Metamerism is when two colors look the same under certain lighting but differ in spectral compositions. Learn how metamerism works, its applications in color science and industry, and how to manage it effectively. METAMERISM Definition: Metameric segmentation or metamerism is an architectural body plan in some animals in which the similar body segments called metameres or somites are serially repeated one after another. The animals which exhibit such features called metamerically segmented. Illustration of color metamerism : In column 1, a ball is illuminated by monochromatic light. Multiplying the spectrum by the cones' spectral sensitivity curves gives the response for each cone type. In column 2, metamerism is used to simulate the scene with blue, green and red LEDs, giving a similar response. In colorimetry, metamerism is a perceived matching of colors with different (nonmatching) spectral power distributions. Colors that match this way are called metamers. A spectral power ... Metamerism in Annelids Metamerism is a key structural feature observed in annelids, where the body is divided into a series of repeating segments called metameres or somites. This segmented organization is a hallmark of the phylum Annelida, which includes earthworms, leeches, and polychaetes. Each segment typically contains a repetition of organs and structures such as muscles, nerves, blood vessels, and excretory units, though some functional specialization can occur.
