amber/yellow lights

Paul Ivsin paul at IMPLICATURE.COM
Sat Dec 1 04:44:43 UTC 2001

----- Original Message -----
From: "David Bowie" <db.list at PMPKN.NET>

Well, if you're moving *really* fast, i *guess* the blue shift would make it
look orange...

David, wondering how fast you'd have to go to make it look green

FWIW, from --

"There's an apocryphal story about the physicist who tried to beat a ticket
for running a red light by telling the judge that at the speed he was
approaching the signal, the red light was Doppler shifted so it appeared
green. The judge pondered this for a few minutes and tore up the red light
ticket. Then, seeing as the physicist would have to be driving about a
quarter of the speed of light to see a red signal as green, the judge fined
him 269 million dollars for speeding, one dollar for each kilometer per hour
over the limit."


...   ...   ...
Paul Ivsin
paul at

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