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300
sundial clock
first clock was a sun dile invented in the early 300's invented by Babylonians. They used it by using the shawdow to cast a time. this was useful for only a little bit because they could not tell time at night. -
Period: 300 to
Clock Timespan
clocks spantime of life -
500
waterdial
the first water dial clock invented in the early 500's invented by Archimedes and used by the Eygptions but they could not invent it because there was no water in the desert. -
Apr 30, 700
hourglass
The hourglass was made inbetween the 500's and the 700's. It was invented by a man that said we can not make a waterdial because there is no water were we live ( Egypt ). So he invented a glass bottle that came to an narrow passage in the middle which would make it hard for the sand to fall to the bottom and when it ran out u flipped it over. -
Nov 16, 1400
First Mechanical clock
First Mechanical clock invented in the 1400's -
Jan 1, 1577
Minute Hand
Jost Burgi invented the minute hand. Burgi's invention was part of a clock made for Tycho Brahe, an astronomer who needed an accurate clock for his stargazing.
p.s i did not find the exact date. -
Galileo Galilei
Galileo helped with the invention of the clock , becasue he recoginized that the ferquency of pendulum swing depends on the length of Mechanical Clocks -
Pendulum Clock
The pendulum clock was invented in the 1650's by a man named Christian Huygens. The clock would sway back and forth with a heavy weight on it and would never lose motion. -
telegraph
First telegraph invented in the early 1800's used over sea's. -
Radio time Signal
First radio time signal invented in the 1900's. -
Quartz Clock
A quartz clock is a clock that uses an electronic oscillator that is regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency. Was invented by Warren Marrison and J.W. Horton. -
First automatic clock
The first automatic clock was invented in the 1949's to the 1950's -
Time
By 1998, everyone had or wanted a watch, becasue they became so popular. Around 500,000 watches are sold every day. -
Atomic clock
An atomic clock is a clock device that uses an electronic transition frequency in the microwave, optical, or ultraviolet region of the electromagnetic spectrum of atoms as a frequency standard for its timekeeping element. Atomic clocks are the most accurate time and frequency standards known, and are used as primary standards for international time distribution services, to control the wave frequency of television broadcasts, and in global navigation satellite systems such as GPS
