Assertion: actinium's number | /r/HasProperty | high
Facets:
Source sentences:
text: They emit energetic particles which excite air (which is mostly nitrogen+oxygen), and the number of excitations per second is so high that we can see blue light due to electronic transitions in air molecules.
text: They emit energetic particles which excite air (which is mostly nitrogen+oxygen), and the number of excitations per second is so high that we can see blue light due to electronic transitions in air molecules.