Photonic crystals are periodic optical structures that can control the flow of light. Multiple reflections from surfaces separated by a distance similar to the wavelength prevent an optical beam ...

A crystal radio is basically a high Q resonator tied to an antenna and an envelope detector. These days the envelope detector is a point contact diode such as a 1N34 Germanium diode. The resonant ...

Uhrich, David L. and Maramde, Robert P. 1984. A Mössbauer Temperature Study of 1, 1′-Diacetylferrocene in A Cold Smectic C Liquid Crystal. Molecular Crystals and Liquid Crystals, Vol. 111, Issue. 1-2, ...

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We think of crystals as the gold standard of frequency ... [W3AXL] picked up a rubidium reference oscillator on eBay at a low cost, and he shows us how it works in the video you can see below.

Liquid crystals are substances that flow like a liquid but maintain some of the ordered structure of crystals. Liquid-crystal molecules tend to be elongated and to orient in specific directions.

The Price to Earnings (P/E) ratio, a key valuation measure, is calculated by dividing the stock's most recent closing price by the sum of the diluted earnings per share from continuing operations ...

She is the CEO of Xaris Financial Enterprises and a course facilitator for Cornell University. eBay is an online global commerce platform that allows users to connect and trade. Anyone can create ...

A few years ago, a slew of Internet memes labeling Tide Pods a "forbidden food" for their Gusher-like look led to the ...

eBay, Inc. is a commerce company, whose platforms include an online marketplace and its localized counterparts, including off-platform businesses in South Korea, Japan, and Turkey, as well as eBay ...

Crystal Palace's Jean-Philippe Mateta scored twice including a last-gasp penalty as they clawed their way back from two goals down to salvage a 2-2 Premier League draw against promoted Leicester ...