Assertion: telescope's length | /r/HasProperty | the distance
Facets:
value: from the primary lens
type: OTHER
value: between mirror
type: LOCATION
value: to the point
type: OTHER
value: between the telescope's primary lens
type: LOCATION
value: between the point
type: LOCATION
value: from mirror
type: OTHER
value: to the focal point
type: TRANSITIVE-OBJECT
value: between the focus
type: OTHER
value: between the objective
type: OTHER
value: from objective lens, for refractors
type: TRANSITIVE-OBJECT
value: to the image
type: OTHER
value: effectively
type: MANNER
Source sentences:
text: Every scope has a focal length, which is effectively the distance from the primary lens or mirror to the image it forms.
text: The other way uses a very long objective focal length (distance between the focus and the objective) to minimize the effect.
text: Generally expressed, focal length is the distance (given in millimeters) between the telescope's primary lens or mirror and the point where the light rays come together in focus.
text: the focal length is the distance from the telescope’s optic lens to the plane in which the image comes into focus.
text: focal length is the distance that the light in the telescope travels from the objective lens or mirror to the point where that light reaches focus (the focal plane).
text: The focal length of an eyepiece is the distance from the principal plane of the eyepiece where parallel rays of light converge to a single point.
text: Focus length is the distance between the centre of a lens and its focus.
text: There is another way which uses a very long objective focal length (which is the distance between the focus and the objective) to minimize the effect, This is why the early refracting telescopes were made very long.
text: A telescope’s focal length is the distance from the primary lens, or mirror, to the point where the light rays come together to focus and form an image.
text: Generally expressed, focal length is the distance (given in millimeters) between the telescope's primary lens or mirror and the point where the light rays come together in focus.
text: The focal length is the distance from the primary mirror (or objective lens, for refractors) to the focal point (which is also called the prime focus).
text: Focal length is the distance from the lens to the point where the telescope is in focus, and is measured in millimeters.