Optics Science Olympiad Latest Update
Graded A+
The law of reflection states that the incident ray, the reflected ray, and the normal to the
surface of the mirror all lie in the same plane. Furthermore, the angle of reflection is equal to the
angle of incidence .
specular reflection is d...
Optics Science Olympiad Latest Update Graded A+ The law of reflection states ✔✔that the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane. Furthermore, the angle of reflection is equal to the angle of incidence . specular reflection ✔✔is defin ed as light reflected from a smooth surface at a definite angle. diffuse reflection ✔✔which is produced by rough surfaces that tend to reflect light in all directions Refraction ✔✔the fact or phenomenon of light, radio waves, etc., being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density. Change in direction of propagation of any wave as a result of its traveling at different speeds at different points along the wave front. Measurement of the focusing characteristics of an eye or eyes. Refractive index or index of refraction ✔✔of a material is a dimensionless number that describes how light propagat es through that medium. It is defined as n = c v , { \displaystyle n={ \frac {c}{v}},} where c is the speed of light in vacuum and v is the phase velocity of light in the medium. Snell's Law ✔✔a formula used to describe the relationship between the angles o f incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air. Critical angle ✔✔the angle of incidence for which angle of refraction is 90 °. The angle of incidence is measured with respect to the normal at the refractive boundary (see diagram illustrating Snell's law). Consider a light ray passing from glass into air. Prisms ✔✔are solid glass optics that are ground and polished into geometrical and opticall y significant shapes. The angle, position, and number of surfaces help define the type and function. Dispersion ✔✔dependent upon the geometry of the prism and its index dispersion curve, based on the wavelength and index of refraction of the prism substra te. The angle of minimum deviation dictates the smallest angle between the incident ray and the transmitted rays (Figure 8). The green wavelength of light is deviated more than red, and blue more than both red and green; red is commonly defined as 656.3nm, green as 587.6nm, and blue as 486.1nm.
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