9 times 10 to the 15 per second. So if you remember what the equation Balmer found was this number multiplied Balmer but just now starting from understanding the difference between energy levels.

等于3。29乘以10的15次方每秒,所以如果你们记得的话,找到的那个方程就是乘以了这个数，by，this，here。，So，，we，found，the，exact，same，equation，所以我们从理解不同能级之间,能量差出发找到了同样的方程。

youdao

Well, that is the difference between the equation with gravity and without gravity.

该差值即是存在重力,与不存在重力方程的解之差。

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We use finite difference method to solve electromagnetic wave equation.

采用有限差分方法，对波动方程求数值解。

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When you eliminate strong partisans on both sides of the aisle from the equation, that difference shrinks to just under 1-point (50-49).

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Equation of Time function at 9:00 that indicates the difference between solar time and real time.

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