Question

The reason behind the spectacular brilliance of diamonds and twinkling of stars is

Answer 1

Answer:

Diamonds get their brilliance from three things-reflection, refraction and dispersion. ... Only a portion of the light hitting a diamond is reflected; the rest travels through it. As the light moves through the diamond, it is scattered and fractured, creating the sparkle that diamonds are known for.

Answer 2

Answer:

The reason behind the spectacular brilliance of diamonds and the twinkling of stars is the total internal reflection.

Explanation:

Diamond and stars show the spectacular brilliance due to:-

• Since the critical angle for diamonds and stars is so small, light entering them is likely to cause total internal reflection.
• When a ray of light moves from a denser to a rarer medium, total internal reflection occurs at the interface of two transparent mediums.
• The critical angle is the angle of incidence in the denser media that corresponds to a 90° angle of refraction in the rarer medium.
• When a ray of light is incident at the interface of two mediums at an angle of incidence greater than the critical angle for the pair of media, total internal reflection (TIR) occurs.

Hence, the reason behind the spectacular brilliance of diamonds and the twinkling of stars is the total internal reflection.

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