A refracting telescope uses a lens instead of a mirror to focus the incoming light, relying on refraction rather than reflection to achieve its purpose. Refraction is the bending of a beam of light as it passes from one transparent medium (for example, air) into another (such as glass).
Game | Time | WPM | Accuracy |
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222 | 2017-01-30 05:46:50 | 76.72 | 90% |