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Product Description. The GorillaDrive takes external USB flash drives to the next rugged level. Made from a durable silicon compound and a metal loop, it can ...

Manufacturer of high quality optical passive components. DK Photonics produces a large array of fiber optic components such as 1064 nm high power isolator, MM ...

High Lasers offers qualified IR detection card for otpical detection of various infrared lasers among wavelength of 800nm-1600nm.

Diamond turning is an ultraprecision machining technology for the generation of complex functional surfaces and extremely fine microstructures with the use of ...

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Ultraviolet light (along with all others forms of electromagnetic radiation) comes in discrete energy packets called "photons". The energy of a photon is given by:

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Oct 24, 2024 — In circular polarization the electric vector rotates about the direction of propagation as the wave progresses. Light may be polarized by ...

Glass Dynamics, offers a myriad of glass materials. Physical properties for Borofloat.

The UVA range causes sun tanning in the human skin. The UVB range causes sun burning. The UVC range is absorbed by DNA and thus can cause cancer and mutations. This is also the range that is most effective in inactivating bacteria and viruses. The Vacuum UV range is absorbed strongly by water and air and thus can only be transmitted in a vacuum.

The portion of the UV spectrum (the “germicidal†region) that is important for the disinfection of water and air is the range that is absorbed by DNA (RNA in some viruses). This “germicidal range†is approximately 200 – 300 nm, with a peak germicidal effectiveness at about 260 nm. The mechanism involves absorption of a UV photon by pyrimidine bases (principally thymine) where two pyrimidine bases are next to each other on the DNA chain. The “photochemistry†involves formation of a “dimer†that links the two bases together. This causes a disruption in the DNA chain, such that when the cell undergoes mitosis (cell division), the replication of DNA is inhibited.

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where h is the Planck constant (6.626755 x 10-34 J s), c is the speed of light (2.997925 x 108 m s-1), n is the frequency (Hz) of the light, is the wave number (cm-1 or m-1) of the light and l is the wavelength (nm or m). Usually photochemical "events" involve absorption of only one photon per molecule.

Advanced oxidation describes processes that induce accelerated oxidation of organic pollutants in water and air. When carried to completion, the only products are water, carbon dioxide and mineral acids from any chlorine, nitrogen or sulfur present. This process is called "mineralization". Advanced Oxidation Technolgies (AOTs) come in many varieties and usually involve the generation of "hydroxyl" (OH) radicals, which attack and oxidaize the organic contaminants. UV-based AOTs usually involve the generation of OH radicals by the photolysis of hydrogen peroxide (H2O2).

Anti-Reflection Coating - for Maximum ClarityAn anti-reflection coating (ARC) is a type of optical coating applied to the surface of lenses and other optical elements to reduce reflection. Torga Optical applies this coating to both the front and back surfaces of the lenses in order to minimise all reflections that might be caused by the light emitted by a digital device or any other light source (such as lights at night or interior lights).From an aesthetic point of view, an anti-reflection coating also allows for one's eyes to be more visible to those around you. With no unwelcome reflections on the outer lens surface, the wearer's eyes are clearly visible.Not all anti-reflection coatings are the same. It all depends on the equipment and processes used during the manufacturing process. Torga Optical has the latest technology vacuum coating equipment and software to provide superior anti-reflection coatings to lenses - all at cost-effective prices and with guarantees.The latest technology Torga anti-reflection coatings include the following products:- Clarity - for clearer reflection-free lenses- Clarity Plus - for clearer and cleaner lenses- Iridio - for clearer, cleaner and harder lensesAll Torga Optical lenses are manufactured using the latest in German-precision lens technology at the Torga Lens Manufacturing Laboratory in Maitland, Cape Town. This means that there are no middlemen, no heavy mark-ups, and no long waits for your spectacles.Click here to make an appointment online at your nearest Torga Optical.

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Ultraviolet light is that portion of the electromagnetic spectrum that lies beyond the “purple†edge of the visible spectrum and has wavelengths between 100 and 400 nm. The UV spectrum is further divided into ranges as follows:

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Ultraviolet photons are particularly energetic and when absorbed in molecules can cause bonds to be broken (photochemistry).

- Clarity - for clearer reflection-free lenses- Clarity Plus - for clearer and cleaner lenses- Iridio - for clearer, cleaner and harder lensesAll Torga Optical lenses are manufactured using the latest in German-precision lens technology at the Torga Lens Manufacturing Laboratory in Maitland, Cape Town. This means that there are no middlemen, no heavy mark-ups, and no long waits for your spectacles.Click here to make an appointment online at your nearest Torga Optical.

The latest technology Torga anti-reflection coatings include the following products:- Clarity - for clearer reflection-free lenses- Clarity Plus - for clearer and cleaner lenses- Iridio - for clearer, cleaner and harder lensesAll Torga Optical lenses are manufactured using the latest in German-precision lens technology at the Torga Lens Manufacturing Laboratory in Maitland, Cape Town. This means that there are no middlemen, no heavy mark-ups, and no long waits for your spectacles.Click here to make an appointment online at your nearest Torga Optical.

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Nov 16, 2020 — A stereo microscope on the other hand is generally used to inspect larger objects such as small mechanical pieces, minerals, insects, and more.

Diffraction grating ... In optics, a diffraction grating is an optical grating with a periodic structure that diffracts light, or another type of electromagnetic ...

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UV has many commercial applications in society. The major ones are: UV disinfection of water and air, UV curing of inks and coatings, UV disinfection of foods, UV-based Advanced Oxidation destruction of pollutants in water and air.

201918 — The skin naturally radiates infrared heat every day. Infrared light has shown immense health benefits, from pain relief to reducing inflammation ...

All Torga Optical lenses are manufactured using the latest in German-precision lens technology at the Torga Lens Manufacturing Laboratory in Maitland, Cape Town. This means that there are no middlemen, no heavy mark-ups, and no long waits for your spectacles.Click here to make an appointment online at your nearest Torga Optical.

Feb 20, 2022 — In the case of specular reflection, the photons just propagate according to Maxwell's equations. A high conductivity material or a boundary ...

From an aesthetic point of view, an anti-reflection coating also allows for one's eyes to be more visible to those around you. With no unwelcome reflections on the outer lens surface, the wearer's eyes are clearly visible.Not all anti-reflection coatings are the same. It all depends on the equipment and processes used during the manufacturing process. Torga Optical has the latest technology vacuum coating equipment and software to provide superior anti-reflection coatings to lenses - all at cost-effective prices and with guarantees.The latest technology Torga anti-reflection coatings include the following products:- Clarity - for clearer reflection-free lenses- Clarity Plus - for clearer and cleaner lenses- Iridio - for clearer, cleaner and harder lensesAll Torga Optical lenses are manufactured using the latest in German-precision lens technology at the Torga Lens Manufacturing Laboratory in Maitland, Cape Town. This means that there are no middlemen, no heavy mark-ups, and no long waits for your spectacles.Click here to make an appointment online at your nearest Torga Optical.