實(shí)驗(yàn)次數(shù) | 鐵塊的質(zhì)量/g | 細(xì)繩長度/cm | 30個(gè)周期/s | 周期/s |
1 | 10 | 50 | 42.0 | 1.4 |
2 | 10 | 80 | 54.0 | 1.8 |
3 | 20 | 50 | 42.0 | 1.4 |
4 | 20 | 80 | 54.0 | 1.8 |
入射角α | 0° | 15° | 30° | 45° | 60° |
反射角β | 0° | 15° | 30° | 45° | 60° |
折射角γ | 0° | 11° | 22.1° | 35.4° | 40.9° |
實(shí)驗(yàn)次數(shù) | 1 | 2 | 3 | 4 |
lA/cm | 5.40 | 7.15 | 9.80 | 12.50 |
lB/cm | 5.20 | 6.96 | 9.61 | 12.32 |