Inventions What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes? Charles Richter Giuseppe Mercalli Hiram Walker Joshua Rumble Charles Richter Giuseppe Mercalli Hiram Walker Joshua Rumble ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1800s 1880s 1890s 1900s 1800s 1880s 1890s 1900s ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the transistor invented? 1980s 1960s 1940s 1950s 1980s 1960s 1940s 1950s ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented the Seed Drill? Woodie Guthrie Thomas Hines Jethro Tull Arlo Guthrie Woodie Guthrie Thomas Hines Jethro Tull Arlo Guthrie ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the AEEE (now the IEEE) founded? 1850s 1950s 1880s 1930s 1850s 1950s 1880s 1930s ANSWER DOWNLOAD EXAMIANS APP
Inventions FROZEN FOOD - Who discovered the first practical method of freezing food? G. Findus R. Scott C. Birdsey F. Rozenosh G. Findus R. Scott C. Birdsey F. Rozenosh ANSWER DOWNLOAD EXAMIANS APP
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