| 1. | Wave speed equals frequency times wavelength .
波速等于频率乘以波长。 |
| 2. | That is, light of all wavelengths is present .
就是说，各种波长的光都存在。 |
| 3. | The opacity is a function of temperature and wavelength .
暗度是温度与波长的函数。 |
| 4. | Such wave fronts are separated from one another by one-half wavelength .
这种波阵面彼此间隔半个波长。 |
| 5. | Stars emit light which contains only certain characteristic wavelengths .
恒星发出的光只含有特定的波长。 |
| 6. | Sectors of it represent corresponding fractions of a wavelength .
它的各个弧段则代表一个波长的相应分数。 |
| 7. | Infrared radiation has wavelengths longer than those of visible light .
红外辐射的波长比可见光的波长长。 |
| 8. | The energy of the photon gives its color, or wavelength .
光子的能量决定了光子的颜色，也就决定了它的波长。 |
| 9. | A particular spectrum line corresponds to a certain definite light wavelength .
某特定的谱线就代表一个确定光的波长。 |
| 10. | One filter usually suffices for the entire visible range of wavelengths .
一个滤波器通常能满足整个光波可见范围的需要。 |
