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Polarised Light Microscopy - Ascorbic Acid (Vitamin-C)

Splotches of oil on a wet road? Nope, these are nanoscopic 'hills' in an extremely thin film of Vitamin-C. The colours are a result of variations in the thickness of the film, on the order of the wavelength of light. The colours occur as a result of thin film interference.

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Appearing like 'standing electromagnetic fields' these patterns are a result of birefringence in Vitamin-C (Ascorbic acid). Lines of similar colour arise due to contours of equal or integer multiples in the film thickness.

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Appearing like 'standing electromagnetic fields' these patterns are a result of birefringence in Vitamin-C (Ascorbic acid). Lines of similar colour arise due to contours of equal or integer multiples in the film thickness.

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