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On a big fancy treadmill at the YMCA, I can run at a sustained 9MPH, mile after mile -- or even faster! It would be wonderful if I could run that fast outside, on the street -- but I doubt that I can. Running outside is better in many ways, but running on a hard surface seems to wear out the joints, could be a serious problem.
Example of modern treadmill. A treadmill is a device generally used for walking, running, or climbing while staying in the same place.Treadmills were introduced before the development of powered machines to harness the power of animals or humans to do work, often a type of mill operated by a person or animal treading the steps of a treadwheel to grind grain.
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The recommended speed for walking on a treadmill while working at a computer is less than 2 miles per hour. To prevent injury, treadmill desks require compliance with the same ergonomic safety standards recommended for any computer desk, including placement such that the user's wrists are flat by the keyboard, their elbows form a 90-degree angle when typing, and their eyes may look forward to ...
A penal treadmill (penal treadwheel or everlasting staircase) was a treadwheel or treadmill with steps set into two cast iron wheels. These drove a shaft that could be used to mill corn, pump water, or connect to a large fan for resistance. [1] Penal treadmills were used in prisons during the 19th century in both Britain and the United States. [2]
A "reverse" or "inverse" sprinkler would operate by aspirating the surrounding fluid instead. The problem is commonly associated with theoretical physicist Richard Feynman, who mentions it in his bestselling memoirs Surely You're Joking, Mr. Feynman!. The problem did not originate with Feynman, nor did he publish a solution to it.
As depicted by John Tenniel in Chapter Two – The Garden of Live Flowers. The Red Queen's race is an incident that appears in Lewis Carroll's Through the Looking-Glass and involves both the Red Queen, a representation of a Queen in chess, and Alice constantly running but remaining in the same spot.