Invention of bulb and its development.
Close-up of a lightbulb with a filament. Early Concepts and Discoveries (18th-19th Century).
Carbon Arc Lamp (1800s). Sir Humphry Davy demonstrated the first electric arc lamp in 1809, using two charcoal rods to create a bright light. This concept was later improved upon and used in various applications, but it still had limitations, including high energy consumption and rapid electrode consumption..
Close-up of a lightbulb with a filament. Incandescent Lamp Development (1800s).
Edison’s Innovations (Late 1800s). Edison’s team continued to refine the incandescent lamp, working on improving the lifespan of the filament and creating a vacuum inside the bulb to prevent oxidation. They eventually settled on using a carbonized cotton thread filament, which greatly increased the lifespan of the bulbs..
Graph on document with pen. Introduction of Tungsten Filament (Early 20th Century).
Dark floating bulbs with one lit up brightly. Advancements in Bulb Design (1900s).
Compact Fluorescent Lamps (CFLs) and Light Emitting Diodes (LEDs) (Late 20th Century – Present).