He was a few years older than Dave, and more disposed to physics than to chemistry: the great discoveries of X-rays, radioactivity, the electron, and quantum theory had all occurred in his formative years.
The discovery of X-rays, radioactivity, and relativity led to a new kind of physics in which Helmholtz's achievements, although impressive, had little to offer the new generation.
But within the space of a decade, between 1895 and 1905, along came the discovery of X-rays, radioactivity, quantum theory and Einsteinian relativity, and physics was turned on its head.
New knowledge was developed about particles, rays, radioactivity, and the structures of the atom and the nucleus.
New knowledge was developed about particles and rays, radioactivity, and the structures of the atom and the nucleus.
Cosmic rays and radioactivity from the surrounding rock are the big bugaboos of dark matter experiments.
As with cathode rays and radioactivity a century ago, some false notes are emerging.
Exactly what an atom was remained to be determined, and there were a few puzzling discoveries, such as cathode rays and radioactivity.
There was however an intermediate period last century, when we scribbled by increasing random mutation rates aided by chemicals, UV radiation, X-rays and radioactivity in conjunction with the power of selection in applications such as plant/animal breeding and modification of microorganisms.
EXIST also traces cosmic star formation via gamma-ray bursts and gamma-ray lines from radioactivity ejected by supernovae and novae.
