a detector consisting of a fine wire in contact with a galena crystal; acts as a rectifier

a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals

a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals

a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals

a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals

a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals

a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals

a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals

a white crystalline substance with a bitter aftertaste; used as a fungicide or in making aspirin or dyes or perfumes

a white crystalline substance with a bitter aftertaste; used as a fungicide or in making aspirin or dyes or perfumes