Assertion: ion's electron | /r/HasProperty | emitted
Facets:
value: from atoms
type: OTHER
value: from a hollow tube
type: OTHER
Source sentences:
text: When the ion engine is running, electrons are emitted from a hollow tube called a cathode.
text: However, in 1905 Albert Einstein took Planck's black body model to produce his solution to another outstanding problem of the day: the photoelectric effect, wherein electrons are emitted from atoms when they absorb energy from light.