Light Bulb
Kuvakäsikirjoitus Kuvaus
Invention of the light bulb increased industry and comfort | A light bulb is a glass tube or bulb that emits light when an electric current passes through it. The light bulb's ability to illuminate once darkened factories and homes created a more productive and industrialized world.
Kuvakäsikirjoitus Teksti
- LIGHT BULB A light bulb is a glass tube or bulb that emits light when an electric current passes through it. The light bulb's ability to illuminate once darkened factories and homes created a more productive and industrialized world.
Yli 30 miljoonaa kuvakäsikirjoitusta luotu