一在自然界,有一种东西最不可思议也最不驯服,那便是火,如燃烧的精灵,跳荡不安,神秘又明丽。就其物理特性而言,火是物质燃烧过程中散发出光和热的现象,是能量释放的一种方式。火焰的温度由内向外依次增高。可燃物、燃点、氧化剂是燃烧的必备条件。在古希腊哲学中,火被认为是产生和构成世界最重要的元素。赫拉克利特相信:“火是原质,其它万物都是由火而 One in nature, there is a thing the most incredible and the most unmanaged, that is, fire, such as the burning genie, uneasy, mysterious and bright. In terms of its physical properties, fire is the phenomenon of light and heat exuding from the combustion of matter and is a means of energy release. The temperature of the flame increases from the inside to the outside. Combustible, ignition, oxidizer is a prerequisite for combustion. In ancient Greek philosophy, fire was considered the most important element that produced and constituted the world. Heraclitus believes: ”Fire is the essence, everything else is by fire