Discovering the universe

Discovering the universe

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A HOLE TELESCOPE If you cannot obtain a telescope to view the partial phase of a solar eclipse, here is another safe method. Obtain some pieces of cardboard (paper plates work well) and punch a hole in one. ... Before the eclipse, prepare a variety of holes of different sizes and then during the eclipse try them at varyinganbsp;...

Title:Discovering the universe
Author:Charles E. Long
Publisher:HarperCollins Publishers - 1980


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