Radio beams transmitted from Earth have traveled at least 50 billion light years into space, he said, raising the possibility that other intelligent beings could already be alert to our existence.
32.
It is not enough to merely merge the light or radio beams; they must match each other's paths so precisely that their waves match, peak for peak and trough for trough.
33.
More generally, phase-difference couplers, together with fixed phase delays and antenna arrays, are used in beam-forming networks such as the Butler matrix, to create a radio beam in any prescribed direction.
34.
He was sent to inspect a site near Frankfurt, where the Germans had reputedly been experimenting with using directed high-energy radio beams as means of disabling the ignition systems of flying aircraft.
35.
The Operation Pinguin V-2 offensive began on 8 September 1944, when " Lehr-und Versuchsbatterie No . 444 " ( ) launched a single rocket guided by a radio beam directed at Paris.
36.
Even if another civilization is sending radio beams our way, he said, " We may look at the right place, in the right frequency _ right when they're having a coffee break.
37.
The Doctor convinced the Master that the Nestenes were too dangerous to be reliable allies, and they reversed the radio beam the invasion force was coming in on, sending it back into space.
38.
Vatican Radio beams the pope's words around the world from a forest of antennas in Santa Maria di Galeria, an area that was sparsely populated 50 years ago when the facility was opened.
39.
When a pilot makes a final approach for a landing, the plane must follow an imaginary line marked by a radio beam that controls the rate of descent and leads to the appropriate touchdown spot.
40.
-- A $ 60 million expansion of the electromagnetic compatibility center, where the automaker tests everything from cell phones to radio beams to make sure they don't interfere with a vehicle's computer or navigation systems.
