A Projector is an optical instrument that is used to project a picture on a blank screen with the help of reflection or as done by a lantern. Basically, it enlarges and reflects an object. This is done with the help of lenses, prism and mirror that is used as a reflector. Apart from other …
The water thermometer has been around for centuries, but not many people are aware of the origins of this instrument. The following is a brief synopsis of the origin and development of the water thermometer. Origins The first water thermometer was created during the 16th century. In the year 1593, Galileo Galilei did the existing …
Cars have become an integral part of human life today. They are used everyday by millions of people around the globe. There were estimated 1,000,000,000 (1 billion) cars in 2010, whereas there were only 500 million in 1986. The numbers are continuously on the rise. The maximum number of cars today are found in India and …
A microphone is a device that converts acoustic power into electric power. Both the acoustic power and the electric power have similar wave characteristics that convert sound waves into electric voltages that eventually convert back into sound waves through speakers. Microphone were used with the first telephones, and then with radio transmitters soon after. Sir …
In order to understand the history of satellite television, you first have to go all the way back to the 1950's during the space race between the USA and Russia. The first satellite to orbit the earth was Sputnik, launched by the Russians in 1957. It was 6 years later until the first communications satellite …
Despite Al Gore’s claims to the contrary, the Internet was not originally invented by or created by a single person. The Internet as we know it today is a combination of a number of concepts that have ultimately been merged together to provide the service. Tim Berners-Lee (or Sir Timothy John Berners-Lee as officially known …
The invention of the telephone is credited to American Alexander Graham Bell and Thomas Watson in the mid-to-late 19th Century. Although Bell ultimately prevailed in the early signs of patent wars to come in the tech industry, there are a number of inventors who helped contributed technological and conceptual advancements that furthered telephone technology in …
No one person invented electricity, but its modern day use is the result of the work of inventors, scientists, and researchers who toiled over the subject for millennia. In order to fully understand electricity in our modern world, one has to first understand the pioneers who date back to as early as the ancient Greeks, …
The ENIAC is credited as being the first electronic general-purpose computer. The acronym stands for Electronic Numerical Integrator and Computer. Although earlier machines had many of the same qualities that the ENIAC exhibited, the ENIAC was the first Turing-complete digital computer capable of solving a range of computing questions. However, ENIAC was originally built as …
Erasing browser history clears the record of what web sites the user visited over a period of time. This can help to protect privacy by preventing others from monitoring what web sites the user has been visiting. Erasing Internet Explorer’s Browser History By default, Internet Explorer keeps browser history for 20 days. To erase browser …