Hasil (
Bahasa Indonesia) 1:
[Salinan]Disalin!
We first examine the effect of the gravitational force of the moon on the world’socean in Fig. 7.01. Here the earth and the moon are seen from above the northpole of the earth, and both are assumed to be stationary except for the earth’srotation. Also, the earth in this case has no continents but is covered with a uniformlayer of water. If the moon was not present, the oceans would cover the earth toa constant depth. The moon, however, exerts a gravitational attraction on eachparticle of water in the ocean and causes it to pile up under the moon. An observerat the equator at point O, rotating with the earth through the day, will notice thatthe depth of the ocean rises and falls once a day. The high tide will always beunder the moon and the low tide will be on the side opposite to the moon. Thiselementary model produces a tide but it is not a very good model because mostplaces on the earth usually have two high and two low tides during the day.
Sedang diterjemahkan, harap tunggu..
