Question

In a red glass filter, of the colors that make up white light, which if any are reflected or absorbed?

Answer 1

Since this is not my area of expertise, I searched Google under the key words "'red glass filter' absorb" to get these possible sources:

http://answers.yahoo.com/question/index?qid=20071207215108AAC3uTe
http://media.wiley.com/product_data/excerpt/97/04712048/0471204897.pdf
http://www.camd.lsu.edu/newsletters/January2000.pdf

Within the larger sites, use the <Find> command to search for "red glass filter."

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps. Thanks for asking.