What is light Intensity/Absolute Intensity/Irradiance?
When talking about light, intensity is the power per unit area when the light is transmitted through a (real or imaginary) flat surface that is perpendicular to the direction of the beam. It is usually represented by the symbol Iand common units are W/m2 or W/cm2. For...What is a Numerical Aperture?
Numerical aperture is a measure of how many angles of acceptance an optic can accept. It is described by the following equation: where NA is the numerical aperture, n is the refractive index, and is the cone angle. Assuming the optic is in air (n=1), the numerical...What is an Chromatic Aberration?
Chromatic aberration is an aberration caused by dispersion. When a beam of light is transmitted through a lens, dispersion causes the wavelengths to focus at different focal points. The aberration can be corrected by adding other materials to essentially cancel out...What is an Aberration?
An aberration is when an optical system deviates from the expected ideal outcome. For example, lenses are expected to focus all rays of light to a single focal point. In practice, no lenses accomplish this. The cause of the deviation is called an aberration. In...What is Refraction?
Refraction is when a light beam changes direction after entering a new medium. This is why objects in the water are seen at a different place from where they actually are; the light has been “bent” when exiting the water. The image below shows light being refracted...
Introducing our new Applied Spectroscopy Division
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HYPER-Nova Highest Performance Raman Spectrometer
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