A. Wavelength
The electromagnetic spectrum is determined by wavelength. Visible light is a section of the electromagnetic spectrum, and within it, light is further classified into colors by wavelength. Red waves are longer than violet waves.
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The SI base units have the dimensions of: length, mass and time.
<h3>What are SI base units?</h3>
The SI base units are the internationally accepted system of units of fundamental quantities.
These SI base units consist of system of units of measurement starting with seven base units, which are as follows:
- second (s): the unit of time
- metre (m): The unit of length kilogram (kg): the unit of mass
- ampere (A): the unit of electric current
- kelvin (K): the unit oftemperature
- mole (mol.): the unit of amount of substance
- candela (cd):the unit of luminous intensity
Learn more about SI base units
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Answer:
Modern communication has made our socio-economic life so much better and easier. It is easier now to communicate with someone far away on another continent and even do business and shop online without been physically present at the other end. One of the most important modern means of communication is the internet which has turned the world to a small global village.
Color spectrum, that rainbow of colors that appears when white light is refracted into a prism to separate all colors of visible light. Basically a rainbow.
