Electromagnetic Radiation and Astronomy Concepts

Front

Electromagnetic radiation

Back

The energy transferred through space by electromagnetic waves.

Front

Visible light

Back

Electromagnetic radiation that can be seen with the unaided eye.

Front

Wavelength

Back

The distance between two corresponding parts of a wave, such as the distance between two crests.

Front

Spectrum

Back

The range of wavelengths of electromagnetic waves.

Front

Telescope

Back

An optical instrument that forms enlarged images of distant objects.

Front

Optical telescope

Back

A telescope that uses lenses or mirrors to collect and focus visible light.

Front

Refracting telescope

Back

A telescope that uses convex lenses to gather and focus light.

Front

Reflecting telescope

Back

A telescope that uses a curved mirror to collect and focus light.

Front

Radio telescope

Back

A device used to detect radio waves from objects in space.

Front

Convex lens

Back

A lens that is thicker in the center than at the edges.