Early Light Sources (Pre-1800s) -
Before electric light, people relied on candles, oil lamps, and gas lamps for illumination.

Incandescent Light Bulb (1800s) -
1.) 1802 – Humphry Davy created the first incandescent light using a platinum strip.

2.) 1841 – Frederick de Moleyns patented a bulb using platinum filaments in a vacuum.

3.) 1879 – Thomas Edison and Joseph Swan independently developed practical incandescent bulbs with carbon filaments.

Tungsten Filament Bulbs (Early 1900s) -
1.) 1904 – Scientists discovered that tungsten filaments last longer and produce brighter light.

2.) 1913 – Irving Langmuir improved efficiency with gas-filled bulbs.

Fluorescent Lighting (1920s-1940s) -
1.) 1927 – Edmund Germer developed the first practical fluorescent lamp.

2.) 1938 – General Electric introduced fluorescent lights for commercial use.

Halogen Bulbs (1950s) -
1.) 1959 – Halogen bulbs, which last longer and burn brighter, were introduced.

Light-Emitting Diodes (LEDs) (1960s-Present) -
1.) 1962 – Nick Holonyak invented the first practical LED.

Smart Lighting (2000s-Present) -
Modern smart bulbs can change colors, be controlled via apps, and integrate with home automation.