Astronomers from Bulgaria and Egypt have performed multi-wavelength observations of a well-known blazar designated S5 ...

Sonar Videos, Noise Videos, Wave - Water Videos, Ring - Jewelry Videos, Radio Wave Videos, Circle Videos, Aiming Videos, Black Color Videos, Pointing Videos, Special Effects Videos, Computer Graphic ...

What's a royalty-free license? Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional ...

The energy harvesting system, which consists of a high-Q ferrite rod antenna and a high-efficiency rectifier, was developed to efficiently harvest power from AM broadcasting radio waves. The rectifier ...

With the advances in spectrally efficient communication techniques established in over-the-air wireless networks for ultra-low SNR links, underwater RF communications using electromagnetic (EM) wave ...