To illustrate the difference: The sound and the change in the air's drift velocity ( the force of the wind gust ) cross distance at rates equaling the speeds of sound and of mechanical transmission of force ( not higher than rate of drift velocity ); while a change in an EM field and the change in current ( electrons ' drift velocity ) both propagate across distance at rates much higher than the actual drift velocity.

A clutch is a mechanical device that provides for the transmission of power ( and therefore usually motion ) from one component ( the driving member ) to another ( the driven member ) when engaged, but can be disengaged.

Its main competitors were the Bélinograf by Édouard Belin first, then since the 1930s the Hellschreiber, invented in 1929 by German inventor Rudolf Hell, a pioneer in mechanical image scanning and transmission.

Having eliminated the mechanical transmission circuits in fly-by-wire flight control systems, the next step is to eliminate the bulky and heavy hydraulic circuits.

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.

In the early days of diesel railroad propulsion development, electric, hydraulic and mechanical power transmission systems were all employed with varying degrees of success.

Speed, intended to be roughly comparable to words per minute, was the standard designation introduced by Western Union for a mechanical teleprinter data transmission rate using the 5-bit baudot code that was popular in the 1940s and for several decades thereafter.

* June 13 – Charles Francis Jenkins achieves the first synchronized transmission of pictures and sound, using 48 lines, and a mechanical system.

* 8 milliseconds — 1 / 125 of a second, a standard camera shutter speed ( 125 ); fastest shifting time of a car's mechanical transmission

Electrical power transmission has replaced mechanical power transmission in all but the very shortest distances.

From the 16th century through the industrial revolution to the end of the 19th century mechanical power transmission was the norm.

In the early days of commercial electric power, transmission of electric power at the same voltage as used by lighting and mechanical loads restricted the distance between generating plant and consumers.

Sound is, by definition, the vibration of matter, so it requires a physical medium for transmission, as does other kinds of mechanical waves and heat energy.

The transmission of mechanical force and regulatory signals are quite fundamental in the normal survival of a living organism.

Focal adhesions are macromolecular structures that function in the transmission of mechanical force and regulatory signals.

Usually, many of the major mechanical systems such as the engine and transmission are sourced from donor vehicles or purchased from other vendors new.

Efforts in 1930 had shown that development of a light and efficient mechanical transmission was not a trivial undertaking.

Opposite to mechanical transmission.

The physical layer provides an electrical, mechanical, and procedural interface to the transmission medium.

Two or more gears working in tandem are called a transmission and can produce a mechanical advantage through a gear ratio and thus may be considered a simple machine.

The windscreen wipers were powered by a purely mechanical system: a cable connected to the transmission ; to reduce cost, this cable also powered the speedometer.

The car's mechanical design was conventional, with unibody construction, a longitudinally mounted engine in front driving the rear wheels through either a manual or automatic transmission and live axle rear end.

In cooperation with the " primary " motor / generator and the mechanical power-split this provides a continuously variable transmission.

This arrangement was sometimes referred to as an electric transmission, as the electric generator and driving motor replaced a mechanical transmission.

Certain initial features were subsequently revised, including mechanical drum brakes, split-window rear windows, mechanical direction-indicators and the non-synchronized gearbox.

The metering unit for the Lucas mechanical fuel injection was rotated by gear and belt from the inlet cam, while the exhaust cam drove an alternator on the rear of the head.

During the 2012 Daytona 500, during a caution on lap 160, Montoya's car spun out and collided with a track support vehicle with a jet dryer in tow due to a rear suspension mechanical malfunction, causing leaking vapors from the dryer to catch fire, leading to a lengthy red flag.

Both front and rear suspensions used transverse leaf springs, and the brakes were mechanical.

Like the R33, the new R34 GT-R V-Spec ( Victory Specification ) models come equipped with the ATTESA E-TS Pro system and an Active LSD at the rear, while standard GT-R models come with the non-Pro system and a conventional mechanical differential.

People reckoned that the rear tyre had deflated, and there is another theory that the mechanical metering unit on the Cosworth FVA engine had seized and caused Clark to crash.

Each metre-wide track, which used the same basic " contact shoe " and " connector link " design format as the Henschel-built King Tiger had used, had its own electric motor mounted in the rear of the hull ; the tracks had no direct mechanical connection to the internal combustion engine that powered the Maus.

The dual brake system used a secondary mechanical emergency brake system, which activated the rear brakes when the pedal traveled beyond the normal reach of the primary system ; a mechanical parking brake was also used.

Prior to 1961, all Ford wagons used a two-piece tailgate assembly that required the operator to lift the rear window up and locking it into place via a mechanical support, and then drop the tail gate down to fully access the rear compartment.

Historically, the first mass production car with front to rear mechanical interconnected suspension was the 1948 Citroën 2CV.

In the Mark X, the switching and level changes in the rear speakers are done automatically using a thyratron and mechanical relay system operated by means of notches on the edge of the film.

The Peugeot RD is a rear wheel drive car which has a 405 body and mechanical parts from the Paykan.

The RS version was released with a mechanical plate type rear LSD differential.

The subsequent Evolution Lancer models all featured rear mechanical plate type LSD's.

Another solution, as e. g. implemented in the Austin Princess, ( and pioneered with mechanical interconnection on the 1948 Citroen 2cv ), is to interconnect the front and the rear wheel of each side.

All of the IZh own models were based on AZLK 412 and the bodyshell ( with the exception of the rear part, which were different on 2715 / 27151 and 2125 / 21251 ) along with mechanical parts were direct copies of AZLK 412.

There is no center differential ( earlier it used to be 3 differentials, with a center / 3rd differential included ), but the new regulation allows only front and rear axle differential ( eliminating the center differential to run down on the cost and make it more economical ), and they must be mechanical, without electronic control or hydraulic or viscous systems ( from 2006 to 2010 the center differential and previously all 3 could be active ).

Changes were made for the 2009 season to increase dependency on mechanical grip and create overtaking opportunities-resulting in the return to slick tyres, a wider and lower front wing with a standardized centre section, a narrower and taller rear wing, and the diffuser being moved backwards and made taller yet less efficient at producting downforce.

The cars have wide right rear tire and a 410 cubic inch engine with mechanical fuel injection.

The A9X package varied from the old L34 in road form in that whilst the engine was not modified, the A9X nevertheless had some special mechanical features such as rear disc brakes, heavy duty axles and a heavy duty ' 10 bolt ' differential.