THE spectra of helium and hydrogen have acquired considerable importance in view of the recent experimental researches of Prof. Fowler and the theoretical investigations of Dr. Bohr. Before the ...

For the first time, and contrary to popular belief, scientists measured the vibrational structure of hydrogen and helium atoms by X-rays. The results disprove the misconception that it’s impossible to ...

A Plot. According to Dr. Harrison E. Howe, Editor of Industrial and Engineering Chemistry, a “plot” is under way to divert public interest from helium. Asserting that electrical sparks twelve to ...

MR. E. J. EVANS has described recently some interesting experiments on the “4686” and Pickering series, which were obtained from vacuum tubes containing helium from which hydrogen was apparently ...