Sve počinje mehaničkom vibracijom žice. Kada trznete žicu, ona počinje da osciluje, stvarajući mehanički talas. Frekvencija tog talasa zavisi od tri faktora: dužine žice, njene napetosti i mase po dužini. To je klasična fizika – ista pravila važe za violine, harfe ili klavire.

1. The Secrets of the
Electric Guitar
Luka Deretić 3-E3

2. The Physics of the Electric
Guitar
• Electric guitars make use of Faraday's
discovery.
• Pick-up coils, consisting of a small
magnet wound with wire, created an
interaction with a magnetic string or wire,
which in turn creates a current in the coil.
• This current can be transmitted to a
speaker and converted to sound by a
reciprocal process.

3. Discoveries
• First discovered by Michael
Faraday, electromagnetic induction
is the process of using magnetic
fields to produce voltage, and in a
complete circuit, a current.
• Leo Fender created the electric
guitar in 1940s.

4. Michael Faraday
• Michael Faraday (1791-1867)
discovered many of the fundamental
laws of physics and chemistry, despite
the fact that he had virtually no formal
education.
• The son of an English blacksmith, he
was apprenticed at the age of 14 to a
bookseller and bookbinder.
• He read every book on science in the
bookshop and attended lectures given at
the Royal Institution by various natural
philosophers, including Sir Humphry
Davy, the discoverer of several chemical
elements.

5. Michael Faraday
• Within a few years, Faraday began
to do original research on his own,
submitting two papers on chemistry
to the Royal Society in 1820.
• Faraday’s important discoveries
brought him considerable fame,
much to the discomfort of Davy,
who felt he should have shared the
credit for some of the advances.
• Davy preferred to regard Faraday
as a technical assistant and even
forced him to serve as a valet on an
extended tour of European research
centers.

6. Michael Faraday
• After Faraday discovered, in 1831, that a
changing magnetic field can induce a current, he
performed a series of experiments that showed
clearly that the induced EMF is equal to the rate
of change of magnetic flux.
• Also, generalizing from the patterns formed by
iron filings around magnets, he invented the
concepts of magnetic and electric field lines.

7. Michael Faraday
• Faraday made many other notable contributions.
• During the years 1831-1855 Faraday read before
the Royal Society a series of 30 papers that were
published in his three-volume ‘Experimental
Researches in Electricity’.

8. Michael Faraday
• An electric charge which is placed into the
electric field will feel a force equal to the
product of the electric field (a vector
quantity) and the value of the charge itself.