Barograph was invented by
1). Lucien Vidi
2). John Venn
3). Theophilus Van Kannel
4). Lewis Urry
Barometer was invented by
1). Evangelista Torricelli
2). Charles Xavier Thomas
3). Edward Teller
4). Gustav Tauschek
Magic Marker was invented by _______.
1). Adolphe Sax
2). Albert Bruce Sabin
3). Sidney Rosenthal
4). Hyman George Rickover
Kaleidoscope was invented by ________.
1). John Barber
2). Tim Berners-Lee
3). Alan Blumlein
4). David Brewster
Who Invented Ceiling fan?
1). Lloyd Groff Copeman
2). Bartolomeo Cristofori
3). Leonardo da Vinci
4). Philip Diehl