Assertion: mercury's number | /r/AtLocation | sized column of mercury
Facets:
value: reasonably
type: MANNER
Source sentences:
text: The high speed of sound in mercury (1450 m/s) meant that the time needed to wait for a pulse to arrive at the receiving end was less than it would have been with a slower medium, such as air (343.2 m/s), but it also meant that the total number of pulses that could be stored in any reasonably sized column of mercury was limited.