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Albert Einstein, German-Swiss-American mathematician and physicist. Artist: Unknown
 
Albert Einstein and other physicists at Paul Ehrenfest's home, Leyden, Netherlands. Artist: Unknown
 
Albert Einstein, German-Swiss-American mathematician and physicist. Artist: Unknown
 
Albert Einstein, German-Swiss-American mathematician and physicist, with a student. Artist: Unknown
 
Prize offered in Scientific American, October 1920, for an essay on Einstein's theory of relativity. Artist: Unknown
 
Albert Einstein (1879-1955) at Mount Wilson Observatory. Artist: Unknown
 
Physics research laboratory at the Sorbonne, Paris 1895. Artist: Unknown
 
Lord Kelvin, Scottish mathematician and physicist, c1890. Artist: Unknown
 
Lord Kelvin, Scottish mathematician and physicist, 1852. Artist: Unknown
 
Lord Kelvin, Scottish mathematician and physicist, 1876 Artist: Unknown
 
Lord Kelvin, Scottish mathematician and physicist, with his compass, 1902. Artist: James Craig Annan
 
Lord Kelvin, Scottish mathematician and physicist, 1899. Artist: Unknown
 
Lord Kelvin, Scottish mathematician and physicist, 1897. Artist: James Craig Annan
 
Ader telephone system, 1881. Artist: Unknown
 
Cook and Wheatstone's 5-needle telegraph, 1837 (1915). Artist: Unknown
 
Communicating by speaking tube, 1882. Artist: Unknown
 
Carbon microphone, 1882. Artist: Unknown
 
Rear view of Charles Wheatstone's electric (railway) telegraph, 1850. Artist: Unknown
 
Caselli's pantelegraph, 1874 Artist: Unknown
 
Caselli's pantelegraph, 1874 Artist: Unknown
 
Alexander Glen's facsimile telegraph system, 1886 Artist: Unknown
 
Telegraph wire at the Greenwich works, c1865. Artist: Unknown
 
'US Mail Boat', 1870.  Artist: Leila Bauman
 
Long wave transmitter masts at a Marconi radio station at Berne, Switzerland, c1925. Artist: Unknown
 
Henry Cole, British designer, civil servant and writer, 1871. Artist: Unknown
 
Lord Kelvin, Scottish physicist and mathematician, 1897. Artist: Spy
 
Under the Dark Blue Waters, 1872. Artist: Joseph Swain
 
'The Man for the Post', 1882. Artist: Joseph Swain