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"That's not what I mean, captain. You are an old hand. This is your category and you must know it well. Then why are you signing up with Vacuum Tube Transport rather than Hovercraft?" Joe Mauser looked at him for a moment without speaking. "Come, come, captain. I am an old hand too, in my category, and not a fool.

A crystal detector can be used with or without a battery while the vacuum tube detector requires two small batteries. A tuning coil of the simplest kind consists of a single layer of copper wire wound on a cylinder with an adjustable, or sliding, contact, but for sharp tuning you need a loose coupled tuning coil.

"Huh! as for me," quickly responded Bandy-legs, "I'm expecting to do my share about slingin' together a dandy spread, with some of the fine grub we fetched along. This mountain air is something terrible when it comes to toning up jaded appetites. I feel as if I had a vacuum down about my middle all the time. I'm beginning to be alarmed about my condition.

A curious point is that the phenomenon occurs even if two filaments are mounted in a bulb, each being connected to one terminal of the coil, and, what is still more curious, if they be very near together, provided the vacuum be very high.

Long ago, by a close process of reasoning, he had clearly seen that the only road to it was through the path he had travelled, and which was now embodied in the philosophy of his incandescent lamp namely, a filament, or carbon, of high resistance and small radiating surface, sealed into a glass globe exhausted of air to a high degree of vacuum.

He set to work on a new electronic setup which would make still another modification of the Lawlor space-drive possible. In the others, groups of electronic components were cut out and others substituted in rather tricky fashion from the control board. This was trickiest of all. It required the home-made vacuum tube to burn steadily when in use. But it was a very simple idea.

To this disposition, already so prompt to form illusions to them, is also to be joined the force of habit; to a great number of men, it would he wresting from them a portion of themselves to take away their superstitious notions; it would be depriving them of an accustomed aliment; plunging them into a dreadful vacuum: obliging their distempered minds to perish for want of exercise.

"But you asked me some minutes since," said Constance, after a pause, "if the object of my pursuit was religion. I disappointed but not surprised you by my answer." "Yes: you grieved me, because, in your case, religion could alone fill the dreary vacuum of your time. For, with your enlarged and cultivated mind, you would not view the grandest of earthly questions in a narrow and sectarian light.

They were wearing vacuum suits and were very short and stocky, giving the impression of enormous strength. They brought an educator of their own with them and read the brains of the three men. Then they dropped the ship a few thousand feet and revived the three with a drink of something out of a flask." "Must have been different from the kind handled by most booties I know, then.

Shock plays, you see." "Then I have an idea," cried Helen. "We'll " "Do go on," appealed Brown. "Better give it to him," said Lloyd. "An idea, you know, is to some people a rare and valuable asset." "Not now. Perhaps later I may impart it," said Helen. "It would be a great kindness," said Brown humbly, "if you could let me have it soon." "Nature abhors a vacuum, you know," put in Lloyd.