Any disturbance that transmits energy through matter or space.

Wavelength x frequency

Prevent (a process or activity) from continuing or being carried out properly.

Focuses light onto retina.

A form of energy with wavelengths that are longer than visible light

A wave that requires a medium through which to travel.

A space where no particles of matter exist.

Material through which a wave travels.

Electromagnetic waves with the longest wavelengths and lowest frequencies.

Solid transparent object that refracts light.

The complete range of electromagnetic waves placed in order of increasing frequency.

Matter in the medium moves in the same direction that the wave travels.

Electromagnetic waves that stimulate receptors in the eye.

Curved outward.

The passage of light through an object.

The part of a longitudinal wave where the particles of the medium are far apart.

A wave that moves the medium in a direction perpendicular to the direction in which the wave travels.

A wave in which the vibration of the medium is parallel to the direction the wave travels.

Horizontal distance between the crests or between the troughs of two adjacent waves.

Not letting light through.

How many wave peaks pass a certain point per given time.

Height of a wave.

Lowest point of a wave

Highest point of a wave

The process or action by which one thing absorbs or is absorbed by another.

A device made of thousands of closely spaced slits through which light is passed in order to produce a spectrum.

A mirror with a flat surface.

Allowing light to pass through.

Permitting light to pass through, but not transparent.

Radio waves with the shortest wavelengths and the highest frequencies.

A photographic filter that absorbs light of certain colors.

The ability to see.

A repeated back-and-forth or up-and-down motion.

The bouncing back of a wave when it hits a surface through which it cannot pass.

Cornea, lens, retina, optic nerve