Linked Questions

3
votes
2answers
1k views

How does the Moon cause the tides?

I am considering the following question, but I can't quite figure it out... I have looked up differential gravity, but I cannot derive the equation for the effect on Earth, and I haven't found any ...
-1
votes
2answers
81 views

Will an object orbiting a non-rotating mass with a layer of water on it cause two bulges of water on opposite sides of it? [duplicate]

Imagine a non-rotating spherical mass with a sea on its surface (somewhat like the earth, except for the rotating part). Around this mass is circling an object with a much smaller mass, but ...
17
votes
1answer
8k views

Why don't lakes have tides?

There's a tidal effect that we can clearly observe in oceans, which is the effect of gravity from the Sun and the Moon. If gravity affects everything equally, why don't lakes have tides?
8
votes
1answer
2k views

What is the reason of the semidiurnal pressure oscillation in the atmosphere?

It appears that in many (most) places on earth, a pressure oscillation of a 100-200 Pa takes place twice a day : that is, with maxima around 12AM and 12PM and minima around 6AM and 6PM. I've found ...
5
votes
1answer
159 views

Will extracting power from ocean tides affect the moon's orbit in the LONG run?

Conservation of energy says that any energy extracted from our ocean's tides would have to come from somewhere. Since these tides are a gravitational effect due to the moon, it would seem that the ...
5
votes
1answer
6k views

Conservation of angular momentum in Earth-Moon system

We all know about the fact that tidal friction is slowly slowing down the Earth's rotation about its axis, and that subsequently the Moon is slowly drifting away, in order for the angular momentum of ...
3
votes
1answer
832 views

What are the tidal effects of Io on Jupiter?

I recall reading an essay by Asimov (I think) around 1980 stating that the tides are a function of a power of the diameter of the primary, so (surprisingly) small close moons of Jupiter raise large ...
1
vote
1answer
1k views

How to calculate tide times?

How do I calculate the time of the tides at a given location? I'm not interested in the amplitude of the tides, just the times when they occur.
1
vote
1answer
370 views

Why are tidal forces pointing away from the Moon? [duplicate]

I am currently reading The Science of Insterstellar, which explains most things very well, but some things leave me confuzzled, which I hope to get answers to here. I am no physicist, but highly ...
0
votes
1answer
85 views

By which factors are tides and waves affected?

To my understanding, the tides and waves on Earth's oceans are caused by various factors such as the moon's gravity, the water cycle (rains, storms, evaporation), Earth's rotation, etc. Although the ...
0
votes
0answers
18 views

High tide variability [duplicate]

I thought I understood tides but both this page and a cross reference with another site confirms I do not. They say that high tide is 7 hours away and another part of the UK coast (less than a few ...
0
votes
0answers
97 views

Deriving the expression for the static equilibrium height of liquids under tidal force

I have tried looking at various sources and Wikipedia articles. I also checked some Q&As here at StackExchange but I couldn't quite grasp how the formula for the height of tides is derived when we ...
0
votes
0answers
151 views

Calculate Height of Ocean Tides if Earth Had a Larger/Smaller Radius

For context, I'm coming at this question from the Worldbuilding stackexchange, where I've posted a related question. I'm not a physicist or scientist by training, so if I make any glaring errors, ...
0
votes
0answers
21 views

Are the high tides always more unequal when the centre of gravity is within a planet?

In case of our high tides at both sides of the Earth it seems that they are almost equal. But is there a slight difference because the center of gravity is about 1,700 km below the surface of the ...
0
votes
0answers
27 views

Is this derivation for the development of two opposite two bulges of water due to the circling of two bodies around their CM right?

I tried it this way. Consider two equal spherical masses M, covered with a layer of water, circling around each other at a distance $l$ (measured between their centers). They have radius $R$ and ...

15 30 50 per page