Light Bulbs By Erin Kremer 1800 Electric light invention. https://go.gale.com/ps https://www.worldbookonline.com 1802 Chemist demonstrated incandescent light bulb. https://go.gale.com/ps https://www.worldbookonline.com 1870 People made light bulb with cotton filament. https://go.gale.com/ps https://www.worldbookonline.com 1900 Improvement to the incandescent light bulb. https://go.gale.com/ps https://www.worldbookonline.com 1910 Companies made longer lasting filaments. https://go.gale.com/ps https://www.worldbookonline.com 1930 Incandescent light bulb. Can last 1000 hours. https://go.gale.com/ps https://www.worldbookonline.com 1938 Commercial fluorescent lamp introduced. https://go.gale.com/ps https://www.worldbookonline.com 1959 People awarded with patent for halogen lamp. https://go.gale.com/ps https://www.worldbookonline.com 1970 Concerned for energy because oil prices up. https://go.gale.com/ps https://www.worldbookonline.com 1970 Commercial fluorescent lamp invented. https://go.gale.com/ps https://www.worldbookonline.com
