Continuous spectrum

Definition

A continuous spectrum is a range of emitted radiation that contains all wavelengths within a specific range. It appears as a smooth gradient of colors without any gaps or lines.

5 Must Know Facts For Your Next Test

1. A continuous spectrum is produced by hot, dense objects such as stars and incandescent solids.
2. It contains all wavelengths of light, resulting in a complete rainbow when dispersed by a prism.
3. Unlike emission or absorption spectra, it does not have dark lines or bright lines at specific wavelengths.
4. The Sun produces a nearly continuous spectrum due to its hot, dense interior.
5. Continuous spectra are essential for understanding the thermal properties and compositions of astronomical objects.

Review Questions

• What type of objects typically produce a continuous spectrum?
• How can you differentiate a continuous spectrum from an emission spectrum?
• Why is the study of continuous spectra important in astronomy?

Related terms

Emission Spectrum: A spectrum that shows bright lines at specific wavelengths where atoms emit light.

Absorption Spectrum: A spectrum with dark lines or bands where light has been absorbed by atoms.

Blackbody Radiation: The theoretical emission of electromagnetic radiation from an idealized object that absorbs all incident radiation and re-emits it based on its temperature.