阳光是人类取之不尽、又无污染的能源。诸如自然界中的燃料能、风能、水能及电能等等,皆来源于太阳能。 虽然在遥远的古代人类就直接利用太阳能,但直到近代人类才制成了各种集中太阳能的设备。今后,太阳能的利用必将受到愈来愈大的重视。 太阳以光辐射的方式,向地球不停地输送着巨大的能量,是一种不污染环境、自然清洁的能源。据粗略估计,太阳辐射到达地球表面的总能量,相当于180万亿瓩,或 Sunshine is an inexhaustible and pollution-free energy source. Energy sources such as fuel, wind, water and electricity in nature are all derived from solar energy. Although solar energy was directly used by people in distant ancient times, it was not until modern times that humans made various devices that concentrated solar energy. In the future, the use of solar energy will surely receive more and more attention. The sun radiates light to the earth, sending huge amounts of energy to the earth. It is a clean energy source that does not pollute the environment. According to a rough estimate, the total amount of solar radiation reaching the Earth’s surface is equivalent to 180 trillion won, or