DETAILS, FICTION AND เลเซอร์

Lasers can even have higher temporal coherence, which permits them to emit mild with an exceptionally slim frequency spectrum. Temporal coherence may also be employed to create ultrashort pulses of light having a wide spectrum but durations as short being an attosecond.[seven]ไม่ต้องพักฟื้นนาน: การทำเ�