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March 8th 08, 10:21 PM
posted to rec.radio.amateur.antenna
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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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