Assertion: gravity's mass | /r/HasProperty | raised to a height of 1 meter
Facets:
Source sentences:
text: Even a relatively large mass of 10 kg, when raised to a height of 1 meter, produces a maximum available energy of only about 98 joules; dividing by a desired illumination time of just 5 minutes would return a usable power of only 0.32 watts.