A question about the Coriolis effect...

[Plotinus]

Even a tidally-locked planet still rotates. The moon is tidally locked to the earth, but it rotates. Tidal locking simply means that the body rotates at the same rate that it revolves. So the Coriolis effect is simply as strong as the speed of rotation. Whether tidal locking is present or not is irrelevant.

It often amuses me that people still believe the daft myth that the Coriolis effect determines the direction in which water swirls when leaving the bath - as if one side of the bath is significantly further from the equator than the other side! The Coriolis effect affects large systems such as hurricanes or ocean currents, but not little things like that - as I've been able to establish for myself, living in both Britain and New Zealand. There was of course an episode of "The Simpsons" that featured the Coriolis effect determining plughole direction (even, impossibly, suggesting that putting your hand in and swooshing the water the other way cannot overcome the mighty Coriolis effect) - but this episode also featured herbivorous frogs, suggesting that the show's scientific advisers had evidently gone completely on holiday that week!

 

[PlutonianEmpire]

@Perfection
And how would the extended day length affect the coriolis force (and subsequent weather patterns)?

 

[Perfection]

Even a tidally-locked planet still rotates. The moon is tidally locked to the earth, but it rotates. Tidal locking simply means that the body rotates at the same rate that it revolves. So the Coriolis effect is simply as strong as the speed of rotation. Whether tidal locking is present or not is irrelevant.

Unless it's a case of mutual tidal locking (which is what I was thinking of) then the dragging of space time around the star would alter the coordinate system making the effect of the Coriolis effect less.

However, in such case the velocity would have to increase and that might end up being a wash.

@Perfection
And how would the extended day length affect the coriolis force (and subsequent weather patterns)?

Because it rotates slower

 

[PlutonianEmpire]

What would the cloud patterns on such a planet look like from space?

 

[Babbler]

Even a tidally-locked planet still rotates. The moon is tidally locked to the earth, but it rotates. Tidal locking simply means that the body rotates at the same rate that it revolves. So the Coriolis effect is simply as strong as the speed of rotation. Whether tidal locking is present or not is irrelevant.

It often amuses me that people still believe the daft myth that the Coriolis effect determines the direction in which water swirls when leaving the bath - as if one side of the bath is significantly further from the equator than the other side! The Coriolis effect affects large systems such as hurricanes or ocean currents, but not little things like that - as I've been able to establish for myself, living in both Britain and New Zealand. There was of course an episode of "The Simpsons" that featured the Coriolis effect determining plughole direction (even, impossibly, suggesting that putting your hand in and swooshing the water the other way cannot overcome the mighty Coriolis effect) - but this episode also featured herbivorous frogs, suggesting that the show's scientific advisers had evidently gone completely on holiday that week!

The U.S. embassy in Australia, with its technological might, was able to make the toilets go the proper "American" way with a massive, power consuming machine. So your right, and Lisa is wrong.

 

[Perfection]

What would the cloud patterns on such a planet look like from space?

Well considering it's around such a funky ass star I have no idea.

 

[PlutonianEmpire]

The star I was talking about earlier is a RL star, name's Deneb.

Okay, put that planet in Earth's orbit around Sol instead. And add 2 earth-sized moons to the big planet, one with a 24-hour orbit, the other farther out in a 30-day orbit. Now what might the cloud patterns look like? Other than the fact that the tides would be a one-mile difference or something like that....

 

[Perfection]

The star I was talking about earlier is a RL star, name's Deneb.

Ah, your "bigger" was diametricaly, I thought you meant masswise. Makes a lot more sense that way.

Okay, put that planet in Earth's orbit around Sol instead. And add 2 earth-sized moons to the big planet, one with a 24-hour orbit, the other farther out in a 30-day orbit. Now what might the cloud patterns look like? Other than the fact that the tides would be a one-mile difference or something like that....

The Coriolis effect would remain practically identical.

 

[PlutonianEmpire]

So, it IS possible for a ultra-slow-spinning planet twice the size of earth to have equal coriolises, depending on the star?

Also, if a coriolis on one planet is weaker, in a hurricane, would the air flow more directly to/from the eye rather than running at 45* angle to the eye?

 

[Perfection]

Sorry, no, I was thinking that planet was just earth. If you put that planet from Deneb in it wouldn't be the same.

 

[PlutonianEmpire]

Because of the star being so different?

 

[Perfection]

No because rotates slower, just like why it was smaller when it was orbiting Deneb.

 

[punkbass2000]

The Coriolis effect affects large systems such as hurricanes or ocean currents, but not little things like that - as I've been able to establish for myself, living in both Britain and New Zealand.

Indeed. Even a controlled experiment conducted in both hemisphere's with a large basin and the plug mechanically removed from underneath, etc., the effect was barely noticeable. How you get out of the tub and so on will have far greater impact.

 

[PlutonianEmpire]

@Perfection
Direction of wind travel in northern hemisphere
Blue: Earth's coriolis
Sky Blue: Deneb's planet's coriolis.

Is this what it would kinda look like (assuming my planet spun forward)? If not, feel free to edit the image to what you see in your mind and repost.

 

[PlutonianEmpire]

Is it something like this for a planet (orbiting a sunlike star) with a rotation that is practically nonexistant:

Without Coriolis force to bend air currents into curves, the storm systems crossed directly from high- to low-pressure zones.

 

[stratego]

The coriolis effect is a component of acceleration.
Take a look at the picture, we have a rod, and a ball that can slide along the rod. When you rotate the rod, the ball would move along with the rod, but also slide up the rod. Its motion can be represented by how it rotates (e_theta) direction, or how it moves along the rod (er direction). Its acceleration measured in the e_theta direction is the coriolis effect.

Note:
r = distance of ball from rotating point
theta = angle
one dot on top = velocity/angular velocity
two dots on top = acceleration/angular acceleration.

 

[~Corsair#01~]

I'd imagine it's a reference to the fact that the Julii always seem to take Caralis early on. But it seems I'm wrong.

 

[PlutonianEmpire]

So, I assume that the planet below, orbiting Deneb, is unlikely to have this active a coriolis?