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

showy crested Asiatic duck; often domesticated

showy crested Asiatic duck; often domesticated

showy crested Asiatic duck; often domesticated

showy crested Asiatic duck; often domesticated

showy crested Asiatic duck; often domesticated

showy crested Asiatic duck; often domesticated

showy crested Asiatic duck; often domesticated

showy crested Asiatic duck; often domesticated

showy crested Asiatic duck; often domesticated