellow are the three primary colours in the CMY colour model. When mixed together they produce a dark brown or black because each colour subtracts from the wavelengths of light reflected towards an observer.
Do gamma rays have a shorter wavelength than visible light?
Yes! Gamma rays have the shortest wavelengths within the electromagnetic spectrum.
Do mixtures of RGB primary colours produce spectral colours?
No! The colours produced by mixing primary colours are not spectral colours. Spectral colours are produced by a single wavelength of light.
Do photons have wavelength and frequency?
Yes! Photons can be described in terms of their wavelength and frequency?
Do primary and secondary rainbows have different centre points?
No! Primary and secondary rainbows share the same centre points so the circumferences of both bows are aligned with one another.
Do radio waves or gamma rays transport more energy?
Gamma rays transport more energy than any other band of wavelengths within the electromagnetic spectrum.
Do rainbows produce a continuous spectrum of colours between red and violet?
Yes! In ideal conditions, atmospheric rainbows produce a continuous spectrum of colours inclusive of all wavelengths of the visible spectrum.
Do shorter waves have a higher frequencies?
Yes! Frequency and wavelength are inversely related. Within the visible spectrum, colours with shorter wavelengths such as violet have a higher frequency whilst red has a lower frequency.
Do the coloured arcs of a rainbow always appear at the same angle from the point of view of an observer.
Yes! The arcs of a rainbow always appear at the same angle from its centre point.