Royal Rain , a technology that His Majesty King Bhumibol Adulyadej. He invented And conferred as weather modification technology to provide precipitation from clouds warm and cold clouds with the scientific process. By making use of rain that absorbs moisture well. Either in the atmosphere or clouds with temperatures above. Or below freezing catalyze or accelerate the precipitation process faster. And plenty more Since the emergence of cloud The growth of cloud and rain extending up to a rainy day rain more frequently. Add rain Rain spread over time. Forced and induce rain to the area to target precisely and spread over a wide area that will happen naturally