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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Geometriae dedicata 81 (2000), S. 285-293 
    ISSN: 1572-9168
    Keywords: worm problems ; convex covers ; isoperimetric triangles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We find the unique smallest convex region in the plane that contains a congruent copy of every triangle of perimeter two. It is the triangle ABC with AB=2/3, ∠ B=60°, and BC≈1.00285.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2019-07-10
    Description: A successor to the Hubble Space Telescope, incorporating a 10 to 16 meter mirror, and operating in the UV-Visible-IR is being considered for emplacement on the Moon in the 21st Century. To take advantage of the characteristics of the lunar environment, such a telescope requires appropriate advances in technology. These technologies are in the areas of contamination/interference control, test and evaluation, manufacturing, construction, autonomous operations and maintenance, power and heating/cooling, stable precision structures, optics, parabolic antennas, and communications/control. This telescope for the lunar surface needs to be engineered to operate for long periods with minimal intervention by humans or robots. What is essential for lunar observatory operation is enforcement of a systems engineering approach that makes compatible all lunar operations associated with habitation, resource development, and science.
    Keywords: Astronomy
    Type: The Next Generation Space Telescope; 348-359
    Format: text
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