🚀 go-pugleaf

In article <schuck.720989040@sfu.ca> Bruce_Schuck@sfu.ca writes:
>Some very interesting emissions research is being done in Colorado.
>The professor who has done this research has also come up with a
>gadget that can be set up on the road side to measure emissions of
>cars going by. It uses a TV camera to record license plate #'s and is
>relatively cheap. It is not as accurate as the Air Care type stations,
>but that isn't important because the 2 out of 10 cars pollute much
>more than the other 8.

This sounds ludicrious to me.  How the heck is this device going to
measure emissions quickly enough to photograph the offender?   It takes
time for gases to travel to the sensor!  In my case the tail-pipe is
on the left side of the car so the gases would have to travel 8 feet
before they reached the sensor.  The car is going to be travel a *long*
way before the gases reach the sensor.

Besides this, wind direction, wind speed, and air turbulence would all
have to factored in in order to decide which car produced the emissions
and how dispersed the gases were by the time they got to the sensor.
A certain error factor were be tolerable since an additional test would
be performed, but I can't beleive that this could do much better than
50% accuracy.

Bill "the skeptic" Arnett.
-- 
Bill Arnett                            Internet: arnett@unixg.ubc.ca