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Spectronic 20. The Spectronic 20 is a brand of single-beam spectrophotometer, designed to operate in the visible spectrum [ 1] across a wavelength range of 340 nm to 950 nm, with a spectral bandpass of 20 nm. [ 2][ 3] It is designed for quantitative absorption measurement at single wavelengths. [ 1] Because it measures the transmittance or ...
ReNu is a brand of soft contact lens care products produced by Bausch & Lomb. [1] By far the most popular brand of lens solutions until 2006, ReNu has rebranded its formulations as renu sensitive (formerly ReNu Multi-Purpose) and renu fresh (formerly ReNu MultiPlus), the latter containing a patented ingredient called hydranate, known by chemists as hydroxyalkylphosphonate, that removes protein ...
Bausch & Lomb (since 2010 stylized as Bausch + Lomb[ 2]) is an American-Canadian eye health products company based in Vaughan, Ontario, Canada. It is one of the world's largest suppliers of contact lenses, [ 3] lens care products, pharmaceuticals, intraocular lenses, and other eye surgery products. [ 4][ 5] The company was founded in Rochester ...
Bushnell introduced the AR Optics 1-4 scope in 2018. It has a 30mm tube and has an objective lens diameter of 24mm. It has caliber-specific reticles that are illuminated for use in low-light. The AR Optics 1-4 is intended for use with modern sporting rifles. [31]
A solution to the problem was to use a bubble to determine the reference plane. The bubble in an airplane is subject to the plane's acceleration. If the plane is in sharp turn, the bubble will be displaced. Consequently, when the navigator is using a bubble sextant, the pilot tries to fly the plane straight and level.
Phoroptor is a registered trademark currently owned by Reichert Technologies, filed Apr 25, 1921, by DeZeng Standard of New Jersey, with the USPTO, serial number 71146698. The word was coined at that time for the newest version of their phoro-optometer. DeZeng was purchased in 1925 by American Optical of Massachusetts, which continued to market ...
A stereoscopic rangefinder or stereoscopic telemeter[ 1] is an optical device that measures distance from the observer to a target, using the observer's capability of binocular vision. It looks similar to a coincidence rangefinder, which uses different principles and has only one eyepiece. German instruments tended to use the stereoscopic ...
1-800 Contacts. 1-800 Contacts Inc. is an American contact lens retailer based in Draper, Utah. The brands that 1-800 Contacts use includes Johnson & Johnson Vision Care, Alcon, Bausch & Lomb and CooperVision. The company was founded as the industry's first way to buy contacts online and has since expanded to provide online prescription ...