The older scales were based on theoretical estimates of the conversion efficiency of kinetic energy into light.

The reason for this is that the loss of efficiency produces heat as a by-product of the energy lost during the conversion of power.

The advantage of the BTK design is a much greater energy efficiency compared with clamp or scove kilns.

Once in place, concrete offers significant energy efficiency over the lifetime of a building.

Use of the Kalina cycle during production can also increase energy efficiency.

A high compression ratio is desirable because it allows an engine to extract more mechanical energy from a given mass of air-fuel mixture due to its higher thermal efficiency.

One apparent advantage of the cable car is its relative energy efficiency, because of the economy of centrally located power stations, and the ability of descending cars to transfer energy to ascending cars.

They are driven only by convection and thus have a very low energy efficiency.

The goal of multi-effect distillation is to increase the energy efficiency of the process, for use in desalination, or in some cases one stage in the production of ultrapure water.

* Power needed to operate ( Energy per time ; energy per byte accessed ), Energy efficiency, Heat to dissipate.

The energy intake from food is limited by the efficiency of digestion and the efficiency of utilization.

* Power needed to operate ( Energy per time ; energy per byte accessed ), Energy efficiency, Heat to dissipate.

The fuel cell can turn the chemical energy bound in hydrocarbon gases or hydrogen directly into electrical energy with much higher efficiency than any combustion process ; such devices have powered many spacecraft and are being applied to grid energy storage for the public power system.

To reduce the electric energy consumption from motors and their associated carbon footprints, various regulatory authorities in many countries have introduced and implemented legislation to encourage the manufacture and use of higher efficiency electric motors.

The electrical energy efficiency of a typical industrial induction motor can be improved by: 1 ) reducing the electrical losses in the stator windings ( e. g., by increasing the cross-sectional area of the conductor, improving the winding technique, and using materials with higher electrical conductivities, such as copper ), 2 ) reducing the electrical losses in the rotor coil or casting ( e. g., by using materials with higher electrical conductivities, such as copper ), 3 ) reducing magnetic losses by using better quality magnetic steel, 4 ) improving the aerodynamics of motors to reduce mechanical windage losses, 5 ) improving bearings to reduce friction losses, and 6 ) minimizing manufacturing tolerances.

For further discussion on this subject, see Premium efficiency and Copper in energy efficient motors.

When energy is in a form other than thermal energy, it may be transformed with good or even perfect efficiency, to any other type of energy, including electricity or production of new particles of matter.

With thermal energy, however, there are often limits to the efficiency of the conversion to other forms of energy, as described by the second law of thermodynamics.

* Electromagnetic induction, where an electrical generator, dynamo or alternator transforms kinetic energy ( energy of motion ) into electricity.

Almost all commercial electrical generation is done using electromagnetic induction, in which mechanical energy forces an electrical generator to rotate.

This drives a generator, which converts mechanical energy into electricity by magnetic induction.

The circuit diagram of the Model 102 shows the direct connection of the receiver to the line, while the transmitter was induction coupled, with energy supplied by a local battery.

Radio-frequency induction or RF induction is the use of a radio frequency magnetic field to transfer energy by means of electromagnetic induction in the near field.

In the case of an electrical generator, a time-varying magnetic field inside the generator creates an electric field via electromagnetic induction, which in turn creates an energy difference between generator terminals.

The heat energy to fuel a furnace may be supplied directly by fuel combustion, by electricity such as the electric arc furnace, or through induction heating in induction furnaces.

Ions can be created in an inductively coupled plasma, which is a plasma source in which the energy is supplied by electrical currents which are produced by electromagnetic induction, that is, by time-varying magnetic fields.

Nonmagnetic materials and electrical insulators such as plastics can be induction-welded by implanting them with metallic or ferromagnetic compounds, called susceptors, that absorb the electromagnetic energy from the induction coil, become hot, and lose their heat to the surrounding material by thermal conduction.

A high frequency current does not pass for long distances along a conductor but rapidly transfers its energy by induction to adjacent conductors.

* 2010: Haier Group debuts “ the world's first ” completely wireless LCD television at CES 2010 based on Prof. Marin Soljacic's follow-up research on the 1894 electrodynamic induction wireless energy transmission method and the Wireless Home Digital Interface ( WHDI ).

The electron beam system would be powered by a set of induction coils tapping energy from the plasma exhaust stream.

Using Faraday's law of induction, it is evident that MSMAs may be used for energy harvesting using a pickup coil, or inductor.

With resonant electrostatic induction, capacitive induction is used to wirelessly transfer energy, with ( typically ) inductively loaded capacitive plates.

When the flux changes — because B changes, or because the wire loop is moved or deformed, or both — Faraday's law of induction says that the wire loop acquires an EMF, defined as the energy available per unit charge that travels once around the wire loop ( the unit of EMF is the volt ).

An inductively coupled plasma ( ICP ) is a type of plasma source in which the energy is supplied by electric currents which are produced by electromagnetic induction, that is, by time-varying magnetic fields.

These susceptors absorb electromagnetic energy from an induction coil, become hot, and lose their heat energy to the surrounding material by thermal conduction.

Electric motors convert electrical energy into mechanical motion, pneumatic motors use compressed air and others, such as clockwork motors in wind-up toys use elastic energy.

In biological systems, molecular motors like myosins in muscles use chemical energy to create motion.

Some motors are powered by potential energy, for example some funiculars, gravity plane and ropeway conveyors have used potential energy of water or rocks, and some clocks have a weight that falls under gravity.

Other forms of potential energy include compressed gases ( such as pneumatic motors ), springs ( clockwork motors ) and elastic bands.

Electronics is distinct from electrical and electro-mechanical science and technology, which deals with the generation, distribution, switching, storage and conversion of electrical energy to and from other energy forms using wires, motors, generators, batteries, switches, relays, transformers, resistors and other passive components.

For more information about the conductivity of the winding material, see: Copper in energy efficient motors # Electrical conductivity in motor coils.

No absolute theoretical limit is known for the size, acceleration or muzzle energy of linear motors.

They have been considered for use as weapons, since current armour-piercing ammunition tends to consist of small rounds with very high kinetic energy, for which just such motors are suitable.

* Electric motors and generators: Some electric motors rely upon a combination of an electromagnet and a permanent magnet, and, much like loudspeakers, they convert electric energy into mechanical energy.