Today there are many wireless technologies that utilize RF design ranging from mobile phones to satellite TV to wireless Internet connections and Bluetooth devices.
This article is intended to provide insight into how these technologies work and considerations during the design, development and verification process.
Joseph von Fraunhofer erforschte um 1814 das Phänomen der dunklen Linien im Sonnenspektrum. Er hat sie als Erster systematisch untersucht, vermessen und veröffentlicht. Sie dienten ihm als objektiver Maßstab für die Entwicklung und Prüfung des Optikglases. Die Fraunhofer'schen Linien gingen in die physikalische Terminologie ein und trugen wesentlich zur Entwicklung von Spektralanalyse und Astrophysik bei.
Pi Day 2015 - Celebrating one of math's greatest numbers
International Pi Day, which honours one of the world's most recognisable mathematical symbols, is traditionally celebrated on March 14 at 1.59 pm – a date and time that gives the first six digits of the number pi (3.14159) in the US date format.
Researcher Joseph von Fraunhofer, born in 1787, brought us closer to the stars. Counted as one of the founders of modern optics, he succeeded in manufacturing telescopes in a quality that had never been seen before. In 1814, he made his most significant discovery, which was then named after him – Fraunhofer lines. These make it possible for us to get a closer look at space and to understand how stars are born.
Coaxial cables conducts electrical signal using an inner conductor mostly copper or copper plated wire surrounded by an insulating wire and enclosed by a shield mostly one to four layers of woven braided aluminum or copper wire, and aluminum foil. Common applications of coaxial cables include video and CATV distribution, RF and microwave transmission and computer instrumentation and connectors.
WAGO Corporation’s Triggered Timer Relay supports E-stop circuitry within space-restricted panels. Upon E-Stop activation, the falling edge of a trigger signal initiates the 859-477’s off-delay timer for sequential shutdown. The device’s four highly adjustable time delay ranges enable a PLC to log the stopped position of all components.
Markets, Strategy, and Forecasts 2014 to 2020
The concentrated solar power market is set to explode despite environmental objections to the technology. The latest CSP launch, Ivanpah solar electric generating system is an engineering marvel that delivers on the full promise of solar energy.