The light-collecting surface of the 140-meter telescope will be 25 times larger than that of the Keck II telescope, which stands at 10 metres. A telescope is a tool for observing far-off objects through their radiation.
electromagnetic radiation's absorption or reflection. originally exclusively referring to an optical device that observes far-off objects using lenses, curved mirrors, or a combination of the two. A telescope's capacity to focus is referred to as its " light-collecting function." a telescope's capacity to simultaneously focus on several objects.
A 140-meter telescope's 50-meter light-collecting diameter.
A 10-meter telescope has a 10-meter diameter for light gathering.
Pi*(D^2)/4 is the formula for a telescope's light-collecting area.
Light collecting area ratio = (pi*(140^2)/4)/pi*(100)/4 = 25
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