Ultrawave

Examples

• In E. E. Smith's Lensman series, ultrawaves propagate through the sub-ether superluminally, and were used for weapons, communications, and other applications, and had various frequencies.
• In Isaac Asimov's Foundation series, "ultrawave" and "hyperwave" are used interchangeably to represent a superluminal communications medium.
• In the Star Trek universe, subspace carries faster-than-light communication and travel.
• In the Star Trek universe, the first example of an ultrawave is developed as an alternative means of faster-than-light travel, ostensibly to replace warp drive.
• In the universe, the hyperwave decoder allows the player to know what race, size, and mission a targeted UFO is on which suggest that the alien forces use hyperwaves to communicate.
• In the book A Fire Upon the Deep by Vernor Vinge, ultrawave is used as a method of faster-than-light travel in the Beyond, as well as a means of communication.
• The Cities in Flight series by James Blish featured both ultrawave and "Dirac" transmitters.