Inventions Who invented Electric Generator? Sir Alexander Graham Bell Alfred B. Nobel Michael Faraday Thomas Alva Edison Sir Alexander Graham Bell Alfred B. Nobel Michael Faraday Thomas Alva Edison ANSWER DOWNLOAD EXAMIANS APP
Inventions What inspired reflecting road lights to be invented? Car door reflecting mirrors Sun light on steel posts on road sides The light a cat's eyes gave off on a fence The sun light on the windshield Car door reflecting mirrors Sun light on steel posts on road sides The light a cat's eyes gave off on a fence The sun light on the windshield ANSWER DOWNLOAD EXAMIANS APP
Inventions What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes? Joshua Rumble Charles Richter Giuseppe Mercalli Hiram Walker Joshua Rumble Charles Richter Giuseppe Mercalli Hiram Walker ANSWER DOWNLOAD EXAMIANS APP
Inventions When were bar code scanners invented? 1960s 1950s 1940s 1970s 1960s 1950s 1940s 1970s ANSWER DOWNLOAD EXAMIANS APP
Inventions What charge card, developed in 1950, was the first to be accepted nationally in the US? Discover Diner's Club Visa MasterCharge Discover Diner's Club Visa MasterCharge ANSWER DOWNLOAD EXAMIANS APP
Inventions For what does the world owe Almon Strowger a debt of gratitude? Vending Machines Traffic Lights Parking Meters Automatic Telephone Exchanges Vending Machines Traffic Lights Parking Meters Automatic Telephone Exchanges ANSWER DOWNLOAD EXAMIANS APP
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