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illusion
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How does the McGurk effect trick your brain?
optical illusion: refraction of light mirage Ambiguous figure seen as either a white vase or two black profiles Examples of optical illusions.
Exploring different states of consciousness
Discover
Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution
The Rise of the Machines: Pros and Cons of the Industrial Revolution
Time zone map with standard time zones and International Date Line
Why Are Some Time Zones 30 Minutes Off Instead of an Hour?
Sydney New Years Eve Fireworks
Why Does the New Year Start on January 1?
David Cameron. President Barack Obama and Prime Minister David Cameron of the United Kingdom talk during the G8 Summit at the Lough Erne Resort in Enniskillen, Northern Ireland, June 17, 2013
What’s the Difference Between a President and a Prime Minister?
Cathedrale St.Jean in Lyon, France has a 14th-century astronomical clock that shows religious feast days till the year 2019; Perpetual Calendar
Ten Days That Vanished: The Switch to the Gregorian Calendar
United States Electoral College votes by state
How Many Electoral College Votes Does Each U.S. State Have?
Town of Sisimiut located on the coast of the Davis Strait on Kangerluarsunnguaq Bay, Greenland
The Largest Islands in the World

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optical illusion: refraction of light
mirage
Ambiguous figure seen as either a white vase or two black profiles
Examples of optical illusions.
How does the McGurk effect trick your brain?
Exploring different states of consciousness
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