What is Representation of Light Vibrations? - QS Study
QS Study

In an unpolarized light, the vibrations in all directions may be supposed to be made up of two mutually perpendicular vibrations. These are represented by double arrows and dots (Figure).

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Fig: Light vibrations

The vibrations in the plane of the paper are represented by double arrows, while the vibrations perpendicular to the plane of the paper are represented by dots.