7.1 Eyes and Cameras: Everyday Light Sensors . How does a lens form an image? The lens of an eye acts much like a simple glass lens. Light rays that enter the lens farther from the center are bent more, and rays that pass directly through the center are not bent at all. In this way, parallel rays of light, such as the light from a distant star, converge to a point called the focus (Figure 7.2a). If you have perfect vision, the focus of your lens is on your retina. That is why distant stars appear as points of light to our eyes or on photographs. h Which is better, an angular resolution of 1° or of 2°? Aan angular resolution of 1° 7.2 Telescopes: Giant Eyes . What's the difference between a refracting telescope and a reflecting telescope? A refracting telescope operates more like an eye, using transparent glass lenses to focus the light from distant objects A reflecting telescope uses a precisely curved primary mirror to gather and focus light.This mirror focuses light at the prime focus
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