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Also in 2016, Quizlet launched "Quizlet Live", a real-time online matching game where teams compete to answer all 12 questions correctly without an incorrect answer along the way. [15] In 2017, Quizlet created a premium offering called "Quizlet Go" (later renamed "Quizlet Plus"), with additional features available for paid subscribers.
The list of organisms by chromosome count describes ploidy or numbers of chromosomes in the cells of various plants, animals, protists, and other living organisms.This number, along with the visual appearance of the chromosome, is known as the karyotype, [1] [2] [3] and can be found by looking at the chromosomes through a microscope.
In a slightly different sense, the term history refers not to an academic field but to the past itself or to individual texts about the past. History is a broad discipline encompassing many branches. Some focus on specific time periods, such as ancient history, while others concentrate on particular geographic regions, such as the history of ...
Following an attack on the Đắk Tô Base, [52] and actions on hill 882 by the 1-503rd that saw 7 men dead and 34 wounded, [53] 330 men of 2-503 moved in to assault Hill 875. [54] At 10:30, as the Americans moved to within 300 metres (984 ft) of the crest, PAVN machine gunners opened fire on the advancing paratroopers.
November 25 – The Russian Academy of Sciences announces a competition among chemists and physicists to provide "the best explanation of the true causes of electricity including their theory", with a deadline of June 1, 1755 (on the Julian calendar used in Russia, June 12 on the Gregorian calendar used in Western Europe and the New World).
1967: Vela nuclear test detection satellites discover the first gamma-ray burst 1970: James H. Ellis proposed the possibility of "non-secret encryption", more commonly termed public-key cryptography , a concept that would be implemented by his GCHQ colleague Clifford Cocks in 1973, in what would become known as the RSA algorithm, with key ...
March 1 – E. Remington and Sons of Ilion, New York, start production of the first practical typewriter. March 3 – Censorship : The U.S. Congress enacts the Comstock Law , making it illegal to send any "obscene, lewd, or lascivious" books through the mail.
1.2 nobelium-258: 1.2 uranium-216m: 1.31 polonium-187: 1.40 nihonium-278: 1.4 sodium-35: 1.5 radium-215: 1.55 darmstadtium-271m: 1.7 astatine-191: 1.7 thorium-208: 1.7 thorium-221: 1.73 polonium-215: 1.781 hassium-265: 1.96 bismuth-185: 2 roentgenium-272: 2 astatine-191m: 2.1 radium-213m: 2.1 thorium-222: 2.237 uranium-215: 2.24 polonium-190: 2 ...