telecommunication- telephone

telecommunication- telephone - 3) Ray still gets refracted...

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The Telephone transmitter loudspeaker (Sound energy to electrical energy) (Electrical energy to sound energy)
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Printed circuit board of the telephone
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An Older Telephone
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Using an oscilloscope 1) Quiet sound, low frequency: 2) Quiet sound, high frequency: 3) Loud sound, low frequency: 4) Loud sound, high frequency:
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Telecommunication Optical Fibres The law of reflection. When a ray of light bounces off a mirror , the angle going in equals the angle coming out. The line at right angles to the mirror is called the normal.
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Optical Fibres When light is incident on a  glass surface, refraction or  bending of the light takes  place. The light comes out of the  glass. This however is dependent  on the angle i.
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Finding the Critical Angle… 1) Ray gets refracted 4) Ray gets internally  reflected
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Unformatted text preview: 3) Ray still gets refracted (just!) 2) Ray still gets refracted THE CRITICAL ANGLE O ptic a l Fib re s O ptic a l fib re s a re m a de o f thin fle xib le g la s s thre a ds . The y a re a b o ut the s ize o f a hum a n ha ir. The fib re s ha ve a pro te c tive c o a ting whic h ke e ps the lig ht ins ide the fib re . S a te llite s Inte ra c tive s um m a ry. S a te llite s whic h o rb it the e a rth e ve ry 24____ a re c a lle d ________ s a te llite s . The y a re a b o ve the _____ po int o n the _____ . S a te llite s us e ______ dis he s to _______ the m ic ro wa ve s ig na ls . The m ic ro wa ve s ig na ls tra ve l in _______ line s ....
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telecommunication- telephone - 3) Ray still gets refracted...

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