Physics Topic: Superposition

Explain the meaning of the term diffraction.

Show an understanding of experiments which demonstrate diffraction including the diffraction of water waves in a ripple tank with both a wide gap and a narrow gap.

Show an understanding of the terms interference and coherence.

Show an understanding of experiments which demonstrate twosource interference using water, light and microwaves.

Understand the conditions required if twosource interference fringes are to be observed.

Recall and solve problems using the equation x=D(wavelength)/a for doubleslit interference using light.

(For H2 Syllabus only) Recall and solve problems by using the formula dsin(theta)=n x wavelength and describe the use of a diffraction grating to determine the wavelength of light. [The structure and use of the spectrometer is not included.]