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The Beta Israel calendar is a lunar calendar of 12 months, each 29 or 30 days alternately. Every four years, there is a leap year which adds a full month (30 days). The calendar is a combination of the ancient calendar of Alexandrian Jewry, Book of Jubilees, Book of Enoch, Abu Shaker, and the Ge'ez calendar.
Strontium. Strontium-90 is a commonly used beta emitter used in industrial sources. It decays to yttrium-90, which is itself a beta emitter. It is also used as a thermal power source in radioisotope thermoelectric generator (RTG) power packs. These use heat produced by radioactive decay of strontium-90 to generate heat, which can be converted ...
Meta Platforms, Inc., [10] doing business as Meta, [11] and formerly named Facebook, Inc., and TheFacebook, Inc., [12] [13] is an American multinational technology conglomerate based in Menlo Park, California. The company owns and operates Facebook, Instagram, Threads, and WhatsApp, among other products and services. [14]
Beta angle ( ) In orbital spaceflight, the beta angle ( ) is the angle between a satellite 's orbital plane around Earth and the geocentric position of the Sun. [1] The beta angle determines the percentage of time that a satellite in low Earth orbit (LEO) spends in direct sunlight, absorbing solar energy. [2]
Beta waves were discovered and named by the German psychiatrist Hans Berger, who invented electroencephalography (EEG) in 1924, as a method of recording electrical brain activity from the human scalp. Berger termed the larger amplitude, slower frequency waves that appeared over the posterior scalp when the subject's eye were closed alpha waves.
Plasma beta. The beta of a plasma, symbolized by β, is the ratio of the plasma pressure ( p = n kB T) to the magnetic pressure ( pmag = B ²/2 μ0 ). The term is commonly used in studies of the Sun and Earth's magnetic field, and in the field of fusion power designs. In the fusion power field, plasma is often confined using strong magnets.
Lancia Prisma. A Lancia Beta 1300 Coupé photographed in Gorizia, northeastern Italy. The Lancia Beta (Type 828) was an entry-level luxury car produced by Italian car manufacturer Lancia from 1972 to 1984. It was the first new model introduced by Lancia after it had been taken over by Fiat in 1969.
Beta-glucan. Cellulose is an example of a (1→4)-β- D -glucan composed of glucose units. Beta-glucans, β-glucans comprise a group of β- D -glucose polysaccharides ( glucans) naturally occurring in the cell walls of cereals, bacteria, and fungi, with significantly differing physicochemical properties dependent on source.