如何激光工程激光眼科手術
What is a 激光? LASER stands for Light Amplification by Stimulated Emission of Radiation. The first word is a good starting point. 那個 激光 is a light. Not like a light in your room, but a kind of light. He qualities.Monochromaticity unique – a 激光 has a wavelength or color. A normal light bulb has a range of wavelengths.Directionality – 那個 激光 is a beam, which does not deviate. Compare a 激光 pointer with a regular flashlight.
