spectrochemical analysis

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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

Apollo 12 astronaut Charles "Pete" Conrad stands beside the U.S. flag after is was unfurled on the lunar surface during the first extravehicular activity (EVA-1) Nov. 19, 1969. Footprints made by the crew can be seen in the photograph.

How Many People Have Been to the Moon?

International currencies, money, various banknotes, currency

A Brief (and Fascinating) History of Money

Hijacked United Airlines Flight 175 from Boston crashes into the south tower of the World Trade Center and explodes at 9:03 a.m. on September 11, 2001 in New York City. The crash of two airliners hijacked by terrorists loyal to al Qaeda leader Osama bin..

All 81 References in Fall Out Boy’s “We Didn’t Start the Fire,” Explained

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

Ahura Mazda - relief of the Zoroastrian god Ahura Mazda at the ancient ruins of Persepolis in Iran. Also known as Ormazd Zoroastrianism,

Which Religion Is the Oldest?

Panoramic view at sunrise of moai, Ahu Tongariki, Easter Island (Rapa Nui), Chile

6 Lost Civilizations

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Topics

nephelometry and turbidimetry electron spectroscopy refractometry atomization flame emission spectroscopy X-ray spectroscopy matrix effect absorptiometry radiochemical analysis turbidimetry qualitative chemical analysis gravimetric analysis volumetric analysis differential thermal analysis mass spectrometry chromatography numerical analysis vector analysis meta-analysis cluster analysis

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