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critical angle 臨界角。

critical condition

The study of popular media embodies the understanding of survival condition of modem people and observation of cultural pulse . the article tries to probe into the nature of contemporary popular media , cultural value and aesthetical significance through cultural levels . critical angle and analysis of the media criticism theory and the four media of newspapers , broadcast , tv and internet . the article also ponders over the media problems appeared under the present cultural situation 本文試從文化的層面、批評的角度,通過對媒介批評理論的梳理,以及對報紙、廣播、電視、互聯網等四大媒介的剖析,來探詢當代大眾傳媒的本質屬性、文化價值和美學意義;并對當前特定文化語境下日漸凸顯的傳媒問題作一些思考。

This paper analyses the critical angle method that often use in focus detected . we receive two relations , the first relation between refractive index of the critical - angle prism and focus - error signal ; the second relation between numerical aperture of object lens and out - of - focus error signal 本文針對伺服系統中常用的調焦方法-臨界角方法進行了分析,理論上得到臨界角棱鏡的折射率、物鏡的數值孔徑與離焦誤差信號的關系。

According to the requirements of the cng on neutron flux , critical wavelength and distance between inpile guides and the cns , the relation between the source size and the critical angle of the coating material of the inpile guides as well as neutron flux at exit of the cngs have been studied 根據導管設計指標的需要,研究了冷源尺寸與堆內導管內壁鍍膜材料的全反射臨界角和導管系統出口處中子注量率的關系。

Studying the rule of the reflect - coefficient at the interface , simulating the seismic wave travel in the field beyond the critical angle , analyzing the wave polarity diversification , all the work provides a theory for the wide - angle reflection 通過研究反射系數在超臨界角部分的規律,模擬地震波在超臨界角的傳播,分析了地震波的極性變化,為廣角反射提供理論依據。

The theoretical expression of the critical angle is acquired , showing that it rises with the increase of the depth and period of modulation of refractive index . also , it increases as the beam width decreases 從理論上得到了該臨界角的表達式,它隨折射率調制周期、調制深度的增加而增大,且光束越窄臨界值越大。

The relative phase shift between s - and p - light is a function of the incident angle , and changes highly with the incident angle in the vicinity of the critical angle S光與p光的相對相位差是入射角的函數,當入射角在臨界角附近變化時,相對相位差會隨著入射角高靈敏度變化。

Before the angle is less than the critical angle , the reflect - coefficient is real number , when the angle reaches the critical angle , it is a complex number 入射角度到達臨界角時,波在界面發射全反射。此時,反射系數不再是實數,而是復數。

Reflection , refraction , snell ' s law , critical angle , brewster ' s angle , reflection and transmission coeffs 2 2反射,折射,司涅爾定律,極限角,全反射角,反射與穿透的交互作用。

Discussion on standard of critical angle of seismic wave in seismic analysis of complicated structures 復雜結構地震波輸入最不利方向標準問題

Critical angle of attack 臨界迎角

Those two critical angles constitute the double direction of his critical aesthetics 兩者構成批判美學的雙重方向。