Famous Foreign Physicists

Question 1

first expressed the direction of current on a conductor and direction of the lines of force

Answer 1

Andrei Marie Ampere (French)

Question 2

Discovered the relationship between buoyancy and displacement of liquids

Answer 2

Archimedes (Greek)

Question 3

discovered the radioactivity in 1896

Answer 3

Antoine Henri Becquerel (French)

Question 4

invented the telephone

Answer 4

Alexander Graham Bell

Question 5

Formulated the Boyle’s law which states that the volume of the a given mass of gas at a constant temperature varies inversely with the pressure exerted on it

Answer 5

Robert Boyle (Irish)

Question 6

incented the Bunsen burner, spectroscope and photometer

Answer 6

Robert Bunsen (German)

Question 7

He found that the volume of the mass of a gas at constant pressure is proportional to its absolute temperature and invented the hydrogen balloon

Answer 7

Jacques Charles (French)

Question 8

first to succeed in isolating rom many tons of pitch-blende, a new substance which she named radium, this element has a radioactivity 4 millions times as active as pure uranium

Answer 8

Marie Sklodowska Curie (Polish)

Question 9

invented the phonograph, incandescent electric lamp, multiplex telegraphy, telephone carbon transmitter, moving picture camera and Edison storage cell

Answer 9

Thomas Alva Edison (American)

Question 10

designed the thermometer scale which now bears his name and made the first mercury thermometer

Answer 10

Gabriel Fahrenheit (German)

Question 11

discovered the electromagnetic induction, or the transformation of mechanical energy directly into electrical energy, which resulted in the development of first electric generator

also invented the first dynamo

and discovered the laws of electrolysis

Answer 11

Michael Faraday (English)

Question 12

he demonstrated his famous kite experiment, that lighting and electricity were the same

also invented lighting rod

gave names of positive and negative to the two parts of electric charges

Answer 12

Benjamin Franklin

Question 13

studied the solar spectrum with spectroscope and found thta it is not a continuous band of colors but many dark vertical lines

Answer 13

Joseph Fraunhofer

Question 14

knows as the father of modern science

discovered the laws of freely falling bodies and laws of pendulum

made the first thermometer and astronomical telescope

Answer 14

Galilei Galileo (Italian)

Question 15

Invented the air pump and the most interesting and famous experiment Magdeburg hemispheres which proved that air exerts pressure

Answer 15

Otto von Guericke (German)

Question 16

established the law of conservation of energy, and first scientist to discover with the use of resonators the cause of differences in musical tones which are called quality

Answer 16

Herman von Helholtz

Question 17

invented the electromagnet and discovered the laws of electromagnetic induction

also invened first electric motor

Answer 17

Joseph Henry (American)

Question 18

investigated and discovered the existence of electromagnetic or radio waves now used in radio communication

Answer 18

Heinrich Hertz (German)

Question 19

Formulated Hooke’s law which states the relation between stress and strain on the body

Answer 19

Robert Hooke (English)

Question 20

invented the pendulum clock, worked out the wave theory of light which he explained refraction and discovered the polarization of light

Answer 20

Christian Huygens (Dutch)

Question 21

helped establish the law of conservation of energy and determined the mechanical equivalent of heat

Answer 21

James Prescott Joule

Question 22

invented the commercial wireless telegraphy

Answer 22

Guglielmo Marconi

Question 23

developed the kinetic theory of gases, mechanical theory of heat and electromagnetic theory of light in a mathematical basis

Answer 23

James Maxwell

Question 24

experimented at Mt. Wilson Observatory Cal., and found the speed of light in vacou to be 299, 796 kms per sec

Answer 24

Albert K. Michelson

Question 25

invented the electromagnetic recording telegraph and morse code

Answer 25

Samuel F. B. Morse

Question 26

author of the Law of universal gravitation; Three Laws of Motion

Answer 26

Sir Isaac Newton

Question 27

discovered the presence of magnetic field around a conductor through which a current flows

Answer 27

Hans Oersted

Question 28

investigated the factors which affect electrical resistance in a conductor and unit of resistance is named after him

Answer 28

George Simon Ohm

Question 29

discovered superconductivity

Answer 29

H. Kamerlingh Onnes

Question 30

proved that atmospheric pressure varies with altitude

Answer 30

Blaise Pascal

Question 31

first one to measure the velocity of light by studying the eclipses of Jupiter’s satellites

Answer 31

Olaus Roemer

Question 32

discovered the new and visible radiation known as x-rays while experimenting with a vacuum tube

Answer 32

Wilhem Conrad Roentgen

Question 33

invented the electrometer, advanced the kinetic theory of heat and the absolute scale of temp is named after him

Answer 33

Sir Williams Thomson

Question 34

inventor of electric batter, electroscope, electric condenser and electrophorus

developed the new cell called voltaic cell

the volt, unit of electromotive force is named under him

Answer 34

Alessandro Volta

Question 35

invented the mercury barometer which he proved the existence of atmospheric pressure

Answer 35

Evangelista Torricelli

Question 36

credited with the invention of the main features of modern steam engine

watt, unit of electric power is named under him

Answer 36

James Watt

Question 37

two brothers who invented the airplane

Answer 37

Orville and Wilbur Wright