人类在改造客观世界的过程中,需要工具和能源两大物质手段,利用能来驱动工具,为人类生活和生产服务。能一般指能力,在科学中则指能量,是物质运动的一般量度。任何物质都离不开运动,如机械运动、分子热运动、电磁运动、化学运动、原子核与基本粒子运动等等。相应于不同形式的运动,有机械能、分子内能、电能、化学能、原子能等。近年来还有从能源角度提出的太阳能、光能、生物能、海洋能、地热、风能(风 In the process of transforming the objective world, mankind needs two material means: tools and energy, which can be used to drive tools and serve human life and production. Can generally refer to ability, in science refers to energy, is a general measure of material movement. Any material can not be separated from the movement, such as mechanical movement, molecular thermal movement, electromagnetic movement, chemical movement, atomic nucleus and elementary particle movement and so on. Corresponding to different forms of movement, mechanical energy, intramolecular energy, electrical energy, chemical energy, atomic energy and so on. In recent years, there are solar energy, light energy, bio-energy, ocean energy, geothermal energy, wind energy