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20 godz. temu · In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between space and time. In Albert Einstein 's 1905 treatment, the theory is presented as being based on just two postulates: [p 1] [1] [2] The laws of physics are invariant (identical) in all inertial frames of reference ...
20 godz. temu · Educational research. Educational technology (commonly abbreviated as edutech, or edtech) is the combined use of computer hardware, software, and educational theory and practice to facilitate learning. [1] [2] When referred to with its abbreviation, "EdTech", it often refers to the industry of companies that create educational technology.
20 godz. temu · In its inaugural season, Heroes featured an ensemble cast of twelve main characters. During the first season, the NBC Heroes cast page listed ten characters among the cast; Leonard Roberts arrived later, and Jack Coleman was promoted to series regular as of the eleventh episode.. For the second season of the show, Santiago Cabrera, Tawny Cypress, and Leonard Roberts left the main cast.
20 godz. temu · Alexander Karpinsky, geologist and mineralogist, the first President of the Soviet Academy of Sciences. Alexander Keyserling, naturalist, a founder of Russian geology. Maria Klenova, a founder of marine geology, polar explorer. Wladimir Köppen, meteorologist, author of the commonly used Köppen climate classification.
