Talk:Arecibo Observatory/Archive 1
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| Archive 1 |
Diameter versus radius?
"The main collecting dish is 305 m"
"To aim the device, the receiver is moved to intercept signals reflected from different directions by the spherical dish surface of 270 m (870 ft) radius."
200.68.142.175 (talk) 03:25, 20 November 2020 (UTC) Baden K.
- The dish is a 305m diameter section of a sphere with a 265m radius (which somebody has rounded up to 270). Robminchin (talk) 07:17, 20 November 2020 (UTC)