Popular science essay by my side 500 words

Technology leads life.

On the afternoon of March 27th, all the students and teachers of the Youth Division listened to a unique and interesting robot lecture. Chief Engineer Wang of Murata Company introduced to us in detail the sensor principles of two new robots, Murata Naughty Boy and Murata Wantong, and showed us the strange functions of these two robots.

The advanced technology of the Murata Urchin robot developed by Murata is mainly focused on the sensors installed on it, and the most important ones are the three major sensors: ultrasonic sensor, gyroscope sensor, and vibration sensor. Through these technologies, it is possible to make the robot ride a bicycle with automatic obstacle detection, crossing a single-plank bridge and an S-beam balance beam, and extremely difficult "stop but not fall" and other interesting tricks.

Looking at the superb skills of Xiao Naughty and Xiao Wantong, there were bursts of exclamation and warm applause from the audience, which also made us experience the magic of sensor technology and its wide application prospects.

In the following 15 minutes of question time, the students were active in thinking, thinking positively, enthusiastically raising their hands to speak, and constantly throwing out one valuable question after another, and Chief Engineer Wang gave us detailed answers one by one.

I believe that in the near future, students will also be able to give full play to their wisdom and develop more exquisite and sensitive high-tech products, so that science and technology can lead our lives.

Snowflakes are beautiful crystals that cling together in clumps as they fall, forming snow flakes. The size of a single snowflake is usually between millimeters. Snowflakes are light, weighing only grams individually.

No matter how light and small the snowflakes are, how wonderful they are, its crystals are regular hexagonal shapes, so the ancients had the saying that "there are more than five flowers of plants and trees, and six snowflakes are produced". How beautiful and light the snowflakes are! I'm getting more and more fond of snowflakes, and it would be a pleasure to see the land covered with snow and the trees covered in silver again.

Ruixue Zhao Ant Sen Feng Nian" is a widely spread agricultural proverb in our country. In the north, a thick, loose layer of snow covers wheat like a quilt to keep the wheat warm. The nitrogen in the snow is easily absorbed and utilized by crops.

The low temperature of snow water can freeze the pests that overwinter on the surface, and it also brings benefits to agricultural production. Therefore, there is another agricultural proverb: "In winter, the wheat covers the three-layer quilt, and the next year sleeps with steamed buns." ”

Snow has a wide range of effects, but snow has great benefits for humans. First of all, it is conducive to the growth and development of crops. Because snow conducts heat very poorly, the soil surface is covered with a snow cover, which can reduce the transfer of soil heat and block the invasion of cold air on the snow surface, so the crops protected by snow can safely overwinter.

Snow cover also stores water for agricultural crops. In addition, snow increases the fertility of the soil. It has been determined that every 1 liter of snow water contains about grams of nitrogen.

When snow water penetrates the soil, nitrogen fertilizer is applied once. Feeding livestock and poultry with snow water and irrigating crops can yield significant benefits.

Snow is both good and bad, and in the middle of spring in March and April, there is a sudden cold wave that causes heavy snowfall. It will cause freezing cold. Therefore, the agricultural proverb says: "Wax snow is a treasure, and spring snow is not good." ”

Friends, after listening to my introduction, do you like and understand snow more?

Directly down to the face of the element, a simple confirmation of the element!! A lot of money once or twice Oreo amazing.