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Learn about the different technologies and applications of wireless power transmission, which is the transmission of electrical energy without wires as a physical link. Compare near-field and far-field techniques, such as inductive coupling, capacitive coupling, microwaves, and light waves.
Qi is an open standard for inductive charging of devices such as smartphones and tablets. It uses electromagnetic induction between coils to transfer power over distances up to 4 cm. Learn about its design, history, and manufacturers.
Learn about the origin and evolution of headphones, from the first telephone receivers to the modern wireless earbuds. Discover the different types of headphones, such as circumaural, supra-aural, earbuds, and bone conduction, and how they connect to various audio sources.
Quick Charge 3.0 (QC3.0) is a fast charging protocol developed by Qualcomm for USB devices. It supports higher voltages, improved efficiency, battery saver technologies, and dual charge options. Learn more about QC3.0 and its compatibility with other versions and devices.
Ray J is the younger brother of Brandy and a former reality TV star. He is known for his R&B songs, his sex tape with Kim Kardashian, and his technology companies Raytroniks and Raycon.
Learn about the history, types, and uses of phone connectors, a family of cylindrical electrical connectors for analog audio signals. Find out the differences between plugs, jacks, and sockets, and the terms for different numbers of contacts.
Learn about audio headsets, a combination of headphone and microphone that connect to telephones, computers or mobile phones. Find out the different styles, designs, compatibility and functions of audio headsets for various applications.
Parents are stressed now, and the nation’s top doctor agrees. Find out what parents can do to protect their physical and mental health amid all of today’s challenges.