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A cloaking device is a hypothetical or fictional stealth technology that can cause objects, such as spaceships or individuals, to be partially or wholly invisible to parts of the electromagnetic (EM) spectrum. Fictional cloaking devices have been used as plot devices in various media for many years. Developments in scientific research [ 1] show ...
The Time Reading Program (TRP) was a book sales club run by Time–Life, the publisher of Time magazine, from 1962 through 1966. Time was known for its magazines, and nonfiction book series' published under the Time-Life imprint, while the TRP books were reprints of an eclectic set of literature, both classic and contemporary, as well as nonfiction works and topics in history.
Dazzle camouflage, also known as razzle dazzle (in the U.S.) or dazzle painting, is a family of ship camouflage that was used extensively in World War I, and to a lesser extent in World War II and afterwards. Credited to the British marine artist Norman Wilkinson, though with a rejected prior claim by the zoologist John Graham Kerr, it ...
Many of the programs in this list were not originally produced for PBS, but were acquired from other sources such as the BBC. [1] All acquired programs are edited for Nova, if only to provide American English narration and additional voice of interpreters (translating from another language). [1] Most of the episodes aired in a 60-minute time ...
The Scientific Revolution was a series of events that marked the emergence of modern science during the early modern period, when developments in mathematics, physics, astronomy, biology (including human anatomy) and chemistry transformed the views of society about nature.
In physics, time is defined by its measurement: time is what a clock reads. [ 1] In classical, non-relativistic physics, it is a scalar quantity (often denoted by the symbol ) and, like length, mass, and charge, is usually described as a fundamental quantity.
A classical planet is an astronomical object that is visible to the naked eye and moves across the sky and its backdrop of fixed stars (the common stars which seem still in contrast to the planets). Visible to humans on Earth there are seven classical planets (the seven luminaries ). They are from brightest to dimmest: the Sun, the Moon, Venus ...
Reproducibility. Reproducibility, closely related to replicability and repeatability, is a major principle underpinning the scientific method. For the findings of a study to be reproducible means that results obtained by an experiment or an observational study or in a statistical analysis of a data set should be achieved again with a high ...