Is light kinetic or potential energy?
Energy comes in two basic forms: potential and kinetic. Potential Energy is any type of stored energy. It can be chemical, nuclear, gravitational, or mechanical. Electricity is the kinetic energy of flowing electrons between atoms.
Electricity flows through a thin wire in the light bulb called the filament. Therefore as a result of this, the filament heats up and starts glowing, converting electrical energy to light energy. This is because of the Joule-effect, which means that resistances heat up when electrical current runs through them.
- With newer light bulbs designed to use less energy, wattage is no longer a reliable way to gauge a light bulb's brightness. Lumens measure brightness. A standard 60-watt incandescent bulb, for example, produces about 800 lumens of light. By comparison, a CFL bulb produces that same 800 lumens using less than 15 watts.
- As the current travels through the wires and the filament, the filament heats up to the point where it begins to emit photons, which are small packets of visible light. In a typical 60-watt light bulb, the filament is made of a long, thin length of tungsten metal. They generate a lot of heat.
- The electric light, one of the everyday conveniences that most affects our lives, was invented in 1879 by Thomas Alva Edison. He was neither the first nor the only person trying to invent an incandescent light bulb. Function: An electric lamp in which a filament is heated to incandescence by an electric current.
Updated: 2nd October 2019