Assertion: atom's electron | /r/AtLocation | denser air
Facets:
value: normally
type: DEGREE
value: at lower altitudes
type: LOCATION
Source sentences:
text: The explosion releases a blast of gamma rays into the mid-stratosphere, which ionizes as a secondary effect and the resultant energetic free electrons interact with the Earth's magnetic field to produce a much stronger EMP than is normally produced in the denser air at lower altitudes.