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www.reference.com/article/make-potato-clock-8f25b01c03e6c6de

To make a potato clock, connect two potatoes to a low-voltage LED digital clock with copper wire, galvanized nails and alligator clips. This easy chemistry project demonstrates the concept of electrochemical cells, in which chemical energy is converted to electrical energy.

www.reference.com/article/clocks-change-b8b6a58ae514e2ee

The clocks change due to Daylight Saving Time, which starts on the second Sunday in March and ends on the first Sunday in November, as of 2014. People in participating states and territories change their clocks at 2 a.m. on these days.

www.reference.com/article/clock-system-b1dc6e99a15cc150

A clock system, or clock network, refers to a fully synchronized network of clocks in constant communication with each other and in which each clock displays precisely the same time as all the others within the system. Although clock networks are commonly employed as synchronized timekeepers in scho

www.reference.com/article/history-clocks-839d23a4ecf04c14

The history of clocks includes timekeeping and sundials established thousands of years ago by ancient civilizations, water clocks in the second century B.C. and the tower clock in the 11th century A.D. Europeans built the first mechanical clock in the 1200s and the first wristwatch in the 1500s.

www.reference.com/article/national-time-clock-358ef2ecad42b046

The national time clock for the United states is the clock that is used to measure the time used as the country's standard time. It is known as the Master Clock and is maintained by the United States Naval Observatory, which continuously displays the current time on its website.

www.reference.com/article/death-clock-df3f2ee8372253d5

A death clock is a life expectancy calculator. Some of the factors considered in the calculation are age, gender, geographic location, amount of tobacco and alcohol consumed, emotional outlook, and body mass index.

www.reference.com/article/stop-clock-game-fb174ba61539fb5b

The Stop the Clock game is a learning activity directed toward second- to third-grade students that uses several clocks to help teach them how to tell time. Each clock is set at different time intervals and each player has a chance to set the clocks at the appropriate time. Once a player is finished

www.reference.com/article/teaching-time-clock-40d51feecbde08bc

A teaching time clock is a clock that is created specifically to help young students learn how to tell time. These clocks normally include features such as large numbers, movable hands and bright colors to keep students engaged in the learning process.

www.reference.com/article/invented-clock-302661920b50a0ce

While devices to measure time have existed for thousands of years, the first mechanical clock was created in 725 by Yi Xing and Liang Lingzan in China. This was the first clock to use an escapement mechanism rather than relying on the flow of water to measure time.

www.reference.com/article/can-grow-potato-potato-885b988c8c12cb80

A potato that is sprouting can be planted in order to grow more potatoes, according to GrowVeg.com. Potatoes that haven't started sprouting, however, are dormant and won't grow until dormancy has been broken.