In optics one usually deals with a source which emits light within a narrow, but nevertheless finite, frequency range . 在光学中,常常遇到的是这样的光源,它所发射的光频率范围虽窄,但仍有一定的宽度。
But oniy certain iight frequencies can hurt them 但是只有某种光频率可以伤害它们
Auras vibrate to different color , sound and light frequencies . the color spectrum varies with one ' s physical , emotional , mental , and spiritual states 光环由不同的颜色、声音、光频率振动而成。颜色光谱随着一个人的身体、情感、精神、精神状态而发生变化。
Those who are capable of holding this frequency of light anchor the vibration into earth and assist not only the earth herself , but also mankind in evolution 那些人能够保持这光频率振动锚定振动进入地球之内而且不仅协助地球她自己,并且人类也同样进化。
Laser system ' s stable condition and frequency function are gained by virtue of theoretical model of a three - mirror f - p cavity and semiconductor laser , and then the mathematical model of common self - mixing interference effect is established 由三镜f - p腔理论和半导体激光器性质得到系统的稳态条件和输出光频率的求解方程,从而建立了自混合干涉的数值模型。