The phenomenon in which electromagnetic waves, such as light waves, vibrate in a preferred plane or planes; or the process of confining the vibrations to certain planes. In unpolarized light the vibrations are equally distributed in all directions perpendicular to the direction of propagation of the wave. If all the vibrations are confined to one plane, the light is said to be plane-polarized (or linearly polarized). If the light in one plane is out of phase with the light in the plane at right angles to it (i.e. if the peaks and troughs of the waves are not in step), then the light is said to be circularly polarized. If all these phenomena occur together, the light is said to be elliptically polarized. Plane polarization is usually caused by scattering, and circular polarization by strong magnetic fields. Circularly and elliptically polarized light can also be produced by a wave plate. See also stokes parameters.

Polarization of lightnotes PDF

UV adhesives are acrylate- or epoxy-based resins which polymerize and thus cure by irradiation with special UV light sources. These uv adhesives are used mainly in industrial settings because they cure in a matter of split seconds, allowing a high production output.

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The entire spectrum of drying, hardening, disinfectioning and measuring - with the Hönle Group you can benefit from more than 40 years of experience in industrial UV-technology and -systems.

What is polarization of lightin physics

Thanks to the new "Black&Light" technology, black epoxy resin adhesives can now also be cured in thick layers purely with UV light. This new Black&Light technology allows complete curing with UV light without having to resort to secondary curing mechanisms.  More information on these adhesives can be found under Black&Light.

UV adhesives can be cured with both UV gas discharge lamps and UV LED light equipment. Unlike LED light sources, which emit monochromatic light, gas discharge lamps have a broad light spectrum. For curing adhesives, the UV portion at different wavelengths within the light spectrum of gas discharge lamps is used at the same time, while the light spectrum of LEDs is limited to a specific wavelength.

With its Vitralit® brand Panacol offers a broad range of UV adhesives. As a member of Hoenle Group and as a partner of UV equipment manufacturer Hoenle, innovative UV- and UV-LED curing systems are also available from Panacol.

Some special acrylate and epoxy based adhesives also cure under visible light at wavelengths of 405 nm or more. These are used, for example, for bonding UV-impermeable plastics.