科学微观摄影展:爱心虫和婴儿乌贼(组图)(9)
电能转换装置
这张作品是由布鲁斯-阿尔德曼(Bruce Alderman)拍摄的,这是一项热能直接转换成为电能的实验装置。该装置的实际应用可使任何高温废弃热能转换成为有用的电功率。
如图所示,图片左侧的是一个热电极,它像任何发热金属一样,该热电极表面覆盖着电镀层,如果它接触到冰冻的物体表面,便会产生电能。然而在一般情况下,在高温热电极下却很少产生电流。
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