In which decade was the telegraph invented?
Answer: B
It was invented in the 1840s.
Samuel Morse and Alfred Vail demonstrated the electric telegraph in 1844, sending 'What hath God wrought' from Washington to Baltimore. Cooke and Wheatstone had patented a version in England in 1837.
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What invention caused many deaths while testing it?
Answer: D
The parachute cost many lives in testing.
Early inventors jumped from towers and balloons to prove their designs. Franz Reichelt, a tailor, died in 1912 leaping from the Eiffel Tower in a wearable parachute of his own making, an attempt that was filmed.
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Who designed the city Chandigarh?
Answer: D
Le Corbusier designed it.
The Swiss-French architect took over the plan in 1951 after Matthew Nowicki's death, laid the city out in numbered sectors on a grid, and designed the Capitol Complex - the High Court, Secretariat and Assembly - himself.
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Radium was discovered by
Answer: C
Marie and Pierre Curie discovered radium.
They isolated it from pitchblende in 1898, along with polonium, processing tonnes of ore for a fraction of a gram. Marie received the 1911 Nobel Prize in Chemistry for it.
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What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?
Answer: C
Television is credited to him.
Vladimir Zworykin invented the iconoscope camera tube in 1923 and the kinescope picture tube in 1929, which together made all-electronic television possible. He worked at Westinghouse and then RCA.
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Who Invented Microwave Oven ?
Answer: C
Percy Spencer invented it.
An engineer at Raytheon, he noticed in 1945 that a chocolate bar in his pocket had melted while he stood near an active magnetron. He tried popcorn next, then an egg, which exploded. Raytheon sold the first Radarange in 1947.
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Who invented silicones?
Answer: B
Professor F.S. Kipping invented them.
Frederic Stanley Kipping worked on organosilicon compounds from 1899 and coined the word silicone. He thought them of no practical use; they became the basis of sealants, lubricants and medical implants.
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Which group invented and developed the early Internet?
Answer: B
The United States government did.
ARPANET was funded by the Advanced Research Projects Agency of the Department of Defense, and its first link was made in October 1969. The TCP/IP protocols that made it an internet were developed under the same funding in the 1970s.
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When was the first lawn mower invented?
Answer: A
The first lawn mower was invented in 1830.
Edwin Budding, an engineer in a Gloucestershire cloth mill, adapted the rotary cutter used to trim the nap on cloth. Before it, grass was cut with a scythe or grazed by sheep.
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The type of resistor whose electrical resistance falls as its temperature rises was invented by
Answer: A
Samuel Ruben invented it.
The thermistor's resistance falls sharply as it warms, which makes it a sensitive temperature sensor and a means of limiting the surge of current when equipment is switched on. Ruben also invented the mercury battery.
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