DESIGN AND CONSTRUCTION OF A METRE BRIDGE

BACKGROUND HISTORY OF WHEATSTONE BRIDGE: The study of electricity is an important aspect of physics because electricity plays a key role in the modern world.  The working of most modern appliances such as radio, television, computers and calculators, refrigerator, air conditioners, sound systems and electric fan is possible as a result of electricity.

There are three basic quantities, which must be clearly understood before we can proceed with the subject of electricity.  There are electric current, potential difference and electric resistance.  One needs to have the knowledge of circuit board and work with a variety of circuit including voltage dividers, the wheatstone bridge.

Sir Charles Wheatstone (1802 – 1873) was a British Scientist and inventor of telegraph systems.  He began as a musical instrument maker in London, but his scientific was to select the best result, which resulted in an outstanding paper on acoustic he presented to the Royal Society in (1833 – 1834) he became a professor of Physics at Kings College London, and distinguished himself in research in electrical science.

With William Forhergill cook, he invented major component of England’s first telegraph system.  He also intended scientific instrument and a self-excited electrical generator (the dynamic) about the same time as Werner Von siemens.  His keen intellect was demonstrated by his ability to deciphjer hieroglyphies.  In 1868, he was knighted.

Wheatstone bridge, as it is common known was first described by Sott Chirstle in 1833 but came into use about 1843.  when wheatstone Charles called attention to Christle’s work, since then wheatstone bridge has been the name applied to this instrument.