Professor John Trowbridge delivered a lecture last night in the Jefferson Physical Laboratory, under the auspices of the Engineering Society, on "Cathode Rays." The large lecture room was filled to ...

Professor Trowbridge's experiments with the cathode rays at the Jefferson Physical Laboratory have shown that the quality of glass constituting the Crookes tubes has very little to do with the ...

IN the course of some experiments upon the light-sensitive properties of selenium, evidence has been obtained by me of what appears to be a direct action of cathode rays upon the grey crystalline form ...

The members of the Franklin Institute of Philadelphia took their seats for their annual meeting last week in an atmosphere of ill-concealed excitement. Weeks before, the committee on awards had ...

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