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2. Electromagnetic spectrum - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_spectrum

   The copper cables (transmission lines) which are used to carry lower-frequency radio waves to antennas have excessive power losses at microwave frequencies, and metal pipes called waveguides are used to carry them. Although at the low end of the band the atmosphere is mainly transparent, at the upper end of the band absorption of microwaves by ...

3. Coplanar waveguide - Wikipedia

   en.wikipedia.org/wiki/Coplanar_waveguide

   Coplanar waveguides play an important role in the field of solid state quantum computing, e.g. for the coupling of microwave photons to a superconducting qubit.In particular the research field of circuit quantum electrodynamics was initiated with coplanar waveguide resonators as crucial elements that allow for high field strength and thus strong coupling to a superconducting qubit by confining ...

4. Parabolic antenna - Wikipedia

   en.wikipedia.org/wiki/Parabolic_antenna

   Similarly, in transmitting dishes, the microwave transmitter may be located at the feed point. An advantage of parabolic antennas is that most of the structure of the antenna (all of it except the feed antenna) is nonresonant, so it can function over a wide range of frequencies (i.e. a wide bandwidth). [3]

5. Black Friday shoppers spent a record $10.8 billion online ...

   www.aol.com/black-friday-online-sales-track...

   People didn't just fill their plates this Thanksgiving weekend -- data shows they also filled their online shopping carts. Black Friday online shopping this year set a new high, reaching $10.8 ...

6. ISO 216 - Wikipedia

   en.wikipedia.org/wiki/ISO_216

   Although they have also officially adopted the ISO 216 paper format, Mexico, Panama, Peru, Colombia, the Philippines, and Chile also use mostly U.S. paper sizes. Rectangular sheets of paper with the ratio 1: √ 2 are popular in paper folding, such as origami, where they are sometimes called "A4 rectangles" or "silver rectangles". [9]

7. US home sales rose in October, notching their first annual ...

   www.aol.com/us-home-sales-rose-october-150211361...

   Existing home sales rose 3.4% last month, from September, to a seasonally adjusted annual rate of 3.96 million, the National Association of Realtors said Thursday. The latest home sales topped the ...