1. Velcro

One day in 1948, the Swiss inventor George liked to take his dog out for a walk. One time when he came home from a walk, he found that his trouser legs and the dog were covered with Velcro. Full of grass seeds. Grass seeds stick to the dog's hair very well, and it takes some effort to pull them off. George felt very strange. He used his keen observation and used a magnifying glass to carefully observe the grass seeds.

Finally, he discovered that the fibers of grass seeds and dog hair were intertwined. He thought, if these two shapes were used, wouldn't it be possible to invent a buckle? Since then, people have had a good helper in their lives - Velcro invented by George.

2. Saw

When Lu Ban went into the mountains to cut down trees, he accidentally slipped and his hand was cut by a leaf of a weed, which oozed blood. He took off the leaves and touched them gently. It turned out that there were sharp teeth on both sides of the leaves. He used these dense teeth to lightly scratch the back of his hand, and actually made a cut. His hand was scratched by these small teeth.

Lu Ban also saw a large locust on a wild grass. The two large teeth were also lined with many small teeth, so they could grind the leaves quickly. Luban was inspired by these two things. So, after many experiments, he finally invented a sharp saw.

Lu Ban named this newly invented tool "saw". This is where the saw comes from.

3. Straws

The straw was invented by Marvin Stone in the United States in 1888. In the 19th century, Americans liked to drink cold light wine. To prevent the heat in the mouth from reducing the freezing effect of the wine, drink directly without using your mouth, but use hollow natural wheat straw to drink. However, natural wheat straw is easy to break, and its own flavor will also penetrate into the wine.

At that time, Marvin Stone, a cigarette manufacturer in the United States, got inspiration from cigarettes and made a paper straw. After trying it, it neither broke nor had any strange smell. Since then, people not only use straws when drinking light wine, but also like to use paper straws when drinking other cold drinks. Extended information

The main value of plants:

Thousands of plant species are planted to beautify the environment, provide shade, adjust temperature, reduce wind speed, reduce noise, and provide privacy and preventing soil erosion.

People will place cut flowers, dried flowers and indoor potted plants indoors, and outdoors they will set up lawns, shade trees, ornamental trees, shrubs, vines, perennial herbs and flower beds. The imagery of plants is usually used in Art, architecture, character, language, photography, textiles, coins, stamps, flags and armbands.

Art types of living plants include green sculptures, bonsais, flower arrangements and tree walls. Ornamental plants sometimes influence history, as in tulip mania.

Plants are the basis of a multi-billion dollar annual tourism industry, including trips to botanical gardens, historical parks, national principalities, tulip fields, rainforests and forests with colorful autumn foliage.

Baidu Encyclopedia - Velcro

Baidu Encyclopedia - Saw

Baidu Encyclopedia - Straw