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Technology Stocks : LAST MILE TECHNOLOGIES - Let's Discuss Them Here -- Ignore unavailable to you. Want to Upgrade?

To: gpowell who wrote (6641)	3/13/2000 6:45:00 AM
From: MikeM54321	Respond to of 12823

"Of course, I don't imagine that these guys were sticking their eye in the beam 2 feet from the laser." gpowell- Again not being facetious, but what about the window washer who is within two feet of the gun(assuming of course it's located behind a high-rise window)? Could this be a potential problem that would be hard to do a work-around on? Also, what about the magnification situation, ie. binoculars or telescope, problem? Seems like someone just peering out the window may inadvertantly peer into a beam. I'm really curious as to how that problem could be solved. Assuming of course, it is a problem. And lastly, I was also thinking about the aligngment problem too. Just seems like considering the distance being discussed, it wouldn't take much to throw the beam off accidently and aim it where it shouldn't belong, where it may become a danger to someone's eye via the two scenarios above. Appreciate your comments. -MikeM(From Florida)

To: gpowell who wrote (6641)	3/13/2000 10:53:00 AM
From: Frank A. Coluccio	Read Replies (3) \| Respond to of 12823

"... permit me to be a bit cranky here. If it is true that you do not have any experience with 1.55um laser communications systems, then your statement, which I have italicized, is an overstatement of your direct experience. Therefore, the subsequent text should be retracted vis-…-vis the applicability to terabeam's communication system... You far understate the problems of inclement weather." hello gpowell, I welcome your crankiness. You help me by pointing out the shortcomings of my assumptions that I have achieved communication. As a brief aside, I watched a report last night on CNN, I think it was, that disclosed that bad hair days are now qualified to be considered as diseases, and worthy of clinical considerations. Kid you not. ----- Re: eye safety, my overall opinion regardless of wavelength used (anywhere in the 0.8 to 1.6 um range), and this covers the region that you are showing expert testimony in.. if you use a telescope or pair of binoculars looking into these things, you wind up coming out worse than if you simply looked into them with the naked eye. How much worse? Depends on the level of mag, the distance, the wavelength, and the power level of the source. Nothing vague or retractable there. I am having difficulty reading what your objections are. The basic scientific information that you are providing is helpful for rounding purposes, but it does not take into account magnification through optical aids, which is the crux of my observation and where I see room for more discussion. Not when one is viewing a transceiver from a distance with the naked eye. Re: the weather challenges that IR devices face in general, that is exactly what I was covering, their challenges, in general terms. I believe that I gave a well rounded account of my own personal experiences, which should have been useful for others to begin to extrapolate what the factors are in a general sense, when beginning to assess this new model. Am I being too lenient in your opinion, or too forgiving? IMO, I was neither, simply telling what I experienced in the past. If I didn't make it clear before, let me say it again: I do not have experience with the type of architecture that TeraBeam is proposing in all of its expanded features and attributes, and at the wavelengths and power levels inherent in their wares. Now, let me express some dissatisfaction with the way my hair looks today: I don't think that you have allowed in your replies (both here and on the tb board) that one should give credence to the potential problems to eye safety when viewing lasers, either directly up front with the naked eye, or more importantly where this model is concerned: through optical aids. FAC