Vertex lightbulb

The electric lightbulb replaced previously used light sources that were based on burning fuels in different states of matter (candles, kerosene or gas lamps). Electric light sources proved to be more convenient in everyday use, which drove the enormous commercial success of the lightbulb and its ubiquity in private homes and public spaces. Each lightbulb consists of a filament (i.e. a thread glowing under the influence of electricity flowing through it), a base connected to the power source, and a glass bulb that ensures the appropriate environment for the filament inside to work. The patent for the lightbulb belonged to the American inventor and entrepreneur Thomas Alva Edison. The item presented here was produced in Vertex Elektrowerke in Germany, from 1921 a part of the Osram group, the manufacturer of different types of electric light sources. Manufacturer: Vertex Elektrowerke Ges.m.b.H., 1930s Inv. No.: MIM1220/IV-33 Model prepared on the basis of photogrammetric measurements. Licence: CC BY-NC-SA