Edwin Fitch Northrup

Intense interest has of late been aroused in the many striking phenomena connected with oscillatory currents. This interest was first awakened among professional electricians and physicists by the...

The high frequency apparatus, described above, is unquestionably the most powerful type of apparatus for the production of the X-rays. It has advantages over all other types of apparatus, such as...

In the circuits shown above the condensers have been considered as consisting of two or more sheets of metal separated a short distance from each other by insulating material. Any such condenser, even...

PRACTICAL HINTS FOR CONSTRUCTING OSCILLATOR. The chief and almost the sole difficulty encountered in the construction of efficient oscillatory current apparatus of reasonable size is in obtaining...