Fresnel biprism: fringe width and wavelength
Two virtual sources from a biprism interfere; beta = lambda (a + b)/d with d = 2a(mu - 1)alpha.
About this experiment
| Subject | Physics |
|---|---|
| Class | 12 |
| Chapter | 10. Wave Optics |
| NCERT section | 10.4 |
| Level | Advanced (JEE / Olympiad) |
| Time | about 14 minutes |
| Access | Included in a PractiSci plan |
What you do in the lab
Change the controls and watch the physics behave in real time in 3D. Live readouts and graphs show the numbers behind it, and the Learn tab has the theory, procedure, observations and viva questions. Works on a phone or a laptop, in English and Hindi.
Topics: Fresnel biprism · fringe width · coherent sources · interference
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