Introduction to a new technology 500 words, essay on Introducing a new technology .

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Ahhhh

Why is the trunk round.

In the process of observing nature, I stumbled upon the shape of tree trunks that are almost round—empty cones. Why is the trunk conical? What are the benefits of a conical trunk?

In order to explore these questions, I conducted more in-depth observation, analysis and research. With the help of my tutor, I looked up the information and learned that the stem of the plant has the role of supporting the plant body, transporting water and other nutrients. The stems of trees are mainly made up of vascular bundles.

Although the stems of woody plants will thicken year by year, the number of wood fibers of the stems is certain within a certain time range, that is, the cross-sectional area of the tree stems is certain. Then, we designed an experiment around a certain cross-sectional area of the trunk, assuming that the cross-section of the trunk grows into different shapes, to explore the reasons and advantages of the conical shape of the trunk. After experimentation, we found that:

1) When the cross-sectional area and length are constant, the longitudinal support force of the triangular prism object is the largest, and the transverse bearing force is the smallest; The longitudinal support force of cylindrical objects is not as good as that of triangular prism objects, but the transverse bearing force is the largest; (2) Trunks of different shapes of equal mass, with short cone-shaped trunks bearing the greatest wind force; (3) Wind is a natural phenomenon that affects the shape of the cross-section of trees and the height of tree growth. The trunk is almost conical, with a low center of gravity, and with a large root system connected to the earth, the center of gravity is lowered lower and the stability is greater; (4) The trunk has a circular cross-section, which can reduce damage, has stronger mechanical strength, and can withstand the attack of wind. At the same time, due to the influence of wind, the degree of bending of the trunk is similar, regardless of the direction from which the wind comes from, the resistance of the trunk is similar, and the trunk is not easily damaged.

The above experiments reflect the laws of nature and the enlightenment of nature: (1) a columnar object with a triangular cross-section has the largest longitudinal support force, and its form can be used in construction, such as angle steel; (2) The cross-section is a circular circular object, which has the greatest lateral bearing force, and similar forms of building materials can be seen everywhere, such as TV towers, telephone poles, etc. In the process of observation, experimentation and analysis, I gradually explained and revealed the mystery of the conical shape of the trunk, increased my knowledge, and applied the knowledge I learned in connection with practice, which not only consolidated the knowledge I learned, but also improved my interest in learning, and I also learned to observe and analyze scientifically.