Huygens’s wave model of light is commonly used to understand the effect of diffraction. Diffraction of light creates a unique repeating patternĭiffraction of light creates a repeating pattern where a white band is observed centrally and bands of rainbow are dispersed away from the centre, each separated by dark space.If the slit size is larger than light’s wavelength, diffraction still occurs but is unnoticeable to the naked eye.Įxamples of diffraction can be seen in all types of waves, including all electromagnetic waves, sound waves or waves observed in water.Smaller the slit, greater the degree of diffraction. If the slit size is smaller than or equal to light’s wavelength, considerable diffraction occurs.The degree of bend is dependent on the relative difference between its wavelength and size of the slit. The scattering process bends light’s direction of propagation. When light passes through an aperture, slit or around a bend/edge of an object, it also experiences this scattering effect, causing it to propagate outward. How to Do Diffraction related Calculation Questionsĭiffraction is the scattering behaviour a wave exhibits when it travels through a small opening or around the end of an object. HSC Physics SyllabusĬonduct investigations to analyse qualitatively the diffraction of lightĬonduct investigations to analyse quantitatively the interference of light using double slit apparatus and diffraction gratings dsinθ=mλ (ACSPH116, ACSPH117, ACSPH140)ĭiffraction & Young's Double Slit Experiment This is part of the HSC Physics course under the topic Light: Wave Model.
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