Rainmaking refers to the act of attempting to artificially induce or increase precipitation, usually to stave off drought.
In the US, rainmaking was attempted by traveling showmen. It was practiced in the old west but may have reached a peak during the dust bowl drought of the American West and Midwest in the 1930s. The practice was depicted in the 1956 film The Rainmaker. Attempts to bring rain directly have waned with development of the science of meteorology, the advent of laws against fraud and increased communication technology, with some exceptions such as cloud seeding and rain dances or other forms of prayer, which are still practiced today.
The term is also used metaphorically to describe the process of bringing new clients into a professional practice, such as law, architecture, consulting, advertising, or investment banking - in general, processes that bring money into a company.
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Since the 1940s, cloud seeding has been used to change the structure of clouds by dispersing substances into the air, potentially increasing or altering rainfall. In spite of experiments dating back to at least the start of the 20th century, however, there is much controversy surrounding the efficacy of cloud seeding, and evidence that cloud seeding leads to increased precipitation on the ground is highly equivocal. One difficulty is knowing how much precipitation might have fallen had any particular cloud not been seeded. Operation Popeye was a US military rainmaking operation to increase rains over Vietnam during the Vietnam War in order to slow Vietnamese military truck activity in the region. China has been seeding clouds for years, while American policy makers and scientists are beginning to take rainmaking seriously once again - they now call it geoengineering - in the hope of combating global warming (see Guardian 4 November 2009, 'Can we manipulate the weather?').
Austrian-American psychoanalyst William Reich designed a "cloudbuster" in the United States with which he said he could manipulate streams of orgone energy (which he claimed was a primordial cosmic energy) in the atmosphere to induce rain by forcing clouds to form and disperse. It was a set of hollow metal pipes and cables inserted into water, which Reich argued created a stronger orgone energy field than was in the atmosphere, the water drawing the atmospheric orgone through the pipes. Reich called his research "Cosmic Orgone Engineering."
In 1953, a drought threatened Maine's blueberry crop, and several farmers offered to pay Reich if he could make it rain. The weather bureau had reportedly forecast no rain for several days when Reich began the experiment at 10 a.m. on July 6, 1953. The Bangor Daily News reported on July 24 that the experiment had succeeded and Reich had received his fee. Reich was later arrested and convicted for related medical experiments and all his research materials and books were ordered to be burned by a Maine judge (on request of the FDA), which was done on August 23, 1956.
In many societies around the world rain dances and other rituals have been used to attempt to increase rainfall. Some Native Americans used rain dances extensively. European examples include the Romanian ceremonies known as paparuda and caloian. Some United States farmers also attempt to bring rain during droughts through prayer, a phenomenon particularly common in US farming regions. These rituals differ greatly in their specifics, but share a common concern with bringing rain through ritual and/or spiritual means. Typical of these ceremonies was then-governor of Georgia Sonny Perdue's public prayer service for rain, in 2007.[1]