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What is Fluorescence?

Molecules have many types of energy levels and all of them can be excited by absorbing photons. Two common energy levels are electronic, where the electrons get excited into higher energy levels, and vibrational, where molecules get excited into different types of...

What is Reflection?

What is Diffuse Reflectance? Diffuse reflectance is a measurement technique used to analyze light scattered and reflected from the surface of a sample. Unlike specular reflection, which reflects light in a single direction, diffuse reflectance occurs when light...

What is Scattering?

In general, scattering is what happens when light is forced to deviate from a straight path, or forced to deviate from a reflection angle described by the law of reflection. For example, in the X-ray region, atoms can scatter the X-rays in a well defined pattern. This...
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