pycnometer

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The Lost Colony of Roanoke, North Carolina, where 115 people mysteriously disappeared c. 1590. John White discovers the word Croatoan carved onto a tree upon his return to the deserted Roanoke Colony in 1590

The Lost Colony of Roanoke

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

Ice Sledge Hockey, Hockey Canada Cup, USA (left) vs Canada, 2009. UBC Thunderbird Arena, Vancouver, BC, competition site for Olympic ice hockey and Paralympic ice sledge hockey. Vancouver 2010 Olympic and Paralympic Winter Games, Vancouver Olympics

10 Best Hockey Players of All Time

Horses. Equus caballus. Horse stable. A brown horse looks out from his stall through the window.

Horsing Around: 7 of the Weirdest Racehorse Names in History

Secret Service Agent Listens To Earpiece

Secret Service Code Names of 11 U.S. Presidents

Vietnam War. U.S. President Lyndon B. Johnson awards the Distinguished Service Cross to First Lieutenant Marty A. Hammer, during a visit to military personnel, Cam Ranh Bay, South Vietnam, October 26, 1966. President Johnson

Vietnam War Timeline

Attack on Pearl Harbor. December 7, 1941. Pearl Harbor infographic. World War II. Hawaii. United States. Japan. SPOTLIGHT VERSION

Attack on Pearl Harbor Timeline

pycnometer

instrument

Also known as: density meter

Learn about this topic in these articles:

chemical analysis

In chemical analysis: Density measurements
…instruments called density meters or pycnometers.
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specific gravity

In specific gravity
…are the Westphal balance, the pycnometer, and the hydrometer.
Read More