Assertion: eyepiece's length | /r/HasProperty | negative
Facets:
value: for a diverging lens
type: PURPOSE
Source sentences:
text: (Remember that for a diverging lens the focal length is negative.)
text: The focal length is positive and the image orientation is negative and rotated (reduced, inverted and reverted).
text: Only if the focal length is negative, the image's height, distance and magnification are virtual and negative.
text: When the focal length is positive the image's height, distance and magnification are real and positive.