With the motion of the beam this revolved around, and turned, the ' sun ' a second rotating cog fixed to and which turned the drive shaft.

* By rotating its two sets of powered wheels about each other, the iBOT can " walk " up and down stairs, much like a cog railway or a rack and pinion with the two wheels as the " teeth " of the gear.

With the motion of the beam, this revolved around, and turned, the ' sun ', a second rotating cog fixed to the drive shaft, thus generating rotary motion.

By rotating the daisy wheel, different characters are selected for printing.

Some have pointed out that the constellation is on the celestial equator and have suggested that the stars rotating in the night sky may have been associated with Frigg's spinning wheel.

Nor could the atmospheric engine be easily adapted to drive a rotating wheel, although Wasborough and Pickard did succeed in doing so towards 1780.

It used a rotating color wheel, reduced the number of scan lines from 525 to 405, and increased the field rate from 60 to 144, but had an effective frame rate of only 24 frames per second.

The tip of the top follows a cycloidal trajectory as if it were a point on a rotating wheel.

Section dm < sub > 1 </ sub >, therefore, has a lot of angular rotating velocity with respect to the rotation around the pivot axis, and as dm < sub > 1 </ sub > is forced closer to the pivot axis of the rotation ( by the wheel spinning further ), due to the Coriolis effect dm < sub > 1 </ sub > tends to move in the direction of the top-left arrow in the diagram ( shown at 45 °) in the direction of rotation around the pivot axis.

Section dm < sub > 2 </ sub > of the wheel starts out at the vertical pivot axis, and thus initially has zero angular rotating velocity with respect to the rotation around the pivot axis, before the wheel spins further.

Images were scanned electrically, but the system still used a moving part: the transparent RGB color wheel rotating at above 1, 200 rpm in synchronism with the vertical scan.

In the 1940s Cyril Pullin developed the Powerwheel, a wheel with a rotating one-cylinder engine, clutch and drum brake inside the hub, but it never entered production.

He realized that a lever, pulley, and wheel and axle are in essence the same device: a body rotating about a hinge.

On older models, steering is controlled by a twist grip on the left handlebar, which simply varies the speeds between the two motors, rotating the Segway PT ( a decrease in the speed of the left wheel would turn the Segway PT to the left ).

It is often a part of a rotating wheel ( e. g. an eccentric wheel ) or shaft ( e. g. a cylinder with an irregular shape ) that strikes a lever at one or more points on its circular path.

Certain cams can be characterized by their displacement diagrams, which reflect the changing position a roller follower ( a shaft with a rotating wheel at the end ) would make as the cam rotates about an axis.

: Postcards with a rotating wheel that reveals a myriad of colours when turned.

Su's tower featured a rotating gear wheel with 133 clock jack manikins who were timed to rotate past shuttered windows while ringing gongs and bells, banging drums, and presenting announcement plaques.

Fibre is extracted by a process known as decortication, where leaves are crushed and beaten by a rotating wheel set with blunt knives, so that only fibres remain.

The centripetal turbine wheel drives a centrifugal compressor wheel through a common rotating shaft.

Early machines used a xenon flash lamp, and projected an image mounted in a rotating aperture wheel onto the photosensitive surface of the film or glass plate.

Night Gallery was initially part of a rotating anthology or wheel series called Four in One.

Maxwell used a gear wheel and called it an " idle wheel " to explain the electrical current as a rotation of particles in opposite directions to that of the rotating field lines.

Likewise, Kant formulated the nebular hypothesis, according to which the solar system was evolved from a rotating mass of incandescent gas, nearly a half century before its scientific value was made plain by Laplace in his Systeme Du Monde.

When a tank destroyer was used against enemy tanks from a defensive position, eg by ambush, a rotating turret was not particularly critical and where a low silhouette was paramount not desirable.

This process was helped by the discovery of pulsars in 1967, which, by 1969, were shown to be rapidly rotating neutron stars.

Isaac Newton's rotating bucket argument ( also known as " Newton's bucket ") was designed to demonstrate that true rotational motion cannot be defined as the relative rotation of the body with respect to the immediately surrounding bodies.

The series was part of the rotating NBC Wednesday Mystery Movie anthology.

Some types of self-starting synchronous motors always started when power was applied, but in detail, their behavior was chaotic and they were equally likely to start rotating in the wrong direction.

Once a diver is completely under the water they may choose to roll or scoop in the same direction their dive was rotating to pull their legs into a more vertical position.

The main element of Baudot's system was the distributor in which a rotating contact made brief contact with a series of sectors.

At the receiving end, a handset ’ s speaker was attached to an acoustic coupler ( a microphone ), and a demodulator converted the varying tone into a variable current that controlled the mechanical movement of a pen or pencil to reproduce the image on a blank sheet of paper on an identical drum rotating at the same rate.

The first weapon generally considered in this category is the Gatling gun, originally a carriage-mounted, crank-operated firearm with multiple rotating barrels that was fielded in the American Civil War.

In the 1970s it was discovered in Vera Rubin's study of the rotation speed of gas in galaxies that the total visible mass ( from the stars and gas ) does not properly account for the speed of the rotating gas.

Originally this was with a mortar-and-pestle or a similarly operating stamping-mill, using copper, bronze or other non-sparking materials, until supplanted by the rotating ball mill principle with non-sparking bronze or lead.

For the band's R30 tour, one dryer was replaced with a rotating shelf-style vending machine.

The original Gatling gun was a field weapon which used multiple rotating barrels turned by a hand crank, and firing loose ( no links or belt ) metal cartridge ammunition using a gravity feed system from a hopper.

The Gatling gun's innovation lay neither in the rotating mechanism ( featured by many revolvers of the day ) nor in the use of multiple barrels to limit overheating ( used by the mitrailleuse gun ); rather, the innovation was the gravity feed reloading mechanism, which allowed unskilled operators to achieve a relatively high rate of fire of 200 rounds per minute.

After the Gatling gun was replaced in service by newer recoil-or gas-operated non-rotating machine guns and automatic cannons, the approach of using multiple rotating barrels fell into disuse for many decades, reappearing after World War II with the development of the M61 Vulcan.

Initially this was done because it was easier to provide good insulation for the secondary winding of an external coil than it was in a coil buried in the construction of the magneto ( early magnetos had the coil assembly externally to the rotating parts to make them easier to insulate — at the expense of efficiency ).

The innovation introduced with the screw propeller was the extension of that arc through more than 360 ° by attaching the blade to a rotating shaft.