The telescope has the ability to enlarge an image and depends on the combination of lenses used.
Explanation:
Eyepiece performs magnification. The size of primary lens or primary mirror determines the Light gathering power. The main functions of telescope are light gathering, resolution and magnification.
The light gathering power has the ability of a telescope to collect more light than human eye. The purpose of telescope is to focus photons.
Answer:When the image distance is positive, the image is on the same side of the mirror as the object, and it is real and inverted. When the image distance is negative, the image is behind the mirror, so the image is virtual and upright.
Explanation:
Answer:
C
Explanation:
Velocity is just speed with direction
Longitude was. Determining longitude requires knowing the exact time of day, which was difficult prior to modern clocks. The source book below tells the story of Englishman John Harrison's life-long pursuit of building a reliable clock and its importance to navigation.