Two identical radiators have a separation of `d=lambda//4` where `lambda` is the wavelength of the waves emitted by either source. The initial phase difference between the sources is `lambda//4`. Then the intensity on the screen at a distant point situated at an angle `theta=30^@` from the radiators is (here `I_0` is intensity at that point due to one radiator alone)

Two identical radiators have a separation of d=lambda//4 where lambda is the wavelength of the waves emitted by either source. The initial phase difference between the sources is pi//4 . Then the intensity on the screen at a distant point situated at an angle theta=30^@ from the radiators is (here I_0 is intensity at that point due to one radiator alone)

Two identical sources each of intensity I_(0) have a separation d = lambda // 8 , where lambda is the wavelength of the waves emitted by either source. The phase difference of the sources is pi // 4 The intensity distribution I(theta) in the radiation field as a function of theta Which specifies the direction from the sources to the distant observation point P is given by

Two identical sources each of intensity I_(0) have a separation d = lambda // 8 , where lambda is the wavelength of the waves emitted by either source. The phase difference of the sources is pi // 4 The intensity distribution I(theta) in the radiation field as a function of theta Which specifies the direction from the sources to the distant observation point P is given by