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Strontium was first isolated as a metal in 1808 by Humphry Davy using the then newly discovered process of electrolysis. During the 19th century, strontium was mostly used in the production of sugar from sugar beets (see strontian process ).
Strontium belongs to the same periodic family as calcium (alkaline earth metals), and is metabolised in a similar fashion, preferentially targeting metabolically active regions of the bone. 89 Sr is an artificial radioisotope used in the treatment of osseous (bony) metastases of bone cancer .
The two discovered a new element in a molybdenum sample that was used in a cyclotron, the first element to be discovered by synthesis. It had been predicted by Mendeleev in 1871 as eka-manganese. [171] [172] [173] In 1952, Paul W. Merrill found its spectral lines in S-type red giants. [174]
AST SpaceMobile (NASDAQ: ASTS) stock bounced back Thursday from yesterday, surging 5.2% in the first 10 minutes of trading on a big advance in direct-to-cell satellite communications (DTC) technology.
AST SpaceMobile (NASDAQ: ASTS) stock is surging in Friday's trading. The space-tech company's share price was up 9.2% as of 2 p.m. ET, while the S&P 500 index and the Nasdaq Composite index were ...
On Sept. 12, 2024, AST SpaceMobile (NASDAQ: ASTS) took a bold leap into the future. That was the day it announced the launch of its first five operational satellites and, basically, the beginning ...
First animals in space (fruit flies). United States V-2 [4] [6] 24 February 1949: First two-stage liquid-fueled rocket, that sets a record altitude of 244 miles (393 km) (WAC Corporal missile mounted onto a V-2 rocket). United States Bumper-5: 14 June 1949: First mammal in space (Albert II, a rhesus monkey). First primate in space. United ...
A 100,000-year-old ochre-processing workshop was found at Blombos Cave in South Africa. It indicates that early humans had an elementary knowledge of mineral processing. Paintings drawn by early humans consisting of early humans mixing animal blood with other liquids found on cave walls also indicate a small knowledge of chemistry. [3] [4]