Submitted by admin on Tue, 04/15/2014 - 09:23
definition:
The separation of white light into colours or of any radiation according to wavelength
sentence:
Although it has long been known that a rainbow is produced by the dispersion of white light through rain droplets via refraction, there is far more to this optical phenomenon than first meets the eye.
difficulty:
medium
toefl frequency:
2
toefl classification: