«We now know that star clusters have a rather continuous range of size and mass without any gaps in their properties,» Professor Forbes said. (keckobservatory.org)
The existence of hypothetical particles called magnetic monopoles would explain why electric charge comes in integer multiples of the charge of an electron instead of a continuous range of values, Emily Conover reported in «Magnets with a single pole are still giving physicists the slip» (SN: 2/3/18, p. 10). (sciencenews.org)
Only accelerated, unbound electrons produce such a continuous range of X - rays, says Petre. (discovermagazine.com)