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Midwest Optical Systems Bi450-77Midwest Optical Systems Bi450 77 Blue Interference Bandpass M77 Bandpass Interference Filters Bi Series Narrow Interference Bandwidth 20 35nm FWHM; Narrow bandwidth High transmission ? 85% Designed for use with laser diodes Ideal wavelength separation when multiple light sources of similar wavelengths are present Reflective, mirror type surface that helps minimize thermal effects Available in sizes up to 79. 5mm sq. APPLICATIONS: Bi Series are popular

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4.1 ★★★★★
Based on 1148 reviews
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Product Reviews
★★★★★ 5
Excellent Reference Book!
Format: Paperback
I don't think this book was meant to be read cover to cover. If it is, the reader better start reading at an early age because there are over 1,000 pages and print is small. However, the book is an excellent reference and provides data that other similar books do not cover. It is a worthy investment.
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Reviewed in the United States on July 8, 2024
★★★★★ 5
Comprehensive beyond words.
Format: Paperback, Format: Paperback
A very comprehensive reference on poetry. A budding poet should not live without a copy of this work of more than four decades.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 31, 2019
★★★★★ 4
The definitive reference
Format: Kindle
The definitive reference. It can be a bit hard to use if you're not up on the jargon, but it's an invaluable work if you are interested in the technical aspects of poetics.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 27, 2016
★★★★★ 5
This vital work for poets, critics of poetry, ...
Format: Paperback
This vital work for poets, critics of poetry, and literature specialists receives a hearty update making it even more relevant for users. No serious poet or student of poetry and literature can live without it. It is a necessary reference.
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Reviewed in the United States on March 11, 2017
★★★★★ 5
Must-have book for all poets!
Format: Kindle
Every poet and playwright must own this book. It is a great resource for MFA writing students as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 23, 2018
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