This document summarizes the Texas STaR Chart ratings for J.L. Long Middle School from 2006-2009. It shows that the school has made progress in some areas like infrastructure and educator preparation, rating them as developing or advanced technology. However, areas like teaching and learning and leadership are still developing. The campus strengths are the technology workshops offered to educators, but goals and required hours do not reflect much focus on technology. Barriers to progress include lack of technology skills and confidence among teachers and budget issues restricting infrastructure growth. The conclusion calls for greatly improving the technology landscape to meet 2020 goals for preparing students as 21st century learners.
This document summarizes the Texas STaR Chart ratings for J.L. Long Middle School from 2006-2009. It shows that the school has made progress in some areas like infrastructure and educator preparation, rating them as developing or advanced technology. However, areas like teaching and learning and leadership are still developing. The campus strengths are the technology workshops offered to educators, but goals and required hours do not reflect much focus on technology. Barriers to progress include lack of technology skills and confidence among teachers and budget issues restricting infrastructure growth. The conclusion calls for greatly improving the technology landscape to meet 2020 goals for preparing students as 21st century learners.
7. Gauss’s Law - Electric and Magnetic Both the E and B fields like each other and obey the energy conservation law. The total field going into is equal to the total field getting out
19. 3 、各向异性介质: 各向同性介质: ( x , y , z )、 ( x , y , z ) 、 ( x , y , z )是标量; 各向异性介质: ( x , y , z )、 ( x , y , z ) 、 ( x , y , z )是张量; D 与 E 、 B 与 H 、 J 与 E 方向不同。
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21. 从 Maxwell 方程到波动方程 在无限大均匀介质中, =常数, =常数,并且不存在自由电荷和传导电流 (p = o , j = o ,透明 ) 。 第三式的旋度代入四式,
40. 例:单色平面波频率为: 6x10 14 Hz ,真空中沿 xy 面内传播;某时刻波场的相位差 2 的等相位线如图,已知 x 方向等相位线间隔 1 m ,求: 1 、传播方向空间频率; 2 、 x , y 方向空间频率值; 3 、传播方向与 x , y 方向夹角。 解: 1 、 2 、 3 、 x y