Assertion: eyepiece's length | /r/CapableOf | determine the magnification
Facets:
value: in use
type: OTHER
Source sentences:
text: When in use, the focal length of an eyepiece, combined with the focal length of the telescope or microscope objective, to which it is attached, determines the magnification.
text: The focal length of an eyepiece, along with the focal length of the telescope the eyepiece is used with, determines the magnification the combination provides.
text: The focal length of an eyepiece is stated in millimeters and determines the magnification that eyepiece provides with any particular telescope.