interference and diffraction of light waves

absorbed absorption amplitude amplitudes angle aperture beam behind color dark diagram diffraction direction double education effect electromagnetic encyclopedia energy experiment frequency grating gratings illustration incident infrared intensity interference laboratory lamp lesson light monochromatic newton object optic optical optics overlap pattern phase phenomena photon physic physical physics point principle prism propagation properties quantum radiation rainbow ray reflection refraction ring rings science screen selective single slit spectrum structure transmission transmitted transverse vector visible wave wavelength waves young