Best demo | Understanding refraction & Total internal reflection in prism with laser | STD 8-12

In physics, refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction.
Total internal reflection (TIR) is the optical phenomenon in which waves arriving at the interface (boundary) from one medium to another (e.g., from water to air) are not refracted into the second ("external") medium, but completely reflected back into the first ("internal") medium. It occurs when the second medium has a higher wave speed (lower refractive index) than the first, and the waves are incident at a sufficiently oblique angle on the interface. For example, the water-to-air surface in a typical fish tank, when viewed obliquely from below, reflects the underwater scene like a mirror with no loss of brightness

[@tanayjasani6603]

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[@MakeMeScientific]

Thanks dear Tanay

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[@playtube001]

Thank you very much sir for this experiment ❤

[@CivilEngineeringForum]

Intresting

[@CrazyBoy-tl3hv]

Thank you sir

[@nuzhatparveen2172]

Why is the colour of the refracted ray red while that of the incident ray is green?

[@MakeMeScientific]

That's due to scattering otherwise the colour remains the same

[@goranmalmsten5306]

What kind of scattering? It might as well be flourescence in glass of bad quality.

[@MakeMeScientific]

Yes true

[@Uday.raj.official]

What is red light

[@MakeMeScientific]

That's due to the scattering of light