Who discovered the principles of the ballpoint pen.
a) László Bíró
b) John J. Loud
c) Lewis Waterman
d) Charles Parker
Answer: a) László Bíró
a) László Bíró
b) John J. Loud
c) Lewis Waterman
d) Charles Parker
Answer: a) László Bíró
a) Elias Howe
b) Isaac Singer
c) Barthélemy Thimonnier
d) Walter Hunt
Answer: a) Elias Howe
a) Nikola Tesla
b) Thomas Edison
c) Michael Faraday
d) James Clerk Maxwell
Answer: a) Nikola Tesla
a) Hans Geiger
b) Walther Müller
c) Ernest Rutherford
d) Marie Curie
Answer: a) Hans Geiger
a) Léon Foucault
b) Christiaan Huygens
c) Robert Hooke
d) Isaac Newton
Answer: a) Léon Foucault
a) William Crookes
b) J.J. Thomson
c) Ernest Rutherford
d) James Chadwick
Answer: b) J.J. Thomson
a) Dmitri Mendeleev
b) Marie Curie
c) Antoine Lavoisier
d) Robert Boyle
Answer: a) Dmitri Mendeleev
a) Charles Babbage
b) John Atanasoff
c) John Mauchly
d) All of the above
Answer: d) All of the above
a) Christopher Cockerell
b) Frank Whittle
c) Hans von Ohain
d) Charles Parsons
Answer: a) Christopher Cockerell
a) John Boyd Dunlop
b) Robert Thomson
c) Charles Goodyear
d) André Michelin
Answer: a) John Boyd Dunlop