This generates radiation in all directions which has a distribute of wavelengths and no interrelationships between individual photons. This known as spontaneous emission. เลเซอร์ กำจัดไฝ ขี้แมลงวัน กระเนื้อ ติ่งเนื้อ และสิวหิน Consequently a partially reflecting mirror is put on both sides of your diode to lure the photons emitted from spontaneous emission. https://gracef072pyc8.azzablog.com/profile