Seth Thomas from the United States patented the mechanical wind-up alarm clock in 1876.
美國人 Seth Thomas 在 1876 年獲得了機械發條鬧鐘的專利
This clock didn't only keep time, it also allowed a person to set a ' wake-up time '
and would ring a bell at the time the sleeper had set for awakening.
他 (Seth Thomas) 的鬧鐘不只可以記錄時間, 同時還可以設定"叫醒時間", 預先設定的叫醒時間到了還會發出鈴聲.
Battery-powered clocks were first used in the 1840s, with electric and quartz-powered
clocks coming into use in the early 1900s.
With the invention of battery and electric-powered clocks, there was no longer the need to wind a mainspring.
As a result, time-keeping became much more accurate.
· 1 decade ago