Ask HN: Consumer Spectroscopy?
Is there any way, as a consumer, to use spectroscopy to determine what atoms/molecules are contained in a product?For instance when you buy gold leaf to check that it's really gold. Or to see if your water is contaminated with, say, lead or PFOA. Or even to compare different kinds of water, like different brands of bottled water.As it is, as a consumer, I have to rely on marketing and regulatory oversight. And…