Assertion: silicate glass | /r/HasProperty | prepared by cooling
Facets:
value: over a comparable temperature drop
type: OTHER
value: in enormous contrast to this
type: MANNER
Source sentences:
text: In enormous contrast to this, the silicate glass that forms the rigid ribbed disk of the Hale telescope of the Palomar Observatory near San Diego, Calif., was prepared by cooling (over a comparable temperature drop) during a time interval of eight months.