Diurnal has 3 syllables and the stress is on the second syllable.
| # | Sentence | |
|---|---|---|
| 1. | The net gravitational field at any point on the surface of the earth is the sum of the gravitational fields of all the masses in the universe; hence it displays diurnal and seasonal variations and variations with the phases of the moon and Jupiter; and those variations vary with latitude: if you live far from the poles, you weigh more at night. |