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Development of modern clocks.

Clock technology has made dramatic progress from the 19th century to the 20th century. The invention of a compound metal called Inver and Elinvar. Riefler standard clock. Free pendulum standard clock. Incabloc. Magnetic escapement. And Quartz. It boasts an great precision and has become a replacement. After that, the National Bureau of Standards of the United States made atomic clocks in 1946. It has absolute accuracy, it became the reference clock.
Electricity was taken into the clock by Bain in 1840. This became a revolution in clock technology, and this clock has become popular and began to violate the area of mechanical clocks.


19世紀から20世紀にかけて、時計技術は飛躍的な進歩を遂げた。インバーやエリンバーの発明。リーフラ標準時計。自由振子式標準時計。インカブロック。磁気脱進機。そして水晶時計。これは精度の卓絶さを誇り、取って代わる存在となった。その後、1946年にアメリカ国立標準局が原子時計を作り、これは絶対精度を持ち、基準時計となった。
また、1840年にべインにより時計に電気が取り入れられた。これは革命となり、流行し、機械式時計の領域を侵し始めた。

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