มีประสิทธิภาพการแปลงค่าพลังงานที่ดี Lasers are characterised In line with their wavelength in a vacuum. Most "solitary wavelength" lasers make radiation in numerous modes with somewhat distinctive wavelengths. Though temporal coherence implies some diploma of monochromaticity, some lasers emit a wide spectrum of sunshine or emit distinctive wavelengths of sunshine concurrently. ถาม: เ... https://conant641hlo3.blogsidea.com/profile