The Physics of Origami: Can It Be Applied to Playing Cards?

[sk8bordgeek]

I came across this piece of origami a while back and was wondering about the physics behind it. When dropped, it always lands face up. http://youtube.com/watch?v=_ZszGCK4R54" Can the same principle be applied to a playing card (I'm a magician).

 

[Crosson]

The origami works best when the three "points" are crimped so as to be asymmetric; then it is very unstable when it is "upside-down", either way it will be totally stable when it is "face-up".

It is more difficult to do this with a playing card, because you have to crip all four corners in an asymmetric way.

 

[sir-pinski]

As a physics enthusiast, I find the concept of applying the principles of origami to playing cards quite intriguing. The video you shared is a perfect example of the fascinating physics behind origami. The main principle at play here is the conservation of angular momentum.

When an object is dropped, it gains potential energy due to its height above the ground. As it falls, this potential energy is converted into kinetic energy. However, the law of conservation of angular momentum states that in the absence of external forces, the total angular momentum of a system remains constant. In simpler terms, this means that the spinning motion of an object will remain constant unless acted upon by an external force.

In the case of the origami piece in the video, the paper is folded in such a way that it creates a rotating motion as it falls. This motion, combined with the air resistance, helps to slow down the fall and keep the paper in a horizontal position, thus landing face up.

Now, can the same principle be applied to a playing card? The answer is yes, to some extent. Playing cards are much thinner and lighter than a piece of paper, so they are more susceptible to external forces such as air resistance and imperfections in the surface they are dropped on. However, by carefully folding and manipulating the card, it is possible to create a similar spinning motion that can increase the chances of it landing face up.

As a magician, you can use this understanding of physics to your advantage. By incorporating precise folds and manipulations into your card tricks, you can increase the chances of a desired outcome, such as landing a card face up. This adds an element of surprise and wonder to your performances, making them even more impressive.

In conclusion, the physics of origami can certainly be applied to playing cards, although with some limitations. It just goes to show how the principles of science can be found in the most unexpected places, and how they can even enhance our everyday activities and hobbies.