7 (g) Coherent and Incoherent Light
Lasers
When you turn on a flashlight, the light spreads out as it travels. Ordinary light is made up of different colors and wavelengths. Laser light is different from ordinary light. Laser light consists of light waves that all have the same wavelength, or color. The waves are coherent, or in step. All of the crests of the waves align with one another
When you turn on a flashlight, the light spreads out as it travels. Ordinary light is made up of different colors and wavelengths. Laser light is different from ordinary light. Laser light consists of light waves that all have the same wavelength, or color. The waves are coherent, or in step. All of the crests of the waves align with one another
What Is a Laser?
A laser is a device that produces a narrow beam of coherent light.
A laser is a device that produces a narrow beam of coherent light.
