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"You're an expert at carpenter work, Doughnuts," said Bob. "If you feel as ambitious as usual you can cut a couple of squares out of that oak plank over in the corner. We'll need them for end pieces to this condenser." "Oh, that will be lots of fun," said Jimmy, who had been casting longing glances toward the old sofa. "I'd a good deal rather saw some more wood than take it easy.
A. There is a vacuum above the water, the water being only like so much iron or lead lying at the bottom. Q. Is the vacuum in the condenser a perfect vacuum?
A. The pipe leading to the condenser from the cylinder is made somewhat bell mouthed where it joins the condenser, and the gland for compressing the packing is made of a larger internal diameter in every part except at the point at which the pipe emerges from it, where it accurately fits the pipe so as to enable the gland to squeeze the packing.
The capacity of a condenser in an overdrive field was different from that of a condenser out of it. The self-induction of a coil in an overdrive field was not the same as in normal space. Magnetic and gravitational fields also did not follow the same laws in stressed space as in unstressed extension. The speed of light was different. Inertia was different.
The cold water round the condenser will condense some of the steam contained in the eduction pipe, and its place will be supplied by some of the air from the cylinder. The steam valve must again be opened to blow out that air, and the operation is to be repeated until the air is all drawn out of the cylinder.
By this construction the gland may be drawn back without being jammed upon the enlarged part of the pipe; and the enlargement of the pipe toward the condenser prevents the air pump barrel from offering any impediment to the free egress of the steam.
Next connect a wire to the aerial between the variable condenser and the stator and connect this to one post of a .0005 microfarad fixed condenser, then connect the other post of this with the grid of the detector and shunt a 2 megohm grid leak around it.
Q. Is this imperfection of the vacuum wholly attributable to the vapor in the condenser? A. No; it is partly attributable to the presence of a small quantity of air which enters with the water, and which would accumulate until it destroyed the vacuum altogether but for the action of the air pump, which expels it with the water, as already explained.
When the waves set up oscillations in the primary of the tuning coil the energy of them produces like oscillations in the closed circuit which includes the secondary coil and the condenser; the alternating positive and negative voltages of these are impressed on the grid and these, as we have seen before, cause similar variations of the direct current from the B battery which acts on the plate and which flows between the latter and the filament.
Speaking of condensers, he said he had recently tried lead plates in water to get large capacities, but so far had not been successful. Mr. Swinburne, in replying, said he had not made a perfect condenser yet, for, although he had some which did not heat much, they made a great noise. He did not see how the rise of pressure observed by Mr. Ferranti and Mr. Kapp could be due to resonance. Mr.
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