What are the mysterious props in Doraemon?

I think the weirdest props are bamboo dragonflies and enlarged flashlights. Among the magic weapons of Doraemon, the most commonly used props are those that are most impossible to realize with existing knowledge. It can only be said that people's imagination is very strong, or that it will be possible for centuries, but at least these props are really difficult to make with modern technology.

Bamboo dragonfly

This is definitely one of the most commonly used props, basically every episode will see the appearance of this product, but it can be said that it is really impossible to achieve with the current technology. If this can be done, human technology does not know how many years it will take. No matter how fast the bamboo dragonfly flies, it can only carry a child's weight of about 30 kilograms into the sky. Although this technology can be realized now, it can still be realized with the help of existing aircraft, but the current aircraft can only fly twenty or thirty meters, while bamboo dragonflies can fly hundreds of meters high.

And it seems that it can rise without relying on thrust at all, which is simply a manifestation of controlling gravity, and it can also control the direction with nerves. The most powerful thing is that it is small in size and can be assembled and disassembled at will. I believe that such props may not exist in hundreds of years.

Zoom in and out of the flashlight

Although seemingly simple, it is also a pillar that subverts all physical cognition. This obviously involves the laws of physics that everyone has learned in junior high school, such as mass = volume * density, energy conservation and other laws that have been verified for hundreds of years. On the premise of constant quality, the larger the volume, the smaller the density, and vice versa, but even the quality of this lamp can be changed, which is really shocking. It can be said that Conan, the destroyer, is omnipotent, and this cargo can rule the earth instantly. Of course, this is also impossible. After all, it gives all physics a new look.

Random gate

This is definitely the most imaginative prop, which can make the wormhole theory so simple and convenient to realize. That is to say, a door is just like a toy, and it can break through all the space restrictions with a simple swing. I immediately connected two different places in the same space seam, and really admired the author's imagination. If advanced technology becomes possible, Mars migration will not be a dream. Do you still need to throw detectors at Mars every day? Might as well study this door. So I think the weirdest props are bamboo dragonflies and enlarged flashlights.