Question

13.what was thomas edisons major invention? 14.what material did thomas edison have to use to make his light bulb work? 15.once edison invented the light bulb, what followed?

Explanation:

1. Thomas Edison is well - known for inventing the practical incandescent light bulb. It was a revolutionary invention that provided a reliable source of artificial light.
2. Edison used carbonized bamboo as the filament material in his successful light - bulb design. This material had properties that allowed it to glow when an electric current passed through it.
3. After inventing the light bulb, there were many developments. It led to the expansion of the electrical power industry, as infrastructure was needed to supply electricity to power the bulbs. It also spurred further innovation in lighting technology and had a major impact on daily life, enabling people to be more productive at night.

Answer:

1. The practical incandescent light bulb.
2. Carbonized bamboo.
3. Expansion of the electrical power industry and further innovation in lighting technology, and a major impact on daily life.