Inventions What Benjamin Franklin invented? Barometer Bifocal spectacles Hygrometer Radio Barometer Bifocal spectacles Hygrometer Radio ANSWER DOWNLOAD EXAMIANS APP
Inventions What Thomas Davenport invented? Chesterfield Screw propellor Sleeping (railway) car Electric streetcar Chesterfield Screw propellor Sleeping (railway) car Electric streetcar ANSWER DOWNLOAD EXAMIANS APP
Inventions What type of system did Paul Nipkow, John Baird, and Charles Jenkins all invent? Early Warning Television Telephone Electricity Early Warning Television Telephone Electricity ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the first elevator built? 1785 1739 1760 1743 1785 1739 1760 1743 ANSWER DOWNLOAD EXAMIANS APP
Inventions What J. B. Dunlop invented? Pneumatic rubber tire Rubber boot Automobile wheel rim Model airplanes Pneumatic rubber tire Rubber boot Automobile wheel rim Model airplanes ANSWER DOWNLOAD EXAMIANS APP
Inventions What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes? Charles Richter Hiram Walker Giuseppe Mercalli Joshua Rumble Charles Richter Hiram Walker Giuseppe Mercalli Joshua Rumble ANSWER DOWNLOAD EXAMIANS APP
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