In my opinion, LHP and RHP cannot be defined abstractly, in terms of just one aspect of the principles or aims of a particular path. Instead, I regard LHP and RHP as groupings that have evolved spontaneously, and whose meaning is mainly social and historical.
The cold plate causes the moisture in the warm air, which is inside the jar to condense and form water droplets. This is the same thing that happens in the atmosphere. Warm, moist air rises and meets colder air high in the atmosphere. The water vapor condenses and forms precipitation that falls to the ground.
Boiling. For emergency or short-term use of rain barrel water for drinking, boiling is the best way to purify rainwater because it kills viruses, parasites and bacteria that cause diarrhea.he rain that falls in cities or flows across outdoor basins, roofs and other open air surfaces on its way to a barrel is another story. Contamination from animal feces, dead insects, engine oil, car exhaust, lead paint and other substances can make drinking it a health hazard. (See References 1, pages 120e and f).