Transactions of the American Roentgen Ray Society (Volume 6) (Paperback)

Transactions of the American Roentgen Ray Society (Volume 6) Book Description

This historic book may have numerous typos, missing text or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1905. Not illustrated. Excerpt: ... the average, as the variations adapting it to the individual case depend upon that inexpressible judgment that is founded upon experience. A closer approximation to the actual technic is now possible, because new devices have been invented for measuring the efficiency of apparatus, and the amount of energy passing through the tube while in operation. This instrument is a milliamperemeter that can be placed in the circuit with the tube. The development of an instrument that will measure the volume of current energizing a rontgen tube has been the endeavor of many. It has been accomplished in this country by Mr. H. C. Snook, of Philadelphia, a member of this society, and in Paris, by the firm of Gaiffe. These instruments are constructed on entirely different principles. The American has the advantage. It is not a hot-wire instrument, and measures the inductive energy instead of the heat equivalent. The hot-wire instrument has the disadvantage of measuring the direct and inverse discharge as one. It cannot detect the inverse discharge or measure the direct discharge alone. The American instrument measures the volume by measuring its power of induction. With it in circuit with the tube, with constant primary circuit conditions, any variation in the vacuum of the tube is indicated by a gradual movement of the index to the right or left. This is because the lower vacuum has less resistance and permits more current to pass through the tube, while a rise in vacuum increases the resistance and decreases the amount of current flowing. A rapid return movement indicates inverse discharge, and detects it immediately. If the principle of the conversion of energy is adhered to, the volume of rontgen discharge from a Crookes vacuum must be commensurate with the amount of energy...

Book Details

Customer Reviews : Transactions of the American Roentgen Ray Society (Volume 6)

Be the first one to review this product!

Have you used this product?

    

Discussion : Transactions of the American Roentgen Ray Society (Volume 6)