No one knows for sure when the first chocolate bar appeared or even who made it, but an important event occurred in 1828. The Van Houten press was invented, which extracted cocoa butter from the bean – the same press that brought the Cadbury Brothers success with Cocoa Essence.

1.1 Historical Overview. The first noble gas to be discovered was helium (Lockyer, 1869). Spectroscopic investigations of the Sun’s chromosphere during a solar eclipse in India in 1868 revealed a previously unobserved line, close in wavelength to the D1 and D2 Fraunhofer lines of sodium.

The basis for vaccination began in 1796 when an English doctor named Edward Jenner observed that milkmaids who had gotten cowpox did not show any symptoms of smallpox after variolation.

December 3, 1795: Rowland Hill, who invented the first adhesive postage stamp in 1840, was born.

German-American game developer Ralph Baer shows the prototype of the first games console which was invented by him during a press conference on the Games Convention Online in Leipzig, Germany in 2009. Baer died on Saturday

The discovery of the use of chloroform as an anæsthetic, made by Sir James Young Simpson in Edinburgh in 1847, was marked by a graduation ceremony at the University at which the honorary degree of LL.

Joseph F. Glidden was born in New York on Jan. 18, 1812. He invented barbed wire in 1873 and was granted the patent on Nov. 24, 1874. After a three year battle over the patent, which he eventually won, Gidden became known as the “Father of Barbed Wire”.

Wireless remote control was invented by Austrian Robert Adler (1913–2007).

A modern pioneer ballistic missile was the A-4, commonly known as the V-2 developed by Nazi Germany in the 1930s and 1940s under the direction of Wernher von Braun.

Vinod Dham is an inventor, entrepreneur and venture capitalist. He is popularly known as the Father of the Pentium chip, for his contribution to the development of highly successful Pentium Processors from Intel. He is a mentor, advisor and investor; and sits on the boards of many companies including promising startups funded through his India based fund – Indo US Venture Partners, where he is the founding Managing Director.

Darwin

Philip Diehl

Alexander Graham Bell

Joseph Priestley

Louis Pasteur discovered that some molecules have mirror images and explained them as left-handed and right-handed versions of a chemical compound.

Sir Timothy John Berners-Lee  (born 8 June 1955), also known as TimBL, is an English engineer and computer scientist, best known as the inventor of the World Wide Web.

Michael Faraday’s generator. Faraday had created the first transformer in August 1831. A few months later he designed and made this simple piece of apparatus based on his ring, developing the first-ever electric generator.

Luis Alvarez discovered the iridium layer and also he had given a theory that dinosaurs were driven to extinction by the aftermath of a large meteorite impact on Earth. In 1968, he won Nobel Prize in Physics

Steel rolling mill

Botany

Polaroid Camera

Edward Jenner

Copernicus

Romer

Jonas Salk

Santiago Ramony Cajal is known as the father of neuroscience and he won the Nobel Prize in 1906 for Physiology or Medicine for his neuron doctrine.

Hahneman

Invented in 1760.

A list of Benjamin Franklin’s inventions reveals a man of many talents and interests. It was the scientist in Ben that brought out the inventor. His natural curiosity about things and the way they work made him try to find ways to make them work better.

Ben had poor vision and needed glasses to read. He got tired of constantly taking them off and putting them back on, so he decided to figure out a way to make his glasses let him see both near and far. He had two pairs of spectacles cut in half and put half of each lens in a single frame. Today, we call them bifocals.

Matthew Maury was known as the father of Oceanography and in his own lifetime he was called as ‘Pathfinder of the Seas’.