Schauberger
During early and late frosts experienced farmers protect their blossoming orchards by spraying water onto iron or steel plates through a system of paramagnetic[16] nozzles, which results in an immediate rise in temperature of about (6°C - 10.8°F) in the crown zone. This water cannot mix with the differently charged surrounding air and remains unchanged even under the severest frost. This works incomparably better than artificial smoke generators (smudge pots), which are also known to protect the delicate blooms against freezing. If the above process is carried out with copper nozzles, then a conspicuous cooling occurs in the crown zone, which can be used to safeguard sensitive young shoots and protect them from scorching. This is especially necessary in the case of young light- and heat-sensitive seed-stock, which are often shielded from sunburn with leafy cuttings. [The Energy Evolution - Harnessing Free Energy from Nature, The Catalysts]