Dear Wikiwand AI, let's keep it short, summarize this topic like I'm... Ten years old or a College student
Ectoplasm (from Greek ektos 'outside' and plasma 'something formed or molded') is a term used in spiritualism to denote a substance or spiritual energy "exteriorized" by physical mediums. It was coined in 1894 by psychical researcher Charles Richet. Although the term is widespread in popular culture, there is no scientific evidence that ectoplasm exists and many purported examples were exposed as hoaxes fashioned from cheesecloth, gauze or other natural substances.
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