ENERGY KIDS

Smart Inventions


Dear kids, the list of the top smart inventions is upto dated regularly. If you want to read about any specific invention, or you need more information about the alreday listed in thos section, please let us know.

 

wheel           
Wheel inventionThe wheel is probably the most important mechanical invention of all time. The invention of the wheel is believed to have occurred in Mesopotamia, in the Middle East, anywhere from the fifth to the third millennium B.C.

 

The first wheels would have been used to spin clay for potters to form into other useful goods.

Early wheels were simple wooden disks with a hole for the axle.
Used in machines and technology ever since, the wheel has allowed the world to reach the level of technology it enjoys in the 21st century.

 

 

electric light (light bulb)
Most of the people think that the inventor of the light bulb was Thomas Edison in 1879. Actually the story of the lightbulb started almost seventy years earlier.

Electric bulb inventionThe first electric light was made in 1800 by Humphry Davy (english scientist). He experimented with electricity and invented an electric battery. When he connected wires to his battery and a piece of carbon, the carbon glowed, producing light. This was called an electric arc.

In 1820, Warren De la Rue made the first known attempt to produce an incandescent light bulb. He enclosed a platinum coil in an evacuated tube and passed an electric current through it.

In 1879 Edison and Swan independently developed the first incandescent lamp that lasted a practical length of time (13.5 hours). Their separate designs were based on a carbon fiber filament derived from cotton. The next logical stage of development was focused on extending the practical life of the bulb.

Edison was the first that developed a bulb with practical life lasted up to 1200 hours.



steam engine
A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The idea of using boiling water to produce mechanical motion has a long history, going back about 2,000 years.

Steam engine inventionThe first steam engine was invented by Thomas Savery (english military engineer) in 1698. He patented the first crude steam engine, based on Denis Papin's Digester or pressure cooker of 1679.

The first commercially successful engine did not appear until around 1712.

The enginee were relatively inefficient, and in most cases was only used for pumping water.
Years latter, around 1800, Richard Trevithick introduced engines using high-pressure steam. These were much more powerful than previous engines and could be made small enough for transport applications. Steam engines remained the dominant source of power well into the 20th century, when the advances in the design of electric motors and internal combustion engines were discovered.



telephone
Phone inventionThe story of the phone begins with a non-electrical string telephone or "lover's telephone" that has been known for centuries, comprising two diaphragms connected by a taut string or wire. Sound waves are carried as mechanical vibrations along the string or wire from one diaphragm to the other. The classic example is the tin can telephone, a children's toy made by connecting the two ends of a string to the bottoms of two metal cans, paper cups or similar items.

The father of the phone we know is Alexandel Bell. The true story sais that in the 1870s, 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, so after the famous legal battle ... Bell won.



telegraph
The telegraph is any system that allows the transmission of encoded information by signal across a distance.

Telegraph inventionThe earliest forms of telegraphy were smoke, fire or drum signals.

In the late 18th century optical (non electric) telegraphs were invented by Claude Chappe in France and George Murray in England – the semaphore, based on visible transmission encoded by different positions of pivoted arms located on high towers, but this slow and ineffective system couldn't work at night.

The telegraph was developed independently in the United States by Samuel Morse and his assistant, Alfred Vail, in 1837. The person who invented the Morse code was actually Vail.
The first message was transmitted on 27 May, 1844. The message was "What has God wrought?". The first telegraph in Croatia became operative in 1850.



printing press
A printing press is a device for applying pressure to an inked surface resting upon a print medium (such as paper or cloth), thereby transferring the ink, something not used in earlier methods of printing. Typically used for texts.

Printing press inventionThe mechanical systems involved were first assembled in the Holy Roman Empire by the German Johannes Gutenberg around 1440, based on existing screw presses.

Gutenberg was the first to convert the concept for printing uses. Gutenberg's use of mechanical presses along with other innovations made printing a proto-industrial process with a far greater output compared to manuscripts made by copyists.
 




Arc transmitter
Wireless Telephony and Telegraphy
Arc transmitter Arc transmitter was invented by Valdemar Poulsen in 1902.
It was used to convert direct current in to radio frequency alternating current.

It was the first technology to transmit sound amplitude modulation by radio.

Arc transmitter principle of work is based on using carbon arc lamp to make a resonant circuit that produce audible range frequencies (in the range 20 to 20000 Hz).

The principle of a carbon arc lamp is that electricity likely to jump from one piece of carbon to another. This process create an arc of electricity in mid-air.

Photo source: ptt-museum.dk