This presentation is about, why does an electric bulb gives less light than a tube light?
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
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
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
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
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 a business card.
Nuclear reactors release energy by controlled nuclear fission chain reaction.
Radar is the most necessary instrument of modern age. Radar is of two types.These are continuous high frequency radio wave and vibrational radio wave.
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
According to The Robot Institute of America (1979) : "A reprogrammable, multifunctional manipulator designed to move materials, parts, tools, or specialized devices through various programmed motions for the performance of a variety of tasks."
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 patented his telephone first
The first all-electronic TV programming was launched by the BBC from Alexandra Palace in London in 1936. Unlike the mechanical systems, this approach was the direct precursor to today's all-electronic approach to transmitting TV pictures
In modern times, we depend on e-mail and on the World Wide Web. We have access to these resources at home and at the offices, and we would like to use these resources while traveling. This is the goal that "wireless data" hopes to accomplish