무료 동영상 감상 Emmiting Light
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In this O Wow Moment Video from the Children's Museum of Houston, we explore how LEDs work and how you can make a simple flashlight using an LED, some self-adhesive foam, and a battery.
In this O Wow Moment Video from the Children's Museum of Houston, we explore how LEDs work and how you can make a simple flashlight using an LED, some self-adhesive foam, and a battery.