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Optics

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Optics

Terrestrial Telescope

A refracting telescope incorporating an additional erecting lens system between objective and eyepiece to yield an upright image for ground…

M = f_obj / f_eye, Tube Length L = f_obj + 4 f_erect + f_eye Dimensionless (×) Optics

Thin Film Interference

The interference phenomenon occurring when light waves reflected from the top and bottom boundaries of a thin transparent film superimpose.

2 n t cos θ = m λ (Constructive with phase shift) m Optics

Total Internal Reflection

The complete reflection of a light ray inside an optically denser medium when striking the boundary with a rarer medium at an angle…

sin θ_c = n2 / n1 (where n1 > n2) Degrees (°) Optics

Tyndall Effect

The scattering of a light beam by colloidal particles or tiny suspended matter in a fine suspension or transparent medium.

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