Goldman Sachs chief U.S. equity strategist David Kostin flags an interesting development in the stock market in 2013: the dispersion of individual stocks' price-to-earnings ratios has fallen to the ...

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BARRINGTON, N.J., Aug. 12, 2021 /PRNewswire/ — Edmund Optics(R), leading global manufacturer and supplier of optical components, now internally manufactures short pulse optics with low group delay ...

The Sigma Corporation is pleased to announce that FLD (“F” Low Dispersion) glass, which has a performance equal to fluorite glass, has been adopted and used in our new high performance lenses. FLD ...

Binoculars for nature lovers and bird photographers have to meet the highest standards in terms of color fidelity and richness of details. Low quality binoculars are the last thing a birder needs. In ...

The Celestron Nature DX ED 12x50 are some of the finest handheld binoculars for stargazing, wildlife observations and more. Their key in flexibility is their use of high-end extra-low dispersion (ED) ...

The Standard & Poor’s 500 stock index (SP500) has gained 8% year-to-date, but a closer look reveals significant disparities within the broader equity market, according to a recent report by David ...

The velocity of light in vacuum, c, is approximately 3 × 10 8 m s −1, fast enough to make 7.5 round-the-world trips in a single second, and to move a distance of 300 mm in 1 ns. This ultrahigh speed ...

In this Celestron Nature DX ED 12x50 review we're going to see why it's worth spending as much as you can afford on a pair of binoculars. With 12x magnification and 50mm objective lenses, at first ...