Light Bulbs and Artificial Lighting

Tungsten is the element commonly used as a filament in light bulbs. Its high melting point and ability to withstand high temperatures make it ideal for producing light when an electric current passes through it. Additionally, tungsten is resistant to corrosion, which helps extend the lifespan of the filament.

Yes

Glass, metal, inert gas.

to provide water flow througj gravity and pressure

The long, tubular ones usually rotate and slide out. The curly ones have standard light fittings. Remember to dispose of the old bulb in a designated re-cycling container for them because they contain mercury which will harm people if it gets into the environment (do not break the tubes).

They supplied a reliable source of light compared to fire and candles. They didn't burn out as quickly as fire and candles. One big thing, though maybe not exactly a technology changer, was that it was a lot safer than a fire or candle.

yes, in his library which you can check out on the tour of his factory.

Technology of the Gods by David Hatcher Childress. The light bulbs with snake-llike filaments appear to be fluorescent types, which did not exist until about l9l5 at the earliest!

Most simply, put all the light bulbs in series with the generator. The more current you can churn out the brighter theyll get.

Youll want to be careful though. Say you are using 60 watt bulbs. They each have a resistance of about 960 ohms. Therefore, if you put more than about 0.06 amps through each one, one will blow and the whole thing wont work.

To get around this, you might consider connecting each one in parallel. Then you could probably pedal as hard as you wanted to and you wouldn't blow any of them. And even if you did in that case, the rest would work fine.

I have no idea what a drag racing light tree is by the way.

The watt was named after James Watt. The term watt in electric appliances refers the rate at which energy is generated or consumed and therefore is measured in units (e.g. watts) that represent energy per unit time. An example; when a light bulb with a power rating of 100W is turned on for one hour, the energy used is 100 watt hours (The watt second is a unit of energy, equal to the joule).

This is the case in a series circuit. (like the small Christmas lights.)

I do believe it's Argon.

fluorescent

Provided the lights are shielded and ONLY point downwards - LED lights use the least amount of energy but as their light is white they can cause worse light pollution for astronomers.

All the bulbs should be the same brightness because they are all receiving the same voltage, which would be half the voltage of the original source. To visualize why this is the case, imagine the electrons moving through the circuit. The electrons can take two paths through the circuit but either way they have to pass through two light bulbs. The two bulbs in parallel may, however, appear slightly dimmer because the current is split between them and restricted by the third bulb.

Assume that the resistance of all light bulbs are equal. The current through the light bulbs in parallel will be 1/2 that through the one in series as it is split equally between the two of them. The intensity of each light bulb is proportional to the power through each bulb. Power is I2R. So, if the total current is 1 amp the power through the series light bulb is R, where the power through the parallel light bulbs will be 1/4R. Therefore the intensity of the parallel bulbs will be 1/4 the light bulb in series.

no

Light is also a kind of energy. It is transformed not as mechanical wave. Because mechanical wave definitely needs a material medium to get propagated. Sound energy is transmitted only as a mechanical wave. Without air medium sound cannot be propagated. But light does not need such material medium. It can pass even through free space in the form of electromagnetic wave.

The general concept is: When any disturbance is made any where at any time in the space that would be propagated to other places. This is what we call transmission of light disturbance.

The light bulb its self is non renewable, it is replaceable. The electricity that powers the light bulb can be renewable.

The motion sensor itself will not alter the bulb life, assuming it does not try to dim the fixture. The bulb life would be the same as if someone threw the switch each time the sensor turns on/off. From my experience, some motion sensors work poorly with florescent lights (CFLs or sometimes referred to as spiral bulbs). In my experience they flash, flicker, or stay dimly lit when the motion sensor has nothing in range. I do not know why. I put in an incandescent bulb and everything is fine. If you put a florescent bulb in and it works great then just leave it, it will have a long life. If it flashes or acts weird then, put in an old style incandescent or a halogen.

Did you recently change or install something in your car like a stereo or GPS?

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why light bulbs are fragile