What is the purpose of the cobalt blue glass?

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asked Mar 12, 2020 64.1k views

1 Answer

Oktieh · Answer 1 · 2020-03-15T23:10:36+0000

Step-by-step explanation:

Cobalt blue glass is also used as an optical filter in flame tests to filter out the yellow flame caused by contamination with sodium, and expand the ability to see violet and blue hues.

What is the purpose of the cobalt blue glass?

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