OTI and Walman ABO EXAM Prep questions and answers

Visible Spectrum of light 390 -750 Nanometers Long Ultraviolet (UV) Light 396-400 Nanometers Light is always bent towards the _______ of a Prism Base 1 Inch 25.4 millimeters I meter 39.37 inches Wavelength The distance between two corresponding parts of a wave two negative numbers when multiplied equal a ____ number positive Wave Theory Christian Huygens late 1600s -describes light as moving in waves, like waves of water corpuscular theory a theory made by Isaac Newton stating that light is made up of a stream of minute particles which originate from the light's source called photons index of refraction n= speed of light in air/speed of light in material 1.000 Index of refraction of air apex top point of prism base flat edge of prism 1 diopter of prism 1cm/1m a plus lens two prisms put base to base a minus lens two prisms placed apex to apex astigmatism a refractive error in which the rays of light do not come to a single point of focus