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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/many-types-potatoes-1afc17262b6f11d2

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.

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/water-clocks-work-94c825812fff0b89

A water clock uses flowing water to measure time according to the National Watch and Clock Museum. Water clocks are classified as either "outflow" or "inflow" water clocks based on the way liquid moves in relationship to the primary vessel.

www.reference.com/article/clock-system-work-c6f46d19b9541882

Analog and digital clocks work by using a power source to create regular vibrations. The vibrations are converted into electrical energy and then mechanical energy, which drives the gears and hands of the clock.

www.reference.com/article/create-time-clock-cards-f18e05f62282dad8

To create a time clock card, use a word processing program, and insert a table. The rows of the table represent the available word days for the company. The six columns are "Day," "Time In" and "Time Out" twice, and "Total." In the "Day" column type the first day of the pay period either by the name

www.reference.com/article/potatoes-bad-e6582608711704d4

Potatoes do eventually go bad. Their exact shelf life depends on the type of potato, but most go bad after two to five weeks at room temperature or two to four months in a refrigerator.

www.reference.com/article/plant-potatoes-48830560cf2c8887

To plant potatoes, cut apart seed potatoes, and plant them in a trench after the last frost. Use certified disease-free seed potatoes, and avoid grocery store potatoes, which often are treated to prevent sprouting.

www.reference.com/article/grow-potatoes-d1934a0a94ca0ac

Grow potatoes by planting them at the right time, preparing the planting site, giving them enough moisture and hilling them. It takes approximately 10 weeks between planting and harvesting. To accomplish this project, you need seed potatoes, a hoe, a garden fork, compost, well-drained soil and water

www.reference.com/world-view/clean-clock-face-6a5f76e52177e31c

Cleaning a clock face or dial depends on its type of material. Antique clock faces require extra care in cleaning compared to the newer ones. In most cases, cleaning antique clock dials should be left to the expertise of a professional restorer. This ensures proper care and reduces the risk of damag