Inventors & their inventions

New inventions are appearing every day to make our lives easier, longer, warmer, speedier & so on. But only a few inventors design a new machine or product that becomes so well-known that the invention, named after its creator, becomes a household word. Here are some famous inventors & the inventions they have made.

EDISON THOMAS ALVA

Thomas Alva Edison (1847-1931) was an American inventor (also known as the Wizard of Menlo Park) whose many inventions revolutionized the world. His work includes improving the incandescent electric light bulb and inventing the phonograph, the phonograph record, the carbon telephone transmitter, and the motion-picture projector.

Edison's first job was as a telegraph operator, and in the course of his duties, he redesigned the stock-ticker machine. The Edison Universal Stock Printer gave him the capital ($40, 000) to set up a laboratory in Menlo Park, New Jersey, to invent full-time (with many employees).

Edison experimented with thousands of different light bulb filaments to find just the right materials to glow well, be long-lasting, and be inexpensive. In 1879, Edison discovered that a carbon filament in an oxygen-free bulb glowed but did not burn up for quite a while. This incandescent bulb revolutionized the world.

ALFRED NOBEL Alfred Bernhard Nobel (1833-1896) was a Swedish inventor and industrialist. Nobel invented many powerful and relatively safe explosives and explosive devices, including the " Nobel patent detonator" (it detonated nitroglycerin using a strong electrical shock instead of heat, 1863), dynamite (1867), blasting gelatin (guncotton plus nitroglycerin, 1875), and almost smokeless blasting powder (1887). Nobel also made inventions in the fields of electrochemistry, optics, biology, and physiology. Nobel left much of his fortune to award prizes (the Nobel prizes) each year to people who made advancements in Physics, Chemistry, Physiology/Medicine, Literature, and Peace.

RUDOLF DIESEL (1858 - 1913) Born in Paris of Bavarian parents, Diesel studied at Munich Polytechnic. He began his career as a refrigerator engineer. For ten years he worked on various heat engines, including a solar-powered air engine. Diesel's ideas for an engine where the combustion would be carried out within the cylinder were published in 1893, one year after he applied for his first patent.

The diesel engines of today are refined and improved versions of Rudolf Diesel's original concept. They are often used in submarines, ships, locomotives, passenger cars, large trucks and in electric generating plants.

GALILEO GALILEI (1564-1642) was an Italian mathematician, astronomer, and physicist. Galileo found that the speed at which bodies fall does not depend on their weight and did extensive experimentation with pendulums.

In 1593 Galileo invented the thermometer.

In 1609, Galileo was the first person to use a telescope to observe the skies (after hearing about Hans Lippershey's newly-invented telescope). Galileo discovered the rings of Saturn (1610), was the first person to see the four major moons of Jupiter (1610), observed the phases of Venus, studied sunspots, and discovered many other important phenomena.

In 1633, Galileo, a sick 70-year-old man, was ordered to go to Rome to explain his ideas to the Inquisition. As a result Galileo had to spend the rest of his life under home arrest. But he did not give up, his last words were: ‘’But it does move’’.

Samuel Finley Breese Morse (1791-1872) was an American inventor and painter. After a successful career painting in oils (first painting historical scenes and then portraits), Morse built the first American telegraph around 1835 (the telegraph was also being developed independently in Europe).

A telegraph sends electrical signals over a long distance, through wires. In 1830, Joseph Henry (1797-1878) made the first long-distance telegraphic device - he sent an electronic current for over a mile on wire that activated an electromagnet, causing a bell to ring.

Morse patented a working telegraph machine in 1837, with help from his business partners Leonard Gale and Alfred Vail. Morse used a dots-and-spaces code for the letters of the alphabet and the numbers (Morse Code was later improved to use dots, dashes and spaces: for example E is dot, T is dash, A is dot-dash, N is dash-dot, O is dash-dash-dash, I is dot-dot, S is dot-dot-dot, etc.). By 1838, Morse could send 10 words per minute. Congress provided funds for building a telegraph line between Washington D.C. and Baltimore, Maryland, in 1843. Morse sent the first telegraphic message (from Washington D.C. to Baltimore) on May 24, 1844; the message was: " What hath God wrought? " The telegraph revolutionized long-distance communications.

SAMUEL COLT (1814 –1862), an American gunsmith. He designed a pistol, patented in 1836, with a revolving barrel that could fire six bullets, one after the other. The Colt was the first of its kind. Many “six-shooters” came later.

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