What practical tools and machinery are made of meteorological knowledge?

A hot air balloon is an aircraft lighter than air, with an atmospheric sphere on the upper part and a hanging basket on the lower part. Air is heated inside the balloon, and the air density is lower than that of cold air outside, which plays a role in buoyancy and displaces the whole body; Hanging baskets can carry passengers and heat sources (mostly open flames). Modern sports balloons are usually made of nylon fabric and the opening is made of refractory material.

2. Kongming Lantern

According to legend, in the Five Dynasties (907-960 AD), there was a woman named Xin Abandoned Mother. When she was fighting with her husband in Fujian, she made a box with bamboo sticks, pasted paper on it and made a headlight. Burning turpentine was placed on the chassis, and the lamp was blown into the sky by hot air as a military contact signal. This kind of resin lamp is called Kongming Lantern in Sichuan. According to legend, this kind of lantern looks like a hat worn by Zhuge Liang, hence the name Kongming Lantern.

3. Lantern

A candle is lit in the lamp, and the heat generated by the candle causes airflow and makes the axle rotate. There is paper-cut on the axle, and the shadow of paper-cut is projected on the screen by candlelight, and the image keeps moving. Because there are many pictures of ancient military commanders riding horses on all sides of the lamp, it seems that several people are chasing it when the lamp rotates, so it is named lantern. The candle in the lantern needs to be cut into small pieces. When you put it in a lantern, you should put it straight and never put it sideways.

Step 4 steam steamed bread

Steamed steamed bread uses the principle of rising hot air. Steamed steamed bread is a traditional pastry snack made with flour as the main raw material, which is a common practice of filling the warehouse. Make the fermented dough into steamed bread and steam it in a pot or steamer.

5. bonfire

Beacon is an important means of military communication in ancient frontier defense, and lighting it indicates the emergence of national war. Beacon towers built on the border in ancient times usually put dry wood on the stage, and when there is an enemy situation, they will ignite and give an alarm-quickly transmit information through bonfires between peaks; In ancient times, there was an allusion that Zhou Youwang laughed it off, played a vassal war and broke his promise in the world, which led to the decline of the Zhou Dynasty.

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Baidu encyclopedia-hot air balloon

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Baidu Encyclopedia-Kongming Lantern

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Baidu Encyclopedia-Lantern Festival

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Baidu encyclopedia-bonfire

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Baidu encyclopedia-mantou