Electricity was discovered in 1752 by Benjamin Franklin in Philadelphia through tying a metal key to a kite during a thunderstorm. The first application of electricity was electromagnetism, which was used to lift objects and in steam engines from 1839 by Joseph Henry. One of the earliest electric machines was built around 1700 by Francis Hauksbee, which used static electricity from a glass globe rubbed by hands rotating a pulley to power experiments in a vacuum chamber.

1. PROJECT 1- What a
machine!!
PART 1- Discovery of
electricity
By Elena Montoya Villegas, Emma Palazón
Anes, Julia Serrano García and Marina Vega
Ortega.

2. When was electricity
discovered?
● In 1752
● By Benjamin Franklin
● In Philadelphia
● By tying a metal key to the bottom of a kite in a
thunderstorm.

3. What was the first application for
electricity ?
-Was electromagnetism
-It was used to rise objects.Was done by steam engines, water
wheels, horses, or even people.
-1839 by Joseph Henry
-It was used until the end of 19th century.

5. First Electric Machine Built
OFrancis Hauksbee
OAround 1700
OSingle-barrelled pump
OUsed static electricity:
No wires.
Created when the glass globe became
charged.

6. Parts
The most important
parts are:
O Pulley
O Glass globe

7. Where did the electrical energy
consumed come from?
The machine became charged by:
● Rotating fastly a pulley
● Rubbing the glass globe with the hands
● Friction and mechanical energy transformations
● Device used for making experiments in a vacuum