Wafeek,Anthony,Augustine

INTRODUCTION

A quartz clock is a a clock  that that uses an an electronic oscillator that oscillator  that is regulated by a a quartz  crystal crystal to keep time. This crystal oscillator creates a signal with very precise frequency, so that quartz clocks are at least an order of magnitude more accurate than mechanical clocks. The first quartz clock was built in 1927 by Warren Marrison and J.W. Horton at Bell Telephone Laboratories.

EXPLANATION

Quartz is a chemical compound called silicon dioxide.  Many materials can be formed into plates that will resonate but quartz is the most preferred material for time keeping because of two special qualities that it has: its piezoelectric quality and its stability in every time place and condition.

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