好奇为什么 · 4-8 岁

肥皂泡为什么有彩色

透明薄膜里的彩虹

科普启蒙约 5 分钟4-8 岁中英双语

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阳台上，米米吹出一串泡泡。咦，肥皂泡为什么有彩色？

On the balcony, Mimi blows a stream of bubbles. “Why do soap bubbles have colors?”

阳台上，米米吹出一串泡泡。咦，肥皂泡为什么有彩色？

On the balcony, Mimi blows a stream of bubbles. “Why do soap bubbles have colors?”

爸爸蹲下来。泡泡明明透明，彩色从哪里来呢？

Dad kneels beside her. “They look transparent, so where do the colors come from?”

爸爸说：“泡泡外面和里面，夹着一层很薄的肥皂水膜。”

Dad explains, “A bubble is a very thin film of soapy water, with air on both sides.”

阳光照来，一部分在外表面反射，一部分穿进膜，在内表面反射。

When sunlight arrives, some reflects from the outer surface, and some travels through the film and reflects from the inner surface.

两束反射光叠在一起：有的颜色变强，有的变弱，这叫薄膜干涉。

The two reflected light waves overlap: some colors become stronger, while others become weaker. This is called thin-film interference.

水膜慢慢向下流，越来越薄；颜色流动变化，破前局部还会发暗。

The soapy film slowly drains downward and gets thinner. Its colors shift and flow, and parts may grow dark just before it pops.

米米点点头：原来彩色来自反射光的叠加，不是泡泡里藏着颜料！

Mimi nods. “So the colors come from overlapping reflected light, not paint hiding inside the bubble!”

米米又问：“那打雷为什么会响呢？”

Mimi asks another question: “Then why does thunder make a sound?”

泡泡薄膜两面反射的光会发生薄膜干涉，不同厚度让不同颜色增强或减弱。

Light reflected from the two sides of a soap film can interfere, making different colors stronger or weaker.

将当前插图、字幕和旁白合成为适合手机分享的竖屏视频。

让孩子走进这个故事

生成一本以孩子为主角的「肥皂泡为什么有彩色」新编绘本，或写下任何一个小心愿，几分钟做成专属中英双语绘本。