Invaders from the Infinite by John W. Campbell (well read books .txt) 📕

as the space defense. It works both ways. We can’t send through it but neither can they. Anything we use that attacks them, attacks it, and so destroys it⁠—and it fights.”

“We’re worse off than ever!” said Morey gloomily.

“My friend, you, too, are tired. Sleep, sleep soundly, sleep till I call⁠—sleep!” And Morey slept under Zezdon Afthen’s will, till Torlos carried him gently to his room. Then Afthen let the sleep relax to a natural one. Wade decided he might as well follow under his own power, for now he knew he was tired, and could not overcome Zezdon Afthen, who was not.

On Thett, the fort was undestroyed, and now floating on its power units in a sea of blazing lava. Within, men were working quickly to install a second set of the new tubes in the molecular motion ray screen, and other men were transmitting the orders of the Sthanto who had come here as the place of actually greatest safety.

“Order all battleships to the nearest power-feed station, and command that all power available be transmitted to the station attacked. I believe it will be this one. There is no limit on the power transmission lines, and we need all possible power,” he commanded his son, now in charge of all land and spatial forces.

“And Ranstud, what happened to that molecular ray screen?”

“I do not know. I cannot understand such power.

“But what most worries me is his wall of darkness,” said Ranstud seriously.

“But he was forced to retire for all his wall of darkness, as you saw.

“He can maintain it but a short time, and it was full of holes when he fled.”

“Old Sthanto is much too confident, I believe,” said an assistant working at one of the great boards in the enemy’s fort, to one of his friends. “And I think he has lost his science-knowledge. Any power-man could tell what happened. They tried to use their own big rays against us, and their screen stopped them from going out, just as it stopped ours on the way in. Ours had been working at it for seconds, and hadn’t bothered them. Then for a bare instant their ray touched it⁠—and they retired. That shield of blackness is absolutely new.”

“They have many men on that ship of theirs,” replied his friend, helping to lift the three hundred ton load of a vacuum tube into place, “for it is evident that they built new apparatus, and it is evident their ship was increased in size to contain it. Also the nose was repaired. They probably worked under a time field, for they accomplished an impossible amount of work in the period they were gone.”

Ranstud had come up behind them, and overheard the later part of this conversation. “And what,” he asked suddenly, “did your meters tell you when our ray opened his ship?”

“Councilor of Science-wisdom, they told us that our power diminished, and our generators gave off but little power when his power was exceedingly little, we still had much.”

“Have you heard the myth of the source of his power, in the story that he gets it from all the stars of the Island?”

“We have, Great Councilor. And I for one believe it, for he sucked the power from our generators. So might he suck the power from the inconceivably greater generators of the Suns. I believe that we should treat with them, for if they be like the peace-loving fools of Venone, we might win a respite in which to learn their secret.”

Ranstud walked away slowly. He agreed, in his heart, but he loved life too well to tell the Sthanto what to do, and he had no intention of sacrificing himself for the possible good of the race.

So they prepared for another attack of the Thought, and waited.

XXVI Man, Creator and Destroyer

“What we must find,” said Arcot, between contented puffs, for he had slept well, and his breakfast had been good, “is some weapon which will attack them, but won’t attack us. The question is, what is it? And I think, I think⁠—I know.” His eyes were dreamy, his thoughts so cryptically abbreviated that not even Morey could follow them.

“Fine⁠—what is it?” asked Morey after vainly striving to deduce some sense from the formulas that were chasing through Arcot’s thoughts. Here and there he recognized them: Einstein’s energy formula, Planck’s quantum formulas, Nitsu Thansi’s electron interference formulas, Stebkowfski’s proton interference, Williamson’s electric field, and his own formulas appeared, and others so abbreviated he could not recognize them.

“Do you remember what Dad said about the way the Thessians made the giant forts out in space⁠—hauled matter from the moon and transformed it to lux and relux. Remember, I said then I thought it might be a ray⁠—but found it wasn’t what I thought? I want to to use the ray I was thinking of. The only question in my mind is⁠—what is going to happen to us when I use it?”

“What’s the ray?”

“Why is it, Morey, that an electron falls through the different quantum energy levels, falls successively lower and lower till it reaches its ‘lowest energy level,’ and can radiate no more. Why can’t it fill another step, and reach the proton? Why has it no more quanta to release? We know that electrons tend to fall always to lower energy level orbits. Why do they stop?”

“And,” said Morey, his own eyes dreamily bright now, “what would happen if it did? If it fell all the way?”

“I cannot follow your thoughts, Earthmen, beyond a glimpse of an explosion. And it seems it is Thett that is exploding, and that Thett is exploding itself. Can you explain?” asked Stel Felso Theu.

“Perhaps⁠—you know that electrons in their planetary orbits, so called, tend to fall away to orbits of lower energy, till they reach the lowest energy orbit, and remain fixed till more energy comes and is absorbed, driving them out again. Now we want to know why they don’t fall lower, fall all the