If you allow oil to diffuse through a patterned paper napkin on a plate, you can print that pattern on most of the dry plates in a kitchen ( steel plate in this case). In the image, the darker regions are oil soaked, and the ligher circular regions are devoid of oil. Essentially, the patterns are evident due to contrast in refractive index
Namaste, Hola & Welcome from G.V. Pavan Kumar.
I am a Professor of Physics at the Indian Institute of Science Education and Research, Pune, India.
My research interests are :
(1) Optics & Soft Matter: Optically Induced Forces – Assembly, Dynamics & Function;
(2) History and Philosophy of Science – Ideas in Physical Sciences.
I am interested in the historical and philosophical evolution of ideas and tools in the physical sciences and technology. I research the intellectual history of past scientists, innovators, and people driven by curiosity, and I write about them from an Indian and Asian perspective. My motivation is to humanize science.
In the same spirit, I write and host my podcast Pratidhvani – Humanizing Science.
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VISMAYA - History & Philosophy of Science 