Question

6 класс англ стр 33 перевести что означает красный цвкт

Answer 1

Red color - region color in the long-wave part of the visible spectrum, corresponds to the minimum frequency of the electromagnetic field, perceived by the human eye. The range of red flowers in the spectrum is often defined wavelenght 620-740 nanometers, which corresponds to a frequency of 484-405 terahertz. Farthest limits of perception depends on a persons age.