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Cave Drawings
TMost of the artwork was created with a pigment called red ochre and its mulberry colour is remarkably still vibrant.To date very little ancient art has been found in Africa because the geology doesn't preserve it. -
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Petroglyphs
<a href='http://www.desertusa.com/pnm/pnm.html' >More than 15,000 prehistoric and historic Native American and Hispanic petroglyphs (images carved in rock) stretch 17-miles along Albuquerque's West Mesa escarpment. Associated archeological sites provide important chapters in a 12,000 year-long story of human life in the Albuquerque area. -
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The Alphabet
<a href='http://www.todayifoundout.com/index.php/2013/09/the-origin-of-the-english-alphabet/' >Dating back nearly four thousand years, early alphabetic writing, as opposed to other early forms of writing like cuneiform (which employed the use of different wedge shapes) or hieroglyphics (which primarily used pictographic symbols), relied on simple lines to represent spoken sounds. Scholars attribute its origin to a little known Proto-Sinatic, Semitic form of writing developed in Egypt between 1800 and 1900 BC. -
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The Telephone
In the 1870s, two inventors 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. Elisha Gray and Alexander Graham Bell entered into a famous legal battle over the invention of the telephone, which Bell won. -
The Computer
"Who invented the computer?" is not a question with a simple answer. The real answer is that many inventors contributed to the history of computers and that a computer is a complex piece of machinery made up of many parts, each of which can be considered a separate invention. In 1936 Konrad Zuse invented the - Z1 Computer, which was the First freely programmable computer.
