Articles

INVENTIONS AND DISCOVERIES ( PART 6 and 7 )

Fibre Optics, 1955. Inventor : Narinder Kapany, England.Film (musical), 1923. Inventor: Dr. Lee de Forest (USA) New York demonstration (March 13).Film (talking), 1926. Inventor:...

SCIENTIFIC INSTRUMENTS AND APPLIANCES P-Q-R

Photometer is an instrument for comparing the luminous intensity of the sources of light.Planimeter is a mechanical integrating instrument to measure area of a...

SCIENTIFIC INSTRUMENTS AND APPLIANCES I-K-L-M

Inclinometer is an instrument for measuring the angle of inclination that an aircraft makes with the horizontal.Incubator is a box designed to maintain a...

SCIENTIFIC INSTRUMENTS AND APPLIANCES G-H

Galvanometer is an instrument for measuring electric current.Gyroscope is a rapidly rotating heavy wheel that keeps the stability of its axis. It was invented...

SCIENTIFIC INSTRUMENTS AND APPLIANCES B-C

Barometer is used for measuring atmospheric pressure.Binocular is an optical instrument designed for magnified view of distant objects by both eyes simultaneously.Calorimeter is an...

SCIENTIFIC INSTRUMENTS AND APPLIANCES -A

Altimeter is a special type of aneroid barometer, used in measuring altitudes.Ammeter is an instrument to measure the strength of an electric current.Amplifier is...

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