Real Genius
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IMDB rating: 6.70 Plot: Two brilliant teenagers head a team of young geniuses developing a laser for what they believe is a class project. When they find out that their professor intends to turn their work over to the government for use as a weapon, they decide to ruin his plans. |
Actors: Kilmer Val,Jarret Gabriel,Atherton William,Gries Jon,Peralta Stacy,Ades Daniel,Aybar Andres,Giambalvo Louis,Lauter Ed,Shull Charles,Billingslea Beau,Parks Charles,Frye Sean,Comedy,Romance,Sci-Fi,
*URGENT* Quick 10 points for you physics geniuses!! *URGENT* Cassegrain telescope?
Link to picture: http://i608.photobucket.com/albums/tt165 /trojans_cheerchick/walk2786.gif
A Cassegrain astronomical telescope uses two mirrors to form the image. The larger (concave) objective mirror has a focal length f1 = +51.7 cm. A small convex secondary mirror is mounted L1 = 42.5 cm in front of the primary. As shown in the figure below, light is reflected from the secondary through a hole in the center of the primary, thereby forming a real image L2 = 7.89 cm behind the primary mirror.
What is the radius of curvature of the secondary mirror?
use the Descartes law
Etienne de Quercy, Big Pointure! | Feb 02, 2010
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