Description

This week it's all about rainbows, light, reflection, refraction, and how it's just like an earthquake!

• Have you seen products marketed as "chemical free"? This weeks paper looks at those claims with an analytical eye.
• Goldberg, Alexander FG, and C. J. Chemjobber. "A comprehensive overview of chemical-free consumer products."

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John Leeman

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Shannon Dulin

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