"There was an old-fashioned way to make ozone...." When Hoddan nodded, a little surprised, the ambassador said: "By all means go ahead. You should be able to get parts from your room vision-receiver. I'll have some tools given you." Then he added: "Diplomacy has to understand the things that control events. Once it was social position. For a time it was weapons. Then it was commerce. Now it's technology. But I wonder how you'll use the ionization of air to protect yourself from kidnapers! Don't tell me! I'd rather try to guess."
He waved his hand in cordial dismissal and an Embassy servant showed Hoddan to his quarters. Ten minutes later another staff man brought him tools such as would be needed for work on a vision set. He was left alone.
He delicately disassembled the set in his room and began to put some of the parts together in a novel but wholly rational fashion. The science of electronics, like the science of mathematics, had progressed away beyond the point where all of it had practical applications. One could spend a lifetime learning things that research had discovered in the past, and industry had never found a use for. On Zan, industriously reading pirated books, Hoddan hadn't known where utility stopped. He'd kept on learning long after a practical man would have stopped studying to get a paying job.
Any electronic engineer could have made the device he now assembled. It only needed to be wanted—and apparently he was the first person to want it. In this respect it was like the receptor that had gotten him into trouble. But as he put the small parts together, he felt a certain loneliness. A man Hoddan's age needs to have some girl admire him from time to time. If Nedda had been sitting cross-legged before him, listening raptly while he explained, Hoddan would probably have been perfectly happy. But she wasn't. It wasn't likely she ever would be. Hoddan scowled.
Inside of an hour he'd made a hand-sized, five-watt, wave-guide projector of waves of eccentric form. In the beam of that projector, air became ionized. Air became a high-resistance conductor comparable to nichrome wire, when and where the projector sent its microwaves.
He was wrapping tape about the pistol grip when a servant brought him a scribbled note. It had been handed in at the Embassy gate by a woman who fled after leaving it. It looked like Nedda's handwriting. It read like Nedda's phrasing. It appeared to have been written by somebody in a highly emotional state. But it wasn't quite—not absolutely—convincing.
He went to find the ambassador. He handed over the note. The ambassador read it and raised his eyebrows.
"Well?"
"It could be authentic," admitted Hoddan.