4/29/2023 0 Comments Soal dan jawaban cpns pdfThese beams can heat, melt, or vaporize material in a very precise way. In engineering, powerful laser beam can be focused on a small area. But apart from military uses, they have many applications in engineering, communications, medicine, and the art. Nowadays, they are used to identify targets. In the 1980s, the United States experimented with lasers as a defense against nuclear missiles. When lasers were invented in 1960, some people thought they could be used as ‘death rays’. They can be solid state, gas, semiconductor, or liquid. Lasers (Light Amplification by Stimulated Emission of Radiation) are devices which amplify light and produce beams of light which are very instance, directional, and pure in color.
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