What is an non-astronomical example of retrograde motion?

What is an non-astronomical example of retrograde motion? I really can't think of anything besides just planets.What is an non-astronomical example of retrograde motion?Of course you cannot think of an astronomical example. It is a term that is specially defined for astronomy.

But, the example I can give that will kind of get the idea across to you, in terms of understanding what the term means when used in astronomy, would be the following song (Hiryu Sandan Gaeshi/Isama Goma = the leaping dragon/the galloping horse) as performed by San Francisco Taiko Dojo.

Here is sort of an example that I can give:
http://www.youtube.com/watch?v=Fid6ttQTq鈥?/a>

Scroll to 2:10 to see the verse I am trying to depict.

See how the drummers spin opposite the direction that they orbit their drums? Do you see that?

It is very difficult to explain how to do the choreography of this, because people (self-included, when I first learned it) want to know like "do we go counterclockwise or clockwise?", when in reality, you really need to define what you mean by "go", because the answer is actually both.

In this particular video:
The stage-left drummers initially spin clockwise, and orbit counterclockwise.
The stage-right drummers initially spin counterclockwise, and orbit clockwise.

It is all done to create an interesting visual effect for the audience.

On their return, they do the opposite for both:
The stage-left drummers return spinning counterclockwise, and orbiting clockwise.
The stage-right drummers return spinning clockwise, and orbiting counterclockwise.

Additionally, at 3:52, you can see another maneuver that is in retrograde. It is a very quick jump, so watch carefully.


At 5:25, it was originally choreographed that they repeat the same move as at 3:52, but as you can see, the drummers are getting tired, and I certainly don't blame them, as I admit it is a very physically demanding song to perform. The drummers either forgot, or planned to forget, to do the retrograde jump, and do an easier prograde jump as an alternative.

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Now, at 2:34, you will see an example of prograde spin and orbit. In fact, this is a special case of prograde spin and orbit, an example of synchronous rotation, like what Earth's moon does as it progresses around Earth...always making the same face at us.

In the video, you see the drummers (for this verse) are both spinning and orbiting in the same direction. Because it is a special case where the rotation rate equals the orbit rate, the drummers always face their drum, as they orbit around it.What is an non-astronomical example of retrograde motion?Retrograde motion is nothing more than apparent motion being the reverse of actual motion, and is caused (in astronomical terms) by Earth 'overtaking' the outer planets as we orbit faster.



A non-astronomical example would be overtaking a car. From your point of view, the car you are overtaking appears to move backwards past you, even though it is of course actually moving in the same direction as you.What is an non-astronomical example of retrograde motion?Retrograde motions are relative term in astronomy for observing the planets against Zodiac background.

You may compare it with relative motions in many entertainment sp Roller coasters.

Or suppose you are driving a car with similar and equal speed of your friends car, but when you increase the speed of your car, the friend's car is seen going behind.