Cardano invented several mechanical devices including the combination lock, the gimbal consisting of three concentric rings allowing a supported compass or gyroscope to rotate freely, and the Cardan shaft with universal joints, which allows the transmission of rotary motion at various angles and is used in vehicles to this day.

Other early versions of mechanical devices used to perform one or another type of calculations include the planisphere and other mechanical computing devices invented by Abū Rayhān al-Bīrūnī ( c. AD 1000 ); the equatorium and universal latitude-independent astrolabe by Abū Ishāq Ibrāhīm al-Zarqālī ( c. AD 1015 ); the astronomical analog computers of other medieval Muslim astronomers and engineers ; and the astronomical clock tower of Su Song ( c. AD 1090 ) during the Song Dynasty.

In some fiction, a contemporary, " real-world " character is placed in the invented world, sometimes through framing devices such as portals to other worlds or even subconscious travels.

These devices employed compound semiconductor chips fabricated with the planar process invented by Dr. Jean Hoerni at Fairchild Semiconductor.

* Mirrors are employed in kaleidoscopes, personal entertainment devices invented in Scotland by Sir David Brewster.

Electrochemical devices called fuel cells were invented about the same time as the battery in the 19th Century.

Subsequently, Fred Wolf invented, and obtained U. S. patents on, several new gaming devices which included " Three-special-dice ", and games such as " Sweepstakes Blackjack ", " Fast-action hold ' em ", " Lucky Pan-9 " and " Pai Gow jokers ".

It is one of the earliest controlled fusion devices, first invented by Lyman Spitzer in 1950 and built the next year at what later became the Princeton Plasma Physics Laboratory.

Multimeters were invented in the early 1920s as radio receivers and other vacuum tube electronic devices became more common.

He also invented numerous other devices, including a 31-tone-to-the-octave keyboard instrument that made use of his discovery of 31 equal temperament.

Various devices have been invented to hold candles, from simple tabletop candle holders, to elaborate chandeliers.

Many simple seed-removing devices have been invented over the years, but most required significant operator attention and worked on a small scale.

Before numbers were even invented, counting devices were used to perform everyday calculations ; one of these devices was the abacus, which provided merchants good and accurate data when buying and selling goods.

invented by Dave Yost ( and popularized by the Unix System Administration Handbook ) is common on Unix computers and newer devices from Cisco Systems.

In the early 1990s dedicated digital devices were invented specifically for use in live looping i. e. loops that are recorded in front of a live audience.

He has invented various devices he uses as weapons.

Many persons claim to have invented perpetual motion machines and other power generating devices supposedly based on zero-point energy.

" Inside the cathedral entrance is this epitaph: " Both the magnificent dome of this famous church and many other devices invented by Filippo the architect, bear witness to his superb skill.

The contract gave the Weather Bureau access to any devices Fessenden invented, but he would retain ownership of his inventions.

Wood was hired by the Sewerage & Water Board of New Orleans in 1899 to try to improve the flood-prone city's drainage, Wood invented " flapgates " and other hydraulic devices, most notably efficient low maintenance high volume pumps, including the Wood Screw Pump ( 1913 ) and the Wood Trash Pump ( 1915 ).

Rigby is also the home of Wayne Quinton, who invented the treadmill and over thirty biomedical devices.

Anderson is a pioneer in electronic music and has invented several devices that she has used in her recordings and performance art shows.

Julian also invented some safety devices used in airplanes.

If there were no West Berlin problem, imperialist quarters would have invented an excuse for stepping up the armaments race to try to solve the internal and external problems besetting the United States and its NATO partners.

He had a mean, unbroken sheer bastard in his outfit, and someone invented the name Trig for him.

Timothy Palmer, who invented and later patented the arch type of construction for wooden bridges, was the genius who planned and supervised the building of the Essex, or `` Deer Island '' bridge although the actual work was carried out under the direction of William Coombs, who received $300 as recompense.

Abjads differ from abugidas, another category invented by Daniels, in that in abjads, the vowel sound is implied by phonology, and where vowel marks exist for the system, such as nikkud for Hebrew and harakāt for Arabic, their use is optional and not the dominant ( or literate ) form.

American Richard Danforth invented the Danforth pattern in the 1940s for use aboard landing craft.

It was invented by Robert Stevenson, for use by an 82-ton converted fishing boat, Pharos, which was used as a lightvessel between 1807 and 1810 near to Bell Rock whilst the lighthouse was being constructed.

These experiments also led to a number of patents: for example, he invented a new form of laminated bent-plywood furniture in 1932.

His family was wealthy and well established ; his father Euphorion was a member of the Eupatridae, the ancient nobility of Attica, though this might be a fiction that the ancients invented to account for the grandeur of his plays.

( In the 1970s Ruelle and the Dutch mathematician Floris Takens produced a new model for turbulence, and it was Ruelle who invented the concept of a strange attractor in a dynamical system.

1850 in New York City ) invented the vacuum hot table for relining paintings in 1920 ’ s, he filed a patent for the table in 1937.

The Thâbit ibn Kurrah rule is a method for discovering amicable numbers invented in the tenth century by the Arab mathematician Thâbit ibn Kurrah.

Stroustrup began developing C ++ in 1979 ( then called " C with Classes "), and, in his own words, " invented C ++, wrote its early definitions, and produced its first implementation ... chose and formulated the design criteria for C ++, designed all its major facilities, and was responsible for the processing of extension proposals in the C ++ standards committee.

The commission, which also included six other sports executives, labored for three years, after which it declared that Abner Doubleday invented the national pastime.

Several components that eventually played a key role in the development of the automobile were invented for the bicycle, including ball bearings, pneumatic tires, chain-driven sprockets, and tension-spoked wheels.

The Hanoverians, Hessians and Danes, despite earlier undertakings, found, or invented, pressing reasons for withholding their support.

Two versions of Blackwood are common: " standard " Blackwood, developed by Easley, and " Roman key card " or " RKC " Blackwood, named for the Italian team which invented it.

The earliest known tool for use in computation was the abacus, and it was thought to have been invented in Babylon circa 2400 BC.

The world's first computer printer was a 19th century mechanically driven apparatus invented by Charles Babbage for his difference engine.

The only mechanical device that existed for numerical computation at the beginning of human history was the abacus, invented in Sumeria circa 2500 BC.

Later, the Antikythera mechanism, invented some time around 100 AD in ancient Greece, was the first mechanical calculator utilizing gears of various sizes and configuration to perform calculations, which tracked the metonic cycle still used in lunar-to-solar calendars, and which is consistent for calculating the dates of the Olympiads.

The most commonly seen pattern is the grid, used for thousands of years in China, independently invented by Alexander the Great's city-planner Dinocrates of Rhodes and favoured by the Romans, while almost a rule in parts of pre-Columbian America.