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.
According to The United States Potato Board, seven types of potatoes are commonly enjoyed by consumers: russet, long white, round white, fingerlings, red, yellow and blue or purple. The potato industry refers to them as table-stock varieties.
While the George Mateljan Foundation for the World's Healthiest Foods considers potatoes an excellent source of vitamin B6, potassium, copper, vitamin C, manganese, phosphorus, niacin, dietary fiber and pantothenic acid, it cautions that most people eat potatoes deep fried with extra fat, which is u
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
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.
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.
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.
Potatoes were first eaten and cultivated in the Andean highlands of South America, between Bolivia and Peru. Spread to Europe and North America by Spanish explorers, these tubers are ranked second among the world's most staple crops.
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.
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