Inventions and Discoveries

101. Who discovered X-rays?
a) Wilhelm Conrad Röntgen
b) Marie Curie
c) Ernest Rutherford
d) Robert Boyle

102. Who invented the first airplane?
a) Wilbur and Orville Wright
b) Leonardo da Vinci
c) Samuel Langley
d) Gustave Whitehead

103. Who invented the first practical television?
a) John Logie Baird
b) Philo Farnsworth
c) Vladimir Zworykin
d) Charles Francis Jenkins

104. Who discovered the principle of radioactivity?
a) Marie Curie
b) Ernest Rutherford
c) Antoine Becquerel
d) William Roentgen

105. Who invented the first practical camera?
a) George Eastman
b) Louis Daguerre
c) William Henry Fox Talbot
d) Eadweard Muybridge