How rain was formed remained a great mystery for quite some time. Only after the weather radar was invented was it possible to discover the stages by which rain is formed. According to this discovery, the formation of rain takes place in three stages. First, the "raw material" of rain rises up into the air with the wind. Later, clouds are formed, and finally raindrops appear. The Qur'an's account of the formation of rain refers exactly to this process.
Note 58. Richard A. Anthes, The Atmosphere, 3rd ed., (Columbus: Charles E. Merrill Publishing Company: 1981), 268-269; Albert Millers, Jack C. Thompson, Elements of Meteorology, 2nd ed., (Columbus: Charles E. Merrill Publishing Company: 1975), 141.
Note 59. Anthes, The Atmosphere, 269; Millers, and Thompson, Elements of Meteorology, 141-142.