The most useful invention of mankind

1.

The most useful invention of mankind
Sundutov Olzhas, group

2.

Incandescent light
bulb

3.

4.

5.

6.

Why is this invention
useful?
It provided light during
It fueled It made lighting accessible to millions,
dark hours, boosting
productivity and
safety.
enhancing
quality
of
life.
Despite
its
industrial
low energy efficiency (only about 5%
growth and
of energy is converted to light, the
urbanization.
rest to heat), its simplicity and
universality paved the way for
modern lighting technologies.

7.

Thank you for attention!