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1 day ago · Diffraction grating. In optics, a diffraction grating is an optical grating with a periodic structure that diffracts light, or another type of electromagnetic radiation, into several beams traveling in different directions (i.e., different diffraction angles). The emerging coloration is a form of structural coloration.
10 hours ago · Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, and into the future. It is a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in the conscious ...
10 hours ago · In 1987, the United States House of Representatives and Senate passed a bill proposed by Democratic Representative John Conyers Jr. to define jazz as a unique form of American music, stating "jazz is hereby designated as a rare and valuable national American treasure to which we should devote our attention, support and resources to make certain ...
10 hours ago · Bonded by Blood is the debut studio album by American thrash metal band Exodus. Although the album was completed in the summer of 1984, it was not released until 1985 due to issues with Exodus and the record label. It is considered one of the most influential thrash metal albums of all time. [3] This is also the only full-length studio album of ...
10 hours ago · Brazil is one of the three countries in Latin America with an operational Synchrotron Laboratory, a research facility on physics, chemistry, material science and life sciences, and Brazil is the only Latin American country to have a semiconductor company with its own fabrication plant, the CEITEC.
