David Warren (Aircraft 'black box' recorders)
Groote Eylandt
Samuel Morse (Telegraphy and Morse code)
Charlestown, MA
Rudolf Diesel (Diesel engine)
Paris
Robert Boyle (Chemistry and scientific method)
Lismore
Nikola Tesla (Alternating current supply)
Smiljan
Anders Celsius (Astronomy, Centigrade scale)
Uppsala
László Bíró (Ballpoint pen)
Budapest
Niels Bohr (Atomic structure and quantum theory)
Copenhagen
Alexander Graham Bell (First practical telephone)
Edinburgh
Marie Curie (Discovery of Polonium and Radium)
Warsaw
Karl Benz (First practical modern automobile)
Mühlburg
Juan de la Cierva (Autogyro, rotor-wing dynamics)
Murcia
Linus Torvalds (Linux operating system)
Helsinki
Alessandro Volta (Electric battery)
Como
Antoni van Leeuwenhoek (Microscopy)
Delft
Hidetsugu Yagi ('Yagi' radio antennae)
Osaka
Igor Sikorsky (Helicopters and fixed-wing aircraft)
Kyiv
Ibn al-Haytham (Mathematics and astronomy)
Basra
Alois Senefelder (Lithographic printing)
Prague
Sergey Ilyushin (Aircraft design)
Dilyalevo
Australia
Croatia
Czech Republic
Denmark
Finland
France
Germany
Hungary
Iraq
Ireland
Italy
Japan
Netherlands
Poland
Russia
Spain
Sweden
UK
Ukraine
USA
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