Thread: The Rest of the Story
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Old March 8th 08, 10:21 PM posted to rec.radio.amateur.antenna
Richard Clark Richard Clark is offline
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Default The Rest of the Story
On Sat, 8 Mar 2008 10:12:04 -0800 (PST), K7ITM wrote:

Is there any limit to how low a light level I can use and still see
the pattern?

Hi Tom,

The Quantum Efficiency of the eye is between 40% and 50%. The time to
convert one photon in a visual receptor is roughly 14 femtoseconds.

I have seen no component that can match the bandwidth, dynamic range,
AND sensitivity of the eye.

73's
Richard Clark, KB7QHC
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