| 11. | The mirror landing aid was a gyroscopically-controlled concave mirror on the port side of the flight deck.
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| 12. | In the sign convention used in optical design, a concave mirror has negative radius of curvature, so
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| 13. | :It appears to me that this is asking about the angle of reflection in the concave mirror.
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| 14. | Small concave mirrors show up in Flemish paintings and German engravings of the 15th and 16th centuries.
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| 15. | What about a concave mirror ? ( talk ) 22 : 15, 2 December 2009 ( UTC)
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| 16. | People have been projecting images using concave mirrors and pin-hole cameras ( camera obscura ) since Roman times.
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| 17. | With hand held lamps, a concave mirror is tilted by a trigger to focus the light into pulses.
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| 18. | To study Croce through its medium is like studying the face of a man in a concave mirror.
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| 19. | One of the girls stepped forward to light the flame from the sun's rays in a concave mirror.
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| 20. | A few decades later, Isaac Newton invented the reflecting telescope, which uses a concave mirror to focus incoming light.
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