Thomas Edison, Michael Faraday, and Benjamin Franklin were influential inventors and scientists in the fields of electricity and electromagnetism. Edison developed many devices that shaped the modern world, Faraday's discoveries included electromagnetic induction, and Franklin was a polymath who made important contributions to physics through his study of electricity. Natural electrical phenomena can be observed in forms like lightning and static electricity, and the Earth's magnetic field is generated by circulating currents in its core. Certain materials also demonstrate piezoelectricity, or the generation of electric charges when subjected to pressure.

2. Thomas Edison
Thomas Alva Edison was an
American inventor and
businessman. He developed
many devices that greatly
influenced life around the world

3. Michael Faraday, FRS (22 September 1791 –
25 August 1867) was an English scientist who
contributed to the fields
of electromagnetism andelectrochemistry. His
main discoveries include that
of electromagnetic induction,

4. Benjamin Franklin (January 17, 1706 [O.S. January 6, 1705]] – April 17,
1790) was one of the Founding Fathers of the United States. A noted
polymath, Franklin was a leading author, printer, political
theorist, politician, postmaster, scientist, musician, inventor, satirist, civic
activist, statesman, and diplomat. As a scientist, he was a major figure in
the American Enlightenment and the history of physics for his discoveries
and theories regarding electricity. He invented the lightning rod, bifocals,
the Franklin stove, a carriage odometer, and the glass 'armonica'.[2] He
formed both the first public lending library in America and the first fire
department in Pennsylvania.[3]

5. Electricity is not a human invention, and may
be observed in several forms in nature, a
prominent manifestation of which is lightning.
Many interactions familiar at the macroscopic
level, such as touch, friction or chemical
bonding, are due to interactions between
electric fields on the atomic scale. TheEarth's
magnetic field is thought to arise from
a natural dynamo of circulating currents in the
planet's core.[72] Certain crystals, such
as quartz, or evensugar, generate a potential
difference across their faces when subjected to
external pressure.[73] This phenomenon is
known as piezoelectricity, from
the Greek piezein (πιέζειν), meaning to press,
and was discovered in 1880
by Pierre and Jacques Curie. The effect is
reciprocal, and when a piezoelectric material is
subjected to an electric field, a small change in
physical dimensions take place
Electrical phenomena in nature

6. The use of electricity gives a very convenient
way to transfer energy, and because of this it
has been adapted to a huge, and growing,
number of uses.[60] The invention of a
practical incandescent light bulb in the 1870s
led to lighting becoming one of the first
publicly available applications of electrical
power. Although electrification brought with it
its own dangers, replacing the naked flames of
gas lighting greatly reduced fire hazards within
homes and factories.[61] Public utilities were
set up in many cities targeting the burgeoning
market for electrical lighting.

7. A voltage applied to a human body causes an
electric current through the tissues, and
although the relationship is non-linear, the
greater the voltage, the greater the
current.[69] The threshold for perception varies
with the supply frequency and with the path of
the current, but is about 0.1 mA to 1 mA for
mains-frequency electricity, though a current
as low as a microamp can be detected as
an electrovibration effect under certain
conditions.[70] If the current is sufficiently high,
it will cause muscle contraction, fibrillation of
the heart, and tissue burns.[69] The lack of any
visible sign that a conductor is electrified
makes electricity a particular hazard. The pain
caused by an electric shock can be intense,
leading electricity at times to be employed as a
method of torture. Death caused by an electric
shock is referred to as electrocution.
Electrocution is still the means of judicial
execution in some jurisdictions, though its use
has become rarer in recent times.[71]