FASTER THAN LIGHT!
"But what can be done with it?" asked Cochrane practically.
"Nothing " said Jones succinctly. "It changes the properties of space, but that's all. Can you think of any use for a faster-than-light radiation-pipe? I can't."
Cochrane cocked an eye at Jamison, who could extrapolate at the drop of an equation. But Jamison shook his head.
"Communication between planets " he said morosely, "when we get to them. Chats between sweethearts on Earth and Pluto. Broadcasts to the stars when we find that another one's set up a similar plate and is ready to chat with us. There's nothing else."