Katie Stonesifer S09 geosc210Exercise6

Katie Stonesifer S09 geosc210Exercise6 - GEOSC 210-01 Katie...

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GEOSC 210-01 EXERCISE #6 Page 1 of 2 Katie Stonesifer Read Chapter Four 1. What is the resolution of a telescope? What physical process limits it? Light gathering power- photons. Objects that are dimmed can be seen. The size of our eyes limits us. 2. What is the difference between a refracting and a reflecting telescope? Refracting, light is gathered then focused by a lens. Reflecting, uses mirrors instead of lens to gather the light. 3. What is the purpose of an interferometer? To decrease diffraction by interfering with light waves, making the best high resolution out there. Ex: two close stars looked like one can now be distinguished from one another 4. How, apart from magnification, do binoculars help one see better? Brings in light- brightness 5. Which binoculars should one choose to observe at night: a pair with 50- millimeter lenses or a pair with 35-millimeter lenses? Why? 50, because a larger lens allows more light to be gathered. When more light enters the eye, dimmer objects can be seen. 6. If one looks with binoculars down a beach on a hot day, one sees that distant
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This note was uploaded on 02/12/2010 for the course GEOS 210 taught by Professor Mr.schubert during the Spring '09 term at Butler CCC.

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Katie Stonesifer S09 geosc210Exercise6 - GEOSC 210-01 Katie...

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