Monday, March 30, 2015

More UV light photography

It is interesting to discover in everyday objects, the specific fluorescence of each one. The particular wavelength (i.e. color) of visible light which is irradiated depends on the characteristics of the substance illuminated by the ultraviolet light. As such a very interesting combination of colors can occur, depending on the varieties of materials the object has. The following dolls is an example:

Authenticity of money is also based on the markings using special pressing techniques that emit light (fluoresce) upon being irradiated by certains wavelengths of UV light. In the case of the Euro bills, the 400 nm UV doesn't seem to give away much from their characteristics:

The tulle material is quite fluorescent:

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