A diagram that illustrates all the varieties of electromagnetic waves based on their relative frequency/wavelengths. Our eyes observe only a small amount of this spectrum.
Speed of light:
In a vacuum 3x108 m/s. It was first calculated by Olaus Roemer. Albert Michelson also performed an experiment to refine the value.
Principle of superposition:
When two or more waves occupy the same region of space simultaneously, the resulting wave disturbance is the sum of separate waves.
Two or more waves superimposing to create a resulting wave that has a larger amplitude.
Two or more waves superimposing to create a resulting wave that has a smaller amplitude.
Thin film interference:
The principle that creates colors on thin layers of transparent substances. The light reflecting off the interior of the substance interferes with light reflecting off the exterior.
Every point on a wave front acts as a source of tiny wavelets. The wave front at a later time is the surface that is tangent to the wavelets.
The ability to distinguish two distinct points from a distance.
Light wave that are all in phase or in step.
Light waves that possess the same frequency, color, or wavelength.
The bending of waves around obstacles, corners, or openings.
Light where the electric field fluctuates in only one direction.