Description: In honor of the anniversary of the discovery of x-rays, a look inside the Foucault pendulum that used to hang at the National Museum of American History.
Description: On June 14, 1777 the Continental Congress adopted the stars and stripes as the national flag and on the same day one hundred years later, the first observance of the Flag was held. However, it was not celebrated again on such a scale until 1916, in the midst of World War I, when President Woodrow Wilson pronounced the day Flag Day. Though not officially adopted by Congress as
Description: On June 14, 1777 the Continental Congress adopted the stars and stripes as the national flag and on the same day one hundred years later, the first observance of the Flag was held. However, it was not celebrated again on such a scale until 1916, in the midst of World War I, when President Woodrow Wilson pronounced the day Flag Day. Though not officially adopted by Congress as
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