Despite his foreign origin, the term watt is included in the Larousse dictionary online. In fact, it is the name of the engineer and mathematician James Watt (1736-1819), a scientist who has done a job of great importance in creating the steam engine.
This Scots invented instruments for mathematical application of the Glasgow University and has built several Newcomen engines until it arrives to refine and develop the system. In 1784, he filed a patent for the steam engine and sixteen years later, he went to live at Heathfield Hall during his retirement, English a locality on the outskirts of Birmingham.
In order to really understand this concept, it must first establish that of electrical energy, which has to do with the ability of equipment to function with a given amount of 'fuel '. By plugging a device under voltage, energy that comes against him begins to flow through the conductor and allows that the device starts to activate the functions for which it has been programmed. Example: a lamp lights when you press the light button. Energy is not a thing that can create or destroy, but rather that it transforms. Electrical energy, for example transforms all enabling to get light, heat, cold, or movement.
Energy can be measured in several ways, depending on how it is represented, that is, depending on whether it is electric, hydraulic, wind or heat. With regard to hydropower (that found in liquids), its power can be measured by calculating the amount of litres can be transferred in one second, while power lets you know how fast electrical energy turns into heat, movement or in any form this type of energy can be converted.
In other words, power (thus represented by the watt) established how quickly power can turn. It is a unit that is used in the International system of units (SI) and which is written under the symbol W, which derives from the bases of the SI and equivalent to 1 Joule per second (1J/s). The Joule is the measure which is used to count the amount of energy that is used and it is represented by the letter J. This means that if you eat 1 Joule in one second, then are being consume 1 watt of electrical power.
As a unit belonging to the SI, watt was accepted at the second Congress of the British Association for the advancement of Science in 1889 and by the XI Conference General weights and measures which took place in 1960.
Within the meaning of the units used in electricity, the term watt is the power generated from the difference between the electric current of one ampere (1 VA) and a watt. However, low power electrical devices can be defined on the basis of their watts, while those high power rely on kilowatts (kW). A kW is equal to 1,000 watts and 1,35984 HP (horsepower).
The megawatt, whose symbol is MW, is also a unit which is derived from the watt. It is equivalent to a million watts. This unit of measurement is used in the greatest electric motors, laser machines and warships.
It should be noted that if energy distributions are consistent, which is the case of almost all electric power providers, it is sure and certain that the current that runs through the circuit is even greater than the importance of the power of the electrical equipment used. Nowadays, companies typically send a voltage of less than 220 V, reason why it wastes more energy and that the devices eventually catch fire by reducing the voltage (because the adverse shift in the electric movement).
Finally, about consumption of an electrical device, just read the metal plate which is usually on the rear part of the appliance. It is very important that devices are not powered at a voltage lower than that which is recommended to them. In the event of voltage drop, immediately unplug it from the outlet or they may burn.