Innovation: A new method, product, or idea, or an improvement on an existing one.
Laser: A device that amplifies the energy of light by aligning the crests and troughs of the light waves. The term laser is an acronym that stands for “light amplification by stimulated emission of radiation.”
Law of reflection: States that the angle of the incident (incoming) light is equal to the angle of the reflected (outgoing) light.
Monochromatic light: Light that has only one wavelength so that it is only one color.
Photoresistor: An electrical device whose resistance to electrical flow through it decreases as the intensity of light shining on it increases.