The discovery of electricity and

the invention of the bulb

Tales de Mileto (624-543 A.C)

Thomas Alva Edison (1847-1931)

The bulb of Edison

Thomas Edison light bulb, but he was the first to

create a practical and long-lasting light bulb.

In their attempts to improve the life of the light bulb, Edison tested

more than 6,000 types of plant material, along with any other

strand which occurred to him, such as tungsten, the most

common component of :

the modern strands

Finally, treated with a

thread of carbonized

cotton, which burned

for 15 hours