Optics
4 terms
Terrestrial Telescope
Optics
Dimensionless (×)
A refracting telescope incorporating an additional erecting lens system between objective and eyepiece to yield an upright image for ground observation.
M = f_obj / f_eye, Tube Length L = f_obj + 4 f_erect + f_eye
Thin Film Interference
Optics
m
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)
Total Internal Reflection
Optics
Degrees (°)
The complete reflection of a light ray inside an optically denser medium when striking the boundary with a rarer medium at an angle exceeding the critical angle.
sin θ_c = n2 / n1 (where n1 > n2)
Tyndall Effect
Optics
N/A
The scattering of a light beam by colloidal particles or tiny suspended matter in a fine suspension or transparent medium.
N/A