Download Cabling. Part 2, Fiber-optic cabling and components by Bill Woodward PDF

By Bill Woodward

ISBN-10: 111880726X

ISBN-13: 9781118807262

ISBN-10: 111884825X

ISBN-13: 9781118848258

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When viewed from above, the stick appears to bend because light travels more slowly through the water than through the air. Snell’s formula, which was published 70 years after his death, stated that every transparent substance had a particular index of refraction, and that the amount that the light would bend was based on the relative refractive indices of the two materials through which the light was passing. 33. The next breakthrough came from Jean-Daniel Colladon, a Swiss physicist, and Jacques Babinet, a French physicist.

Snell’s formula, which was published 70 years after his death, stated that every transparent substance had a particular index of refraction, and that the amount that the light would bend was based on the relative refractive indices of the two materials through which the light was passing. 33. The next breakthrough came from Jean-Daniel Colladon, a Swiss physicist, and Jacques Babinet, a French physicist. In 1840, Colladon and Babinet demonstrated that bright light could be guided through jets of water through the principle of total internal reflection.

Each voltage in the sequence is either high or low, and voltages that do not match either the high or the low level do not change the meaning of the digital sequence. The difference between the two is like the difference between a tape recording of a musical performance and a CD of the same performance. The analog recording may carry the same detail, but it would also contain a certain amount of hiss caused by electrical noise. The CD would be free of hiss, because the stray voltages do not register as either high or low signals.

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Cabling. Part 2, Fiber-optic cabling and components by Bill Woodward


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