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Latest Large Zenith Telescope Stories

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2008-10-09 06:15:00

A team of internationally renowned astronomers and opticians may have found a way to make "unbelievably large" telescopes on the Moon. "It's so simple," says Ermanno F. Borra, physics professor at the Optics Laboratory of Laval University in Quebec, Canada. "Isaac Newton knew that any liquid, if put into a shallow container and set spinning, naturally assumes a parabolic shape"”the same shape needed by a telescope mirror to bring starlight to a focus. This could be the key to making a...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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