Use a compass to make an accurate drawing of the wave fronts in a double-slit interference experiment similar to Fig. 25.17c. Place the slits 2.0 cm apart and let the wavelength of the incident wave be 1.0 cm. Using a straightedge, draw lines of constructive interference (antinodes) and use them to find the locations of the m = ±1 maxima on a screen 12 cm from the slits. Measure the angles of the maxima with a protractor; do they agree with those given by Eq. (25-17)? Explain any discrepancy.

Transcribed Image Text:

d sin 0 = m2 (m = 0, +1, +2,...)