(Answered) 1 a two-point source interference pattern is created in a

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1. A two-point source interference pattern is created in a ripple tank using identical sources in phase. Describe the change in the observed interference pattern if each of the following changes was made individually:

a) the sources separation was decreased

b) the wavelength of the sources was decreased

c) the amplitude of the sources was decreased

2. Explain the role played by Augustin Fresnel, Simon Poisson, and Dominique Arago with regard to the wave theory of light and its acceptance.

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