filament lamp

carbon filament lamps

filament lamp, variety of incandescent lamp (q.v.) in which the light source is a fine electrical conductor heated by the passage of current.

This article was most recently revised and updated by Amy Tikkanen.

Citation Information

Article Title: filament lamp

Website Name: Encyclopaedia Britannica

Publisher: Encyclopaedia Britannica, Inc.

Date Published: 13 September 2025

Access Date: December 26, 2025