How can cobalt blue glass help us to see violet and blue light?
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Cobalt blue glass is largely used for filtering out the yellow light of sodium flame. Sodium flame has very intense light having yellow color which can dominate other flame colors at small amount of sodium flame.
But if we use cobalt blue glass to see the flame it filters out all almost all the sodium light while passing out the light of other colors too like violet of potassium and blue color too.
But if we use cobalt blue glass to see the flame it filters out all almost all the sodium light while passing out the light of other colors too like violet of potassium and blue color too.
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