Question

what is the four differences between laser light and light from incandescent lamp​

Answer 1

Answer:

• An incandescent bulb puts out light in every direction at the same time. This is why it lights entire rooms when on. Lasers emit light in a single, narrow beam, lighting only a small area.
• A laser generates a beam of very intense light.
• The major difference between laser light and light generated by white light sources (such as a light bulb) is that laser light is monochromatic, directional and coherent.
• Monochromatic means that all of the light produced by the laser is of a single wavelength.
• Laser light is less concentrated.
• Laser light has a beam that spreads out.
• Laser light is made of one specific color

Answer 2

Answer: LASER source consist of active elements while incandescent light source are passive. Also, LASER has very high radiant intensity which means it can be projected by very fine solid angle area, whereas incandescent light have wide spread radiant area. Typical active LASER sources are: Gas Lasers: He, Ne, Argon ion; Liquid Lasers: Dyes; Eximer Lasers

Explanation: