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How to convert analog to digital?

Conversion of analog video into the digital set-up happens to be a simple process consisting of two steps. The doer, at the beginning, remains in need of recording own video into the very digital tape. After that, there is the growing need to put aside the info from digital tape into the computer due to [...]



What is 3D imaging?

Before discussing about 3D imaging let’s talk briefly about its meaning. 3D is an abbreviation used for three dimensional i.e a thing object vision or illusion that is visible in its three dimensions (length, breadth, and height or depth). Even we also move in our surroundings in three dimensions, without knowing it consciously.
When we [...]



Who invented telephone?

If you are curious to know who invented the first voice communicating device otherwise known as telephone, then it’s none other than the famous Scottish inventor, Alexander Graham Bell. He is given credit for inventing the first working telephone, which could actually transmit speech electrically. During the time when Bell was working on his [...]



Who invented radio?

If you are probably wondering who invented radio then the credit can be given not only to a single individual but to several researchers. So when did this all start? The evolution of radio began during the early 1800s. Just like many other great inventions, even the invention of radio is highly disputed. There have [...]



Who invented video games?

Ralph H. Baer, a well renowned video game inventor, is considered as ‘The Father of video games’. During the year 1951, he came up with the idea of including a video game in television set but his idea was not acknowledged by his seniors. He is the mastermind behind the creation and development [...]



Who invented the steam engine?

The credit for inventing the steam engine cannot be given only to a single inventor as several contributions were made centuries ago. Dating back to the first century A.D, the idea of steam engine was first conceived by a Greek scientist and mathematician called Hero of Alexandria. Credit is given to this great mathematician for [...]



Who invented iPod?

iPod was invented by a team of designers at Apple. The original idea of iPod came from a 23 year old Englishman, Kane Kramer, in the year 1979. He held a patent for the same till he was unable to renew his patent and it expired. Kane called his prototype the IXI; it did not [...]



Who invented the television?

In 1924, John Logie Baird, a Scot, was the first to transmit the television picture of moving objects. The question who invented the television is a highly debatable one. The final product that we see today has been assembled by the parts invented by several different individuals.
The Gist
There are two schools of thoughts, one which [...]



How a refrigerator works?

Refrigerator is found in almost everybody’s kitchen. It is used to store the leftover food instead of throwing it and helps to keep the things cold.
Air conditioning and refrigeration work on the same idea. It does not cool but removes the heat so that food could be kept for longer period. The gas is compressed [...]



How a cell phone works?

Today almost everyone is using cell phones but do we know how it works?
Cell phone is basically the combination of two technologies or inventions. One is the telephone and other is the radio. Telephone was the invention of Graham Bell in 1876 and radio by Nikolai Tesla in 1880’s which made a way for the [...]



How fast do airplanes go?

Speed varies from plane to plane but average speed of a plane is five hundred and eighty miles per hour.
Jet airlines can fly at the speed of 600 mph. And some others can go at the 2000 mph. It depends from aircraft to aircraft. Small jet planes can travel faster than the large passenger [...]



How gps works?

Gps means global positioning system. A small gadget having gps receiver tells you about your current location or where you are standing on the earth at that particular moment. Earlier people used landmarks, maps etc to save themselves from getting lost but now gps is the easiest way to know about your exact position.
Generally when [...]



How bluetooth works?

Any electronic device like telephone, computer and entertainment system is made up of many different parts. If we want to create communication among these devices than we have many options like wires, radio signals, light beam, many connectors, protocols etc. and many more are coming up. These days one popular and interesting way of connecting [...]



When was electricity invented?

George Carlin says “electricity is just organized lightening” or we can say that electricity always existed it was not invented instead it was discovered. It has become a very important part of today’s life. Most of the things and appliances we use run on electricity.
The credit of discovery of electricity is however given to Benjamin [...]



When was the first television made?

A box by which we see images and hear sounds is called television. Let us know about its invention and development.
In 1862 Abbe Giovanna Caselli invented pantelgraph which sends the still images with wires. May and Smith the other scientists in 1873 started their experiments with selenium and light which shows that they can convert [...]



How does the telephone work?

The easiest way to contact a person is to pick up the phone, dial a number and you can have the conversation with that person even if the person is many miles away or anywhere on the earth. Nearly 100 years back you have to write a message or letter which reaches in days but [...]



What are airplanes made of?

Mostly all the airplanes are made up of the light and strong metal because the plane has to fly in the air and it is always tried that the weight of the plane’s body should be minimum. Its frame is mostly made up of aluminum which is a light metal. 747-8 was the last aircraft [...]



How do smoke alarms work?

It takes nearly four minutes for a small flame to turn in a big fire. There should be smoke alarms in every house and office so that the first whiff of smoke can be detected to save the life of people.
Smoke detectors are of mainly two types one is the ionized detector and other is [...]



How does a laser printer works?

Laser printer works on a principle called the static electricity. A charge is built up on any object that can be a balloon, your body etc. we know that atom with opposite charge attracts each other and the objects bind with the others having atoms of opposite static electricity.
There is a drum present in the [...]



How do speed traps work?

Speed trap is a device used by the officers to measure the speed of your vehicle in a particular area where speed limit is enforced. Radar or laser is used to measure the speed while speed trap is a stationary thing in itself.
The element of stealth is used in the working of a speed trap [...]



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