Assertion: capacitor | /r/HasProperty | the leyden jar
Facets:
Source sentences:
text: The first capacitor was the Leyden jar, invented at the Netherlands University in the 18th century.
text: Glass is at least 5 times more effective than air, which is why the earliest capacitors (Leyden jars, using ordinary glass as the dielectric) worked so well, but it's heavy, impractical, and hard to squeeze into small spaces.
text: The first capacitor was the Leyden jar, invented in 1745.