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Naturally occurring terbium (65 Tb) is composed of one stable isotope, 159 Tb. Thirty-seven radioisotopes have been characterized, with the most stable being 158 Tb with a half-life of 180 years, 157 Tb with a half-life of 71 years, and 160 Tb with a half-life of 72.3 days.
Terbium is a chemical element; it has the symbol Tb and atomic number 65. It is a silvery-white, rare earth metal that is malleable and ductile . The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas.
Terfenol-D is an alloy of terbium, iron and dysprosium, with the formula of Tb x Dy 1−x Fe 2. It was initially developed in the 1970s by the Naval Ordnance Laboratory in the United States. The technology for manufacturing the material efficiently was developed in the 1980s at Ames Laboratory under a U.S. Navy-funded program. [ 69 ]
Today's Wordle Answer for #1274 on Saturday, December 14, 2024. Today's Wordle answer on Saturday, December 14, 2024, is DROOL. How'd you do? Next: Catch up on other Wordle answers from this week.
The TB-1 was piloted by Stefanovskiy, the I-5s were piloted by Kokkinaki and Grozd. [2] Zveno-2 Tupolev TB-3 and three I-5, the third aircraft was attached over the fuselage. First flight August 1934. The TB-3 was piloted by Zalevskiy, the I-5s were piloted by Altynov, Suprun, and Suzi. [2] Zveno-3 TB-3 and two Grigorovich I-Z under the wings ...
The 2014 World Cup in Brazil has begun. Check HuffPost's World Cup dashboard throughout the tournament for standings, schedules, and detailed summaries of each match.
In October 1906 these were re-classified as torpedo boats and their original names were replaced by the numbers TB.1 to TB.12. To avoid confusion with the surviving early 1st Class torpedo boats, those survivors bearing numbers up to TB.79 inclusive were renumbered to include a "0" before the number (e.g. TB.79 became TB.079).
President-elect Donald Trump’s team is assessing multiple options to fulfill his long-promised pledge to end birthright citizenship, according to two sources familiar with the discussions ...