telescopic sight

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Figure 6: Operating principle of the telescopic rifle sight (see text).

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Calendar showing the month of February

Why Are There Only 28 Days in February?

African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

Timeline of the American Civil Rights Movement

Shadow of a man holding large knife in his hand inside of some dark, spooky buiding

7 of History's Most Notorious Serial Killers

earthquake. Heavily damaged school in the town of Yingxiu after a major earthquake struck China's Sichuan Province on May 12, 2008.

The 6 Deadliest Earthquakes Since 1950

The Battle of New Orleans, by E. Percy Moran, c. 1910. Andrew Jackson, War of 1812.

26 Decade-Defining Events in U.S. History

Abstract vector hi speed internet technology background

History of Technology Timeline

The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

telescopic sight: Media

firearms

Images

Figure 6: Operating principle of the telescopic rifle sight (see text).

Figure 6: Operating principle of the telescopic rifle sight (see text).

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