The first thermionic valve was invented by
Who invented FM radio?
Who invented Radio?
Guglielmo Marconi, an Italian invetor invented Radio in 1890's.
The credit of inventing the television goes to
The credit of inventing the television goes to Philo Farnsworth. Electronic television was first successfully demonstrated in San Francisco on Sept. 7, 1927.
Which among the following is not correctly matched?
What did Sir William Herschel discover in 1800?
Sir William Herschel discovered Infra-red radiation in 1800.
In which country the hormone gibberellin was discovered?
The hormone gibberellin was discovered in the country Japan.
When was the voting machine invented?
Which is an invention that improved safety for railway passengers?
An invention that improved safety for railway passengers is Air brakes. With the use of air brakes using compressed air, become more effective by preventing many train accidents.
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