Page 23 - Final Science BB Prep2 Part one (2nd term) 2024-2025_Neat

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Science Prep.2

2-Analysis (Splitting) Of
White Light

It is the splitting of white light into seven colours called Spectrum Colours

spectrum colors: White light consists of mixture seven colors.
A triangular glass prism is used to analyze white light into its seven colors which are: Red ,

orange , yellow , green , blue , indigo , violet which different in:
-Wave length - Frequency -Angle of deviation

Red is closer to the
apex of the prism. It
has the least
deviation and the
lowest frequency.

Violet is closer to
the base of the
prism. It has the
maximum deviation
and the highest
frequency

3-Energy Of Light Waves

The German scientist Max Planck Proved that the energy of a light wave consists of quanta

of energy known as photons

The Energy of the photon is directly proportional
to the frequency of the light wave.

The Energy of the Photon = Planck's constant X frequency of the photon

The constant value is known as Planck's constant

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