Filaments in bulbs typically have high resistance, which allows them to generate light and heat energy efficiently when electricity passes through them. The high resistance causes the filament to heat up and emit light.
Electricity use is measured in watts (energy). Power is enery use in a unit of time (watts per hour or watt/hr). The electric companies charge us for the number of watts we use in hours, or watt-hours. A watt is 1volt times 1 amp. An electric bulb rated at 120 watts at 12 volts will draw a current of 10 amps. A 120 watt bulb using 120 volts will draw one amp. The filment in a 12 volt build must by necessity be of a larger diameter to carry the higher current, but will use the same energy 120 watts. Of course when we use the transformer it has losses which will add to the overal electrical consumption but it will normally be small. Motorhome use this 12 volt lighting scheme to great advanage by using 12 volt lighting run on DC batteries and only uses the engine or generator every now and then to charge the batteries.
it is the part of that flower
it helps the plant and the pollen because of the pollen the bugs get.
Most often it is tungsten.
Theres no way without breaking the bulb
Theres no way to do it without breaking the bulb
Filaments in bulbs typically have high resistance, which allows them to generate light and heat energy efficiently when electricity passes through them. The high resistance causes the filament to heat up and emit light.
The switch its self has no power. When you flip the switch it connects the circuit allowing electricity to flow through to the light bulb. The lightbulb works by creating resistance(the filment) which gives off energy in the form of heat and light. So what gives it power is you :).
A lamp has two resistances: a 'hot' resistance (its operating resistance) and its 'cold' resistance (its resistance when switched off), and the hot resistance is significantly higher than its cold resistance.You can calculate its 'hot' resistance from its rated power and its rated voltage (assuming that it is being supplied at its rated voltage), by manipulating the following equation, to make Rthe subject: P= V2/RYou will, though, have to measure its cold resistance.
have you replaced a brake light bulb? if you have a combined sidelight and brakelight you need a double contact bulb. if someone has fitted a single contact bulb, eg an indicator bulb, the terminal touches both the brake and sidelight terminals crossing them out, bringing sidelights on when brake and brakelights when s/lights switched on. hope this helps
Early bulbs were made of glass, blown into a bulb shape, using techniques already common in making glass drinking vessels and ornaments. The filment is inserted at the open end and the glass re-heated to form a seal. The air is drawn out using a suction pump, either attached at the same free end or through the opposite end via a tube. The glass being re-melted to keep a vucuum inside the bulb. Early experiments in making the bulb, made bulbs in the form of a football, with a point at both ends, where the air has been drawn out. It is important to remove the air, to stop the oxygen burning up the filament as it glows white hot. Modern bulbs replace the air with an inert gas, which does the same job.
Electricity use is measured in watts (energy). Power is enery use in a unit of time (watts per hour or watt/hr). The electric companies charge us for the number of watts we use in hours, or watt-hours. A watt is 1volt times 1 amp. An electric bulb rated at 120 watts at 12 volts will draw a current of 10 amps. A 120 watt bulb using 120 volts will draw one amp. The filment in a 12 volt build must by necessity be of a larger diameter to carry the higher current, but will use the same energy 120 watts. Of course when we use the transformer it has losses which will add to the overal electrical consumption but it will normally be small. Motorhome use this 12 volt lighting scheme to great advanage by using 12 volt lighting run on DC batteries and only uses the engine or generator every now and then to charge the batteries.
Steven J. Sasson (b. 1950) is an electrical engineer who is credited with inventing the digital imaging sensor, while working with supervisor Gareth A. Lloyd at the Eastman Kodak Company.In 1978, Sasson and Lloyd were issued United States Patent 4,131,919 for their digital camera.* The charge-coupled device used in digital cameras was invented in 1969 at AT&T Bell Labs by Willard Boyle and George E. Smith.(see related link)Steven Sasson as an engineer at Eastman Kodak invented and built the first digital camera using a charge-coupled device image sensor in 1975.Kodak engineer Steve Sasson