🚀 go-pugleaf

95 out of 100 US telephone calls are transported over Fiber Optic cables
and systems.  The following material offers supportive information
to conduct an exciting lesson on how/why our voice is joined with over 
32,000 other conversations as it journeys through a Fiber Optic 
telephone cable!  All concepts are supported by simple classroom 
experiments, including comparison of human hair and optical fiber
under a microscope.  (This experiment is very popular)  Developed by
long-term Telephone Company Engineer D.B.Levels, this material has
been presented to science classes, teacher gatherings, civic meetings
and college classrooms.  Very practical and very popular. All materials 
may be duplicated for hand-outs.  Grade 6-12 recommended.

Package includes discussion text (including overviews), experiments,
facts and practical explanations, plus a section of actual telephone-
grade optical fiber (125um single-mode, step indexed fiber, end
stripped for viewing, approx 12" in length)  $4.00 (check or MO, no
cash), including self-addressed, stamped business envelope to: 
dB Levels, P.O.Box 295337, Lewisville, TX, 75029-5337.  30 day
money-back guarantee.

Yours truly,
Daniel B. Levels
sbmf11f@prodigy.com