His work was inspired by the research of physicist Sir Jagadish Chandra Bose, who claimed to have discovered that playing certain kinds of music in the area where plants grew caused them to grow faster.
One of the first horn antennas was constructed in 1897 by Indian radio researcher Jagadish Chandra Bose in his pioneering experiments with microwaves.
British physicist Oliver Lodge demonstrated the existence of Maxwell's waves transmitted along wires in 1887–88.
Around the turn of the 20th century they were quite common as detectors in radios, used in a device called a "cat's whisker" developed by Jagadish Chandra Bose and others.
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Das was also a cousin of two prominent Bengali educationists and feminists - the sisters Sarala Roy, founder of the Gokhale Memorial Girls' College in Calcutta and a prominent person in Bengal's social affairs, and Lady Abala Bose, wife of scientist Jagadish Chandra Bose and also a prominent person of her time.