Tag: speckle

Dec 20

Snowtonics: the photonics of snow?

Fresh snow is bright, white and opaque. What does this actually mean, optically? Fresh snow is opaque If you’ve seen snow, you will know this to be true. But why? Snow is made of, erm, snowflakes, which are made of ice, which is transparent, not opaque. Snow is what we call a multiple scatterer, in …

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Sep 24

Gas sensing paper appears online

Jane Hodgkinson's latest study on the use of integrating spheres in wavelength modulation spectroscopy has appeared on Applied Physics B's "online first service" The detection and quantification of gas concentrations by measurement of their optical absorption has considerable great scientific and commercial importance. Extending the optical pathlength in gas sample cells is of interest to …

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