Definition of DIGITAL
1
: of or relating to the fingers or toes 'digital dexterity'
2
: done with a finger 'a digital rectal examination'
3
: of, relating to, or using calculation by numerical methods or by discrete units
4
: of, relating to, or being data in the form of especially binary digits 'digital images' 'a digital readout'; especially: of, relating to, or employing digital communications signals 'a digital broadcast' compare analog

5
: providing a readout in numerical digits 'a digital voltmeter'
6
: relating to an audio recording method in which sound waves are represented digitally (as on magnetic tape) so that in the recording wow and flutter are eliminated and background noise is reduced
7
: 'electronic digital devices'; also: characterized by electronic and especially computerized technology

Merriam-Webster
Definition of REFRACTION
1
: deflection from a straight path undergone by a light ray or energy wave in passing obliquely from one medium (as air) into another (as glass) in which its velocity is different

2
: the change in the apparent position of a celestial body due to bending of the light rays emanating from it as they pass through the atmosphere; also: the correction to be applied to the apparent position of a body because of this bending
3
: the action of distorting an image by viewing through a medium; also: an instance of this

Merriam-Webster




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