collimation
/ˌkɑlɪˈmeɪʃən/
noun
- The process of making rays of light or particles parallel, or the state of being aligned in an optical instrument.
- The technician checked the collimation of the laser before the experiment.
- Poor collimation can cause blurry photos in a camera lens.
- Proper collimation is essential for a clear image through the telescope.
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