YOUNG’S DOUBLE SLIT EXPERIMENT PART 02

For more information:
www.7activestud...
[e-mail]
www.7activemedi...
[e-mail]
www.sciencetuts...
[e-mail]
Contact: [phone],
040-64501777 / 65864777
7 Active Technology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of Happy Learning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use.
In the experimental setup, we use a sodium source of light. It gives an intensively bright golden yellow light. Ahead of this source of light, we have a single slits. It is rectangular and arranged vertically. It is nearly 1 mm wide. Symmetrically to S, there are two slits S1 and S2. Which are nearly 0.3 mm wide, the distance d between the two slits is nearly 1 mm. A screen is held parallel to the slits at a distance of nearly 2 meter.The above arrangement ensures that light waves coming from S1 and S2 in the same phase. So, S1 and S2 are coherent sources.Let us now consider a point P on the screen. When either S1 and S2 alone is open, there is a continuous full light all along the screen. However, when both the slits are open, this uniformity disappears. Instead, we have a set of alternate bright and dark vertical lines, equally thick and equally distant from each other. These are called interference fringes.In arriving at P, the waves from S1 and S2 have to travel different paths. So, the waves arrive at P with a certain path difference. If path difference is equal to nλor phase difference is 2nπ, then the two wave trains reinforce each other giving a fringe of high intensity.

[@Yoursphysio]

Very good explanation

[@babitasengar980]

Do we have to learn this derivation?