Principle and manufacturing method of tumbler

The "tumbler" invented in the Tang Dynasty is also called "catching drunken immortals" and "drinking whiskers". Originally, it was a wine exhorter, which was often placed on the wine table and rotated. When it stops, the person it refers to wants to have a drink.

It contains scientific principles. When designing, the center of gravity is located at the bottom near the center. This design makes the tumbler quickly return to the position where the center of gravity is closest to the ground and vertically downward after being stressed.

Cai Qing Guo Lin has a poem:

Don't laugh at an old man, his heel is uncertain. I bent my head. I am proud of myself.

A child as stubborn as a puppet. I just want to avoid the current disaster, so I don't want to bow my head on the spot.

The making method of the tumbler can be divided into the following steps.

(1) Find a circular object and remove the upper part, so that the center of gravity of this object will shrink to the center of the semicircle. If it is hollow, such as table tennis, it needs to be filled with some heavy objects.

(2) Put a conical hollow cylinder on it to make it look big.

(3) Draw human figures on the conical hollow cylinder, such as the old man and the sesame official.

Scientific experiments need people to collect more materials at ordinary times. Prepare more small tool boxes at home to clean up the old things and wastes generated in daily life and use them for experiments. Such as mineral water bottles and screws.

The upgraded tumbler needs to add acousto-optic electromagnetism to make it shine and sing when it moves. In addition, the spring can also enhance the entertainment value of the tumbler, so that it has a body that can shake up and down. Isn't this tumbler more fun?

Around: A Probe into the Font of High Score in Students' Composition

What is a "high score font"? Iron-painted silver hooks, dragons and snakes flying, naturally belong to high-scoring fonts. But for students with average calligraphy level, it is actually difficult for them to write more beautiful words in a short time. In other words, high-scoring fonts don't necessarily require a high level of calligraphy, but we must pay attention to standardization: First, don't break the silk between words, try to write a box for each word; Second, the font should be slightly larger, and it can be written on the line, with the width in the middle and the height of 2/3 (or in the middle). Third, use some force to ensure that you can see the test paper clearly after scanning.

In addition to using high-scoring fonts, high-scoring compositions need to have several highlights or depths, see the essence through phenomena, and win with ideas; Or have money, be good at accumulating, and win by things; Or literary talent, winning by language, such as being able to use a variety of rhetorical devices flexibly; Still creative, surprise.