The document summarizes a laboratory experiment conducted by Neil A. Bardeskar and Austin J. Nadar to determine unknown wavelengths of light using single-slit diffraction. They observed interference patterns from monochromatic light passing through slits and fibers. Their results showed that the actual wavelength of red light is between 620-750 nm, validating the accuracy of the experiment. Applications of this technique include measuring the diameters of silk and cotton fibers and blood capillaries in medicine.

1. 1.Neil A. Bardeskar, Roll no: 203, UID: 212589
2. Austin J. Nadar, Roll no:199, UID:212098
SPHY030PR Laboratory project
September 2022
Department Of Physics, St Xavier’s College Mumbai

3. Cylindrical
Straight
edge
Interference

7. Image 1
Image 2
Image 3

10. The actual wavelength of red light varies from 620 nm to
750 nm which proves the accuracy of our experiment.

11. Applications
Unknown
Wavelength
Diameter of
Silk and
Cotton fibers
In Medicine,
to calculate
diameter of
blood
capillaries
Unknown
Diameter

12. David 2000 (https://physics.stackexchange.com/users/71328/david-2000), Diffraction
pattern without a slit, URL (version: 2016-05-05):
https://physics.stackexchange.com/q/194240
By Wisky - Own work, CC BY-SA 3.0,
https://commons.wikimedia.org/w/index.php?curid=15113998
Epzcaw, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via
Wikimedia Commons
Asad Moosvi (https://physics.stackexchange.com/users/36417/asad-moosvi), What is
the fringe separation in Young's double slit experiment?, URL (version: 2020-06-11):
https://physics.stackexchange.com/q/101686
By Srithern - Own work, CC BY-SA 3.0,
https://commons.wikimedia.org/w/index.php?curid=17017505
Diffraction Patterns From Helium-neon Laser is a photograph by Sheila Terry/science
Photo Library. which was uploaded on September 15th, 2018.