News tagged with clock

New cell models for tracking body clock gene function

The consequences of modern life—shift work, cell phone addiction, and travel across time zones—all disturb internal clocks. These are found in the brain where they regulate sleep and throughout the body where they regulate ...

Apr 09, 2014
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Sleep disrupted? maybe it's Daylight Saving Time

(HealthDay)—Sleep problems may surface for some after clocks were moved forward an hour Sunday morning for Daylight Saving Time because many people have difficulty changing their body clocks, a sleep expert ...

Mar 10, 2014
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Clock

A clock is an instrument used to indicate, keep, and co-ordinate time. The word clock is derived ultimately (via Dutch, Northern French, and Medieval Latin) from the Celtic words clagan and clocca meaning "bell". A silent instrument missing such a mechanism has traditionally been known as a timepiece. In general usage today a "clock" refers to any device for measuring and displaying the time. Watches and other timepieces that can be carried on one's person are often distinguished from clocks.

The clock is one of the oldest human inventions, meeting the need to consistently measure intervals of time shorter than the natural units: the day; the lunar month; and the year. Devices operating on several different physical processes have been used over the millennia, culminating in the clocks of today.

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