The magnetization of the nanoparticle can spontaneously change of orientation under the influence of thermal energy, a phenomenon called superparamagnetism.
Measurements however indicated that neutrinos spontaneously change flavour, which implies that neutrinos have a mass.
It can change spontaneously, independent of whether any signals are sent or not.
This species is remarkable in that it can spontaneously change its skin color, similar to the chameleon.
Taylor-Compton described her character as having "these bipolar moments", where her emotions are spontaneously changing from points of happiness to agitation.
Connections are difficult to complete and when calls do go through, lines often go dead without warning or change spontaneously into party lines.
At discrete time intervals, every cell spontaneously changes state based on its current state and the state of its two neighbors.
Past performance does not breed confidence that those institutions that are in trouble today will spontaneously change their ways once their debts are wiped out.
That is, at some point in time, an atom of such a nuclide will spontaneously change into a different nuclide by radioactive decay.
The arrangements spontaneously changed, minute by minute, without any apparent communication among the individual animals - like the transient weavings of a moire pattern.