Mathematics and Society - OS X Lion Server

MIRROR, MIPPOQON TI-I[; WHLL(Materials Needed:4 straight pins, mirror, cardboard of softwood to fit under paper, protractor, blockof wood for support1)ITape the mirrorto the wood andmake an arrangementlike indrawing. Besure c is per­BLOCK. or WOOD rOR SUPPORT-.>: : ";." -.", ..;.:.-. ", .:. -":"'::.,.; ", ~"': •._"," _.. :...·.'·.c': :':':.::,: . ~'.:.' '. ".}',: .',.,":"::: .....:.;..::A PIECE OFCARD80ARD OR50nWOOD UtJDIOR­'. NEAtH THE PAPERPROtECTS TI-l£ DESK.' TOP AtJD MAK.E:-:' IT:' EASlER TO PUSH:: \1-> THE PINS.pendicular to a.IIDraw in line segment bIIIPlace two pins, #1 andto represent an incoming#2, upright along lineray of light.Any anglesegment b.They shouldwill work.be about 5 cm apart.2) Stick pins 113 and #4 in the paper so that when you lookinto the mirror these pins will lie in a straight linewith the reflection of pin III and 112. Moving your headback and. forth will help you find this position.(3) 0. -j/-..:":- _bRemove the mirror and draw the line passing through thetwo new pin holes. Angle i is called the angle ofincidence and angle r is the reflected angle. Measureboth of them. -m. L i = 0 m L 'r = 04) Repeat the experiment with different angles, for the first use a larger incidentangle than the previous trial. For the second, use a smaller angle.Angle of incidenceAngle of reflectionTrial 111Trial 112Trial 1135) You be the scientist. Using the data above make a statement relating the measuresof the angle of incidence and the reflected angle.358(