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60 Cards in this Set

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 Which surface is easier to see, wet specular surface or dry diffuse surface? Dry diffuse surface because it's rough Ray of light travels from ________ medium to ________ medium bends toward the normal less dense; more dense Ray of light travels from ________ medium to ________ medium bends away from the normal more dense; less dense Incident ray, reflected ray and normal at the point of incidence all lie in same plane Law of Reflection Angle of reflection is equal to _______ Angle of incidence When angle of incidence in denser medium is greater than critical angle in that medium Total Internal Reflection Splitting of white light into its component colors (ROYGBIV) Dispersion Concave mirror rays __________ Converge Convex mirror rays __________ Diverge Focal length = ___________ 1/2 radius of curvature Smaller, upright, virtual is what type mirror Convex Inverted image is what type mirror Concave larger, upright, virtual mirror O < f image formed at infinity, larger, real, inverted mirror O = f inverted, larger, real mirror R > O > f same size, real, inverted mirror O = R smaller, inverted, real mirror O > R image formed at focal point, smaller, real, inverted mirror O = infinity virtual lense has _________ focal length negative real lense has _________ focal length positive Mirror has real image on what side? same can virutal images reflect on screen? No Virtual images are on what side for lenses? same Real images are on what side for lenses? opposite Lense/Mirror formula for calculating focal length 1/f = 1/O + 1/I If f > O+ ______ lense convex If f< -O _______ lense concave If f> O+ _______ mirror concave If f < -O _______ mirror convex what is the formula for strength of a lense? S = 1/f in meters How is strength of a lense measured? in diopters the eye relaxes to see _____ far away the eye contract to see _____ near How do you calculate accomodation of the eye? L2R - f/f x 100 Glaucoma is? excess fluid pressure ersolved through surgery to drain Cataracts is? lense opaque and dirty Spherical abbaration is? blurred focal point corrective lense forms image on _______ outside effective system forms image on________ retina Nearsighted means? eyeball to long, focal length too short Farsighted means? focal length too long, eyeball too short (hyperopia) What is presbyopia? weakening of the cilliary muscles--nearsighted How do you find the effective focal length? 1/f(eff) = 1/f(eye) + 1/f(corr) How do you find effective strength of eye? S(eff) = S(eye) + S(corr) What is electromagnetic spectrum? family of waves that have same speed in a vacuum. C = 3 x 10^8 m/s How do you find Atomic #? Number of e- or p+ How do you find Mass #? Atomic # + # neutrons Which wave is stronger, infrared or cosmic rays? Infrared Which wave is stronger, radiowaves or UV rays? radiowaves Coulombs force says what? What does this mean? CRF > SNF; nuclear stable When CRF > SNF what happens? nuclear instability; weak nuc. force responsible Alpha decay is? 4 over 2 Beta electron decay is? 0 over -1 Beta positron decay is? 0 over +1 Gamma decay is? 0 over 0 How do you find Qf? Qi/2^n How do you find T? T = n x half life How do you find n? log (Qi/Qf) / log 2 Half life involves? mass, particles and volume How do you find T(eff)? T(eff) = 1/T(eff) = 1/Tp + 1/Tb