2:17
Diposkan 11 May 2015
Energy of human body heat

Energy of human body heat

or
продолжительность: 2:17
Posted on 11 May 2015
Deskripsi
Ann Makosinski, 16 years old, invented a flashlight that runs solely on human body heat.
Kata yang direkomendasikan
ambient - ambient
to enter - memasukkan

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