Calculation Collection

Scene in a lecture theatre, with chemical equations written on the blackboard, a woman giving a lecture, and students taking notes. circa 1940s

BABBAGEs ENGINE (2)
Charles Babbages Difference Engine, an instrument which went beyond simple calculation to embody some of the principles of computers

Schneider contest nerve centre by G. H. Davis
The Schneider contest nerve centre: timing at over 300 mph. How the amazing speeds of the seaplanes were recorded: the timekeepers and their work on Ryde Pier. Date: 1929

Mortar Calculations - Fort Wright - Fishers Island, New York
Directing the range of the Mortars - Fort Wright - Fishers Island - New York, USA. Military Cadets using complex higher mathematical formulae and telephone instructions to work out the exact aiming

Elementos de Matematica by Spanish architect Benito Bails
Elementos de Matematica (Elements of Mathematics), by Benito Bails (1730-1797), Spanish architect and mathematician of The Enlightenment. Trigonometric calculations

Elementos de Matematica by Benito Bails
Elementos de Matematica (Elements of Mathematics), by the Spanish architect and mathematician of The Enlightenment Benito Bails (1730-1797)

Comic postcard, Couple getting married. Wedding bells ring at the church, all is joy and jubilation. But, somewhere the stork sits on his perch, doing a little calculation! Date: 20th century

Advert for The Adder Adding Machine. 1909

WW1 War Loan poster Date: 1914

Messrs. Scheutzs New Calculating Machine
Messrs. Pehr (Per) Georg Scheutz (1785-1873) and Edvard Scheutzs (of Stockholm, Sweden) New Calculating (Tabulating) Machine

Circumference of the Earth. Leonardo da Vinci (1452-1519) de
Circumference of the Earth. Eratosthenes (250 BC) calculated the circumference of the Earth by measuring noontime shadows at two localities of different latitude

Childs slate and toy gun on a Christmas card. early 20th century

French bank note, 50 Francs
French bank note, Banque de France, 50 Francs, issued on 19 May 1949. With a portrait of the French mathematician and astronomer Urbain Jean Joseph Le Verrier (1811-1877) on the front

Childs slate with pen and toy soldiers on a New Year card. Date: early 20th century

Childs slate with pen and scribbles on a New Year card. Date: early 20th century

Childs slate with pen and scribbles on a Christmas card. Date: early 20th century

Childs slate with pen and baubles on a Christmas card. early 20th century

Abacus, also called a counting frame. Cesis. Latvia

Princess Trixie the Highly Educated Horse
Princess Trixie, a Grey 1/2 Arab mare, who was highly educated and travelled the world - here she is advertising (" Grand" ) National Cash Registers, by keeping her accounts in check

Calculating calendar - dates and days
A remarkable calculating calendar of Yogi Fazalelahi Shiekh. You follow the instructions and (remarkably) it works superbly and will tell you the day of the week for any day that has ever been

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