Second critical angle 第二临界角 ; 第二类临界角
first critical angle 第一临界角
critical angle refractomenter 临界角折射计
critical angle of incidence 临界入射角
critical angle of beam 吊杆临界仰角
critical angle refractometry 临界角测折射率术
Total Reflection Critical Angle 此称为全反射临界角
critical angle refractometer [光] 临界角折射计
So it's past the critical angle; the angle is smaller.
它超过了临界角;,角度变小。
We will do that later until it starts to slip and then at that critical angle that it starts to slip you have a value for mu of s for the static friction coefficient.
增加倾斜度直到物体开始下滑,然后记住开始下滑时的角度值,通过公式就能求出,静摩擦系数μ静。
but remember, we set it at the critical angle, so that cotangent alpha is 2 mu.
,但是记住，摆放的恰是临界角，所以cotα等于2μ
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