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Pictures Dated 4th August 2005

Choose from 1375 pictures in our Pictures Dated 4th August 2005 collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.


Featured 4 Aug 2005 Print

Guglielmo Marconi, Italian physicist and inventor and pioneer of wireless telegraphy. Artist: Spy

Guglielmo Marconi, Italian physicist and inventor and pioneer of wireless telegraphy. Marconi (1874-1937) discovered a way in which waves could be used to send messages from one place to another without wires or cables. Having read about Heinrich Hertz's work with electromagnetic waves, he began experiments of his own, and in 1894 successfully sounded a buzzer 9 metres away from where he stood. In 1902 Marconi sent a radio signal across the Atlantic in Morse code. Five years later, a Canadian scientist, Reginald Fessenden, transmitted a human voice by radio for the first time. Marconi's inventiveness and business skills made radio communication a practical proposition. Cartoon from Vanity Fair, London.

© Oxford Science Archive / Heritage-Images

Featured 4 Aug 2005 Print

Richard Owen, English zoologist, 1884. Artist: Edward Linley Sambourne

Richard Owen, English zoologist, 1884. After qualifying and practising as a surgeon, Owen (1804-1892) made major contributions in the fields of anatomy and paleontology. He was responsible for first coining the word dinosaur (terrible lizard) in 1841 for the fossilized reptiles that had been discovered. Owen was opposed to Darwin's theories, believing that natural selection was insufficient to explain evolution. The figure on the left with a letter in his mouth is TH Huxley (1825-1895), the English biologist who championed Darwin. Cartoon from Edward Linley Sambourne's Fancy Portrait series for Punch, (London, 5 January 1884).

© Oxford Science Archive / Heritage-Images

Featured 4 Aug 2005 Print

Method of measuring angles with a cross-staff, 1636. Artist: Unknown

Method of measuring angles with a cross-staff, 1636. Edmund Gunter (1581-1626) was an English mathematician and astronomer who invented many measuring instruments which bear his name; Gunter's Chain, the 22-yard-long, 100-link chain used by surveyors; Gunter's Line, the forerunner of the modern slide-rule; Gunter's Scale, a navigational tool; and the portable Gunter's Quadrant. He also introduced the words cosine and cotangent into the language of trigonometry. From The Description and Use of the Sector by Edmund Gunter. (London, 1636).

© Oxford Science Archive / Heritage-Images