the question is phrased poorly, but i think the answer is seven, as in white light is split into seven different wavelengths when passed through a prism.
A beam of light is made up of a stream of many photons.
4
It does depend on the kind of laser, but the main difference is that a laser emits a focused beam of light of the same wavelength (i.e. color) while a flashlight emits light of many different wavelengths, and 'beams' this light by reflecting it using a concave mirror built into it behind/around the bulb.
A laser, by its very action of amplification of light, tends to be monochromatic. (one colour). But lasers may be made in several different colours depending on the materials used.
More than 1. Describing the intensity of the beam will establish the number of photons per second striek a perpendicular surface of a given area.
A beam of light is made up of a stream of many photons.
On a four headlight system there are two filaments for the inner lights. They have a filament for a high beam and one for a low beam.
fairy lights aremade out of many small lights. the lights are like the lights you put on a Christmas tree, but smaller. they are filled with gasses used in go green light bulbs.
Black is the absence of color. Black lights emit very little visible light. They are mostly designed to emitt radiation near the ultraviolet range. Black lights are made up of many different things. You can type in the phrase 'black light' and answers.com will give you more information.
Yes, if they are the same type of lights, having twice as many lumens gives you twice as much light, regardless of how many lights you need.
100 metres?
4
there are only one type of LED lights. a bunch of LED lights is Three light.
On an average car, there are high and low beam lights for night driving, clearance lights on the front and back, front and rear turn signals, and back-up lights used when backing up.
They are still there. But they are hidden by the pollution and by the lights. The city of Lights has so many lights that it overpowers the light of the stars.
It does depend on the kind of laser, but the main difference is that a laser emits a focused beam of light of the same wavelength (i.e. color) while a flashlight emits light of many different wavelengths, and 'beams' this light by reflecting it using a concave mirror built into it behind/around the bulb.
100,000