C&H Solutions Famous Retro Perpetual Motion Magic Drinking Bird (Green)

This drinking bird was created around showa 20 in japan and has become a classic worldwide. The glass tube contains a volatile liquid, and when the sponge at the head is moistened, temperature changes occur, creating atmospheric pressure that causes the liquid inside the tube to move up and down in a repeating motion, mimicking the charming gesture of drinking. This process is based on the principle of a heat engine, utilizing the temperature difference between two places, and is often considered a type of stirling engine. The glass tube shows red and blue colors, adding a fun visual element. This drinking bird makes a perfect desk decoration, bringing a lively and playful touch to your space.