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An extension tube, sometimes also called a closeup tube or an extension ring, is used with interchangeable lenses to increase magnification. This is most often used in macro photography . [ 1 ]
The sol–gel approach is a cheap and low-temperature technique that allows the fine control of the product's chemical composition. Even small quantities of dopants, such as organic dyes and rare-earth elements , can be introduced in the sol and end up uniformly dispersed in the final product.
The chlorine atom leaves the phenyl ring in the pyrolysis tube at all temperatures; however, optimizing the pyrolysis temperature will minimize this problem. The free-radical (phenyl radical) generated in this process is not resonance-stabilized and mitigates the deposition of a parylene-like material on the downside of the pyrolysis tube.
The Original Lensbaby used interchangeable drop-in apertures held in by a rubber o-ring. [ 8 ] In 2005, Lensbaby released the Lensbaby 2.0, an upgrade to the Original Lensbaby which featured a sharper, brighter optic, creating greater contrast between areas of blur and sharpness.
The festival features a wide range of photography styles, including macro, landscape, underwater, wildlife, and storytelling, along with inspiring talks, live Q&A sessions, and workshops.
Macrocyclic rings containing sp 2 centers display a conformational preference for the sp 2 centers to avoid transannular nonbonded interactions by orienting perpendicular to the plan of the ring. W. Clark Still proposed that the ground state conformations of macrocyclic rings, containing the energy minimized orientation of the sp 2 center ...
LS Blue Ring 11 elements, 8 groups 1/1600 0.5m / 1.64 ft 105mm 22mm ... LS Macro Blue Ring 9 elements, 8 groups 1/1600 40 cm / 1.3 ft. 86mm 73mm
Amazon (NASDAQ: AMZN) is a no-brainer stock for almost any portfolio, and even though it's already the second-largest company in the U.S. by sales, it has so much more potential. It represents ...