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The Professor's Cube (also known as the 5×5×5 Rubik's Cube and many other names, depending on manufacturer) is a 5×5×5 version of the original Rubik's Cube. It has qualities in common with both the 3×3×3 Rubik's Cube and the 4×4×4 Rubik's Revenge, and solution strategies for both can be applied.
Twin-lens reflex camera. The front of a Kinaflex twin-lens reflex camera. The focus rings of the two lenses are coupled with gears around their circumference in this simple design. A twin-lens reflex camera (TLR) is a type of camera with two objective lenses of the same focal length. One of the lenses is the photographic objective or "taking ...
Lasswell's model is still being used today and has influenced many subsequent communication theorists. Some of them expanded the model through additional questions like "Under What Circumstances?" and "For What Purpose?". Others used it as a starting point for the development of their own models. Lasswell's model is often criticized for its ...
Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.
Answers Corporation. Answers.com, formerly known as WikiAnswers, is an Internet-based knowledge exchange. The Answers.com domain name was purchased by entrepreneurs Bill Gross and Henrik Jones at idealab in 1996. [ 1 ][ 2 ] The domain name was acquired by NetShepard and subsequently sold to GuruNet and then AFCV Holdings.
Socratic questioning (or Socratic maieutics) [1] is an educational method named after Socrates that focuses on discovering answers by asking questions of students. According to Plato, Socrates believed that "the disciplined practice of thoughtful questioning enables the scholar/student to examine ideas and be able to determine the validity of those ideas". [2]
Radio show. In the 1940s, the game became a popular radio panel quiz show, Twenty Questions, first broadcast at 8 pm, Saturday, February 2, 1946, on the Mutual Broadcasting System from New York's Longacre Theatre on West 48th Street. Radio listeners sent in subjects for the panelists to guess in twenty questions; Winston Churchill 's cigar was ...
Graflex Speed Graphic format: 2.25''×3.25'' medium format, Miniature Speed Graphic, early 40s. [1] lens: Ektar F4.5, 101mm, focal plane shutter. The Speed Graphic was a press camera produced by Graflex in Rochester, New York. Although the first Speed Graphic cameras were produced in 1912, production of later versions continued until 1973; [2 ...