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15岁的加拿大女孩安·马科辛斯基曾参加一次科学展览会。她的参展作品是一款使用动能驱动LED灯的手电筒。首先,马科辛斯基测量了手掌热量可产生大约57毫瓦电能,维15持LED灯亮需要的电能大约为0.5毫瓦;接下来,她使用了珀尔帖瓷片,当它一面受热而另一面冷却时将产生电流;最终,她将珀尔帖瓷片和电路连接在一个中空铝管上,管内气体能够冷却珀尔帖瓷片,同时用手掌加热珀尔帖瓷片的另一面,在这种温差效应下可产生电能。
Ann Makozinski, a 15-year-old Canadian girl, attended a science fair. Her exhibit is a flashlight that uses kinetic energy to drive LED lights. First, Markowsinski measured about 57 milliwatts of energy generated by the palm of his hand, and about 0.5 milliwatts of energy when holding a LED. Next, she used Peltier tiles, The other side will generate current when cooling; finally, she will be Peltier tiles and circuits connected to a hollow aluminum tube, the tube gas can cool the Peltier tiles, while the other hand Phella tile heating the other side, In this temperature difference effect can generate electricity.