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To: John Finley who wrote (47)	4/8/2003 12:07:56 PM
From: kinkblot	Read Replies (1) of 75

From a leading producer of dichroic art glass: navitar.com "Thus, what we commonly call Dichroic Glass is actually a dielectric Interference Filter attached to the surface of a piece of glass." He gives the total thickness of the stack as 48 to 96 millionths of an inch, or about 12,000 to 24,000 ångstroms - not so thin after all. Speaking of Pfeiffer, I was close to buying Pfeiffer Vacuum (any connection to Arthur?) last week at $19.25. But, I didn't, mainly because the trading volume is way too low here (only about 1,000 shares /day). Also, there is usually a dropoff in their results from Q4 to Q1, and I'm worried it might be bigger than usual this year. WT

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