In the 1870s, two inventors Elisha Gray and Alexander Graham Bell both independently designed devices that could transmit speech electrically (the telephone). Both men rushed their respective designs to the patent office within hours of each other, Alexander Graham Bell Read More …
A robot can be defined as a programmable, self-controlled device consisting of electronic, electrical, or mechanical units. More generally, it is a machine that functions in place of a living agent By: Ranjit Kumar Created By School Address Email Class Read More …
Nuclear reactors release energy by controlled nuclear fission chain reaction. By: Ashok Kumar Created By School Address Email Class Unknown Govt. Boy’s High School Bhuwaneswar, Orissa 9th
Nuclear reactors release energy by controlled nuclear fission chain reaction. By: Ashok Kumar Created By School Address Email Class Unknown Govt. Boy’s High School Bhuwaneswar, Orissa 9th
The ‘first’ generation of television sets were not entirely electronic. The display (TV screen) had a small motor with a spinning disc and a neon lamp, which worked together to give a blurry reddish-orange picture about half the size of Read More …
Traditionally, cellular phones remained out of the hands of most consumers due to their high cost. As a result, cell phone carriers have invested time and resources into finding ways to give the systems higher capacity and thus lower cost Read More …
Portable cellular telephones have become invaluable for people who need to stay in touch while on the moves cellular telephone systems combine radio and television technology with computer systems By: Ranjit Kumar Created By School Address Email Class B.Anand Madras Read More …
The CD player has the job of finding and reading the data stored as bumps on the CD. Considering how small the bumps are, the CD player is an exceptionally precise piece of equipment By: Dev! Created By School Address Read More …
George Eastman invented the camera in the 1880’s. He invented the color film on April 15, 1935. Also, he invented black and white film in the 1880’s.Eastman invented the camera so people could remember the things they do By: Ranjit Read More …
This presentation is about, why does an electric bulb gives less light than a tube light? By: Ashok Kumar Created By School Address Email Class Sukanti Majhi, Manaswini Padhi Govt. Girls High School Koraput, Orissa 8th