Light Bulbs and Artificial Lighting

Define "light bulb"

There are a few.
To make it easier here is the complete list of bulbs and lamps for the 7th Generation Celica:
Low beam headlamp H7 High beam headlamp 9005 Parking light 168 Front turn signal 7507A 7507AST 194 194LL Long Life Upgrade: Up to twice the life of the standard lamp Rear turn signal 7440 Tail light 7443 Stop light 7443 High mount stop light Assembly Fog/Driving light H3-55W License plate 168 Back up light 921 921LL Long Life Upgrade: Up to twice the life of the standard lamp Front sidemarker 168 Rear sidemarker 7443 Glove box 37 Map light DE3175 Dome light 293 DE3175

1. In 1761, Ebenezer Kinnersley demonstrated heating a bare copper wire to incandescence. It burned out rapidly but proved the concept.
2. In 1802, Humphry Davy used a battery consisting of 2,000 cells housed in the basement of the Royal Institution of Great Britain to create an incandescent lamp by passing the current through a thin strip of platinum, chosen because the metal had an extremely high melting point. It was not bright enough nor did it last long enough to be practical, but it was the precedent behind the efforts of scores of experimenters over the next 75 years.
3. In 1838, the Belgian lithographer Marcellin Jobard invented the first true incandescent light bulb with a vacuum atmosphere using a carbon filament inside a blown glass tube. Previous incandescent lights the filament/wire/strip was exposed to the ordinary air and thus did not resemble "bulbs".

None, they don't know how.

Actually the peak of the radiation from an incandescent light bulb is in the near infrared, not the visible spectrum. The visible light that you see is the falling upper sideband of this: very strong in the red and declining until it is weak in the blue and violet end with a very small amount of radiation in the ultraviolet. The lower sideband extends across the infrared and into the far infrared. Well under a third of the emitted electromagnetic radiation of an incandescent light bulb is visible light, most is infrared.

Seventeen and a half.
A. Purple. (Or fish.) A. Three. Two to fill the bathtub with clocks, and one to set the giraffe on fire....

They used to be incandescent, but more and more often now manufacturers are using LEDs.

What you are refering to is the use of a variable resistor. It has a shaft on it that when turned either clockwise or counter clockwise it dims or brightens the bulb. It does this by proportinally dropping voltage accross itself. However, a better method would be to use a series resonance circuit using an inductor and capacitor. This would dissipate less electrical energy as heat. Unfortunately, I can't send you a jpeg of this here but do a google for resonance and what you need will be there.

As an ordinary light bulb will illuminate the whole pool, not just a circle you must be thinking of a spotlight bulb. The answer will depend on how tightly focused the spotlight is.

The effect of a light bulb is to release light, and heat. By running an electrical current (110-120V in US) through a filament inside a vacuum bulb. You get the desired effect of light along with heat as well. Different coatings and types of lighting have been produced over the years. Such as Flourescent, Metalhalide, High pressure sodium, incandescent. Each is specified for different applications but the effect of these are generally the same light and heat.

False. Low heat light bulbs can produce the same amount of light, and also save on energy.

it depends,the flourecent kind hols 60 watts,lumens has 120 and they last for 10,000 hours.

LEDs, light bulbs, candles, oil lamps, campfires, etc.

When extra dry cells are added to a series circuit containing a light bulb, the total voltage supplied to the circuit increases. This higher voltage can lead to an increase in the current flowing through the circuit, which may cause the light bulb to shine brighter. However, if the voltage exceeds the bulb's rated capacity, it could overheat and potentially burn out or become damaged. Therefore, caution should be taken when adding extra cells to avoid damaging the bulb.

On average, a 32W T8 fluorescent bulb running 24 hours a day for 30 days at an average electricity rate of $0.12 per kilowatt-hour would cost about $7.84 per month.

The electric light bulb was invented by Thomas Edison, an American inventor. He filed for the patent in 1879 and improved upon several previous designs to create a practical and commercially viable light bulb. There is no evidence to suggest that he was Canadian.

No, a fluorescent light fitting typically requires a capacitor to function properly. The capacitor helps to regulate the electrical current and improves the efficiency of the light, ensuring stable operation and reducing flickering. Without it, the fluorescent lamp may not start, or it could flicker and have a shorter lifespan.