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  2. Free-space optical communication - Wikipedia

    en.wikipedia.org/wiki/Free-space_optical...

    At the top right corner is a monocular for assisting the alignment of the two heads. Free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications or computer networking. "Free space" means air, outer space, vacuum, or something similar.

  3. Free voicemail: How to avoid paying to check your cell phone ...

    www.aol.com/news/2010-04-26-free-voicemail-how...

    Thanks to the decision of most cell phone carriers to include useless instructions and built in delays, checking voicemail is an infuriating and costly process; but there's an easy way to get free ...

  4. Visual voicemail - Wikipedia

    en.wikipedia.org/wiki/Visual_voicemail

    Visual voicemail is direct-access voicemail with a visual interface. Such an interface presents a list of messages for playback, as opposed to the sequential listening required using traditional voicemail, and may include a transcript of each message. In 2007, Apple's iPhone was the first cell phone promoting this feature.

  5. Laser communication in space - Wikipedia

    en.wikipedia.org/wiki/Laser_communication_in_space

    Laser communication in space is the use of free-space optical communication in outer space. Communication may be fully in space (an inter-satellite laser link) or in a ground-to-satellite or satellite-to-ground application. The main advantage of using laser communications over radio waves is increased bandwidth, enabling the transfer of more ...

  6. Free-electron laser - Wikipedia

    en.wikipedia.org/wiki/Free-electron_laser

    The free-electron laser FELIX Radboud University, Netherlands. A free-electron laser (FEL) is a fourth generation light source producing extremely brilliant and short pulses of radiation. An FEL functions much as a laser but employs relativistic electrons as a gain medium instead of using stimulated emission from atomic or molecular excitations ...

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!