History of wireless communication ppt

“The world’s first wireless telephone conversation occurred in 1880 , when Alexander Graham Bell and Charles Sumner Tainter invented and patented the photophone, a telephone that conducted audio conversations wirelessly over modulated light beams (which are narrow projections of electromagnetic waves).”

wireless communications, System using radio-frequency, infrared, microwave, or other types of electromagnetic or acoustic waves in place of wires, cables, or fibre optics to transmit signals or data .

Jagadish Chandra Bose , the Indian scientist who pioneered wireless communication in the 1890s.