Mechanical Engineering, WHY-ŠKO
Mechanical engineering, the branch of engineering concerned with the design, manufacture, installation, and operation of engines and machines and with manufacturing processes. It is particularly concerned with forces and motion.
Mechanical Engineering Encyclopedia Articles By Title
Why Does the New Year Start on January 1?
In many countries the New Year begins on January 1. However, this wasn’t always the case. In fact, for centuries,......
Why Doesn’t Arizona Observe Daylight Saving Time?
Daylight Saving Time (DST) was introduced in countries around the world during the 20th century with the intention......
Why Doesn’t the U.S. Use the Metric System?
The United States Constitution states, in Section 8 of Article I, that Congress shall have the power to “fix the......
Why is pounds abbreviated to lbs?
The abbreviation “lbs” for the unit of weight pounds comes from the Roman term libra. The word libra means “scales”......
Wilkinson, David
David Wilkinson was an American inventor. Wilkinson was the son of a blacksmith, and in 1797 he invented a gauge......
Wilkinson, John
John Wilkinson was a British industrialist known as “the great Staffordshire ironmaster” who found new applications......
Willard, Simon
Simon Willard was a famous American clock maker. Willard was the creator of the timepiece that came to be known......
Williams, Sir Frederic
Sir Frederic Williams was a British electrical engineer who invented the Williams tube store, a cathode-ray-tube......
wind tunnel
wind tunnel, device for producing a controlled stream of air in order to study the effects of movement through......
wrench
wrench, tool, usually operated by hand, for tightening bolts and nuts. Basically, a wrench consists of a stout......
Wyatt, John
John Wyatt was an English mechanic who contributed to the development of power spinning. Wyatt began his career......
X-ray microscope
X-ray microscope, instrument that uses X-rays to produce enlarged images of small objects. The basic device uses......
X-ray tube
X-ray tube, evacuated electron tube that produces X rays by accelerating electrons to a high velocity with a high-voltage......
yard
yard, Unit of length equal to 36 inches, or 3 feet (see foot), in the U.S. Customary System or 0.9144 metre in......
year
year, time required for Earth to travel once around the Sun, about 365 1 4 days. This fractional number makes necessary......
yellow rain
yellow rain, airborne substance that was alleged to have been used in biological attacks in Southeast Asia from......
Zaharoff, Sir Basil
Sir Basil Zaharoff was an international armaments dealer and financier. Reputedly one of the richest men in the......
zhang
zhang, an old Chinese measure of length equal to 10 chi, or 3.58 metres (11 feet 9 inches). The value was agreed......
Zyklon-B
Zyklon-B, brand name for a hydrogen cyanide–based chemical compound initially created as a pesticide and rodenticide......
Ångström, Anders Jonas
Anders Jonas Ångström was a Swedish physicist, a founder of spectroscopy for whom the angstrom, a unit of length......
épée
épée, blunted sword developed in the 19th century for use in fencing practice and competition. The épée was patterned......
Škoda, Emil von
Emil von Škoda was a German engineer and industrialist who founded one of Europe’s greatest industrial complexes,......