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Victor Schilt’s Keyboard Adder
The calculating machine of the Swiss clockmaker Victor (or Viktor) Schilt (1822-1880) was exhibited in 1851 at the Great Exposition of the Works of Industry of all Nations in Crystal Palace ...
CNN2y
World Expos have shaped the course of human history for 170 years, showcasing the world of tomorrow.
Beginning in London in 1851 and quickly spreading around the world ... Opening in October 2021, Expo 2020 Dubai is the first event of its kind in the Middle East. Here, CNN dives into the past ...