aiting for water to boil ranks right up there with the other great time-wasters of our lives. Watching paint dry, watching grass grow, and so on. It is, unfortunately, one of those necessary evils that we need to endure. This is usually less of a problem with proper timing and planning, but many people don’t necessarily cook that […]

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First published on: http://www.optmagazine.com/2018/01/16/quality-photochromics/ on date 2018-01-15 16:49:11