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18 godz. temu · Hubble's law, also known as the Hubble–Lemaître law, is the observation in physical cosmology that galaxies are moving away from Earth at speeds proportional to their distance. In other words, the farther they are, the faster they are moving away from Earth. The velocity of the galaxies has been determined by their redshift, a shift of the light they emit toward the red end of the visible ...
18 godz. temu · t. e. 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 ...
18 godz. temu · The global African diaspora is the worldwide collection of communities descended from people from Africa, predominantly in the Americas. The African populations in the Americas are descended from haplogroup L genetic groups of native Africans. The term most commonly refers to the descendants of the native West and Central Africans who were enslaved and shipped to the Americas via the Atlantic ...
18 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.
18 godz. temu · The University of Michigan (U-M, UMich, or simply Michigan) is a public research university in Ann Arbor, Michigan.Founded in 1817, it is the oldest institution of higher education in the state. The University of Michigan is one of the earliest American research universities and is a founding member of the Association of American Universities.In the fall of 2023, the university enrolled over ...
18 godz. temu · Definition and overview. Hygiene is a practice related to lifestyle, cleanliness, health, and medicine.In medicine and everyday life, hygiene practices are preventive measures that reduce the incidence and spread of germs leading to disease.. Hygiene practices vary from one culture to another.. In the manufacturing of food, pharmaceuticals, cosmetics, and other products, good hygiene is a ...
