Kalmia species are used as food plants by the larvae of some lepidopteran species including Coleophora kalmiella which feeds exclusively on Kalmia.hey grow in acidic soils, with different species in wet acid bog habitats (K. angustifolia, K. polifolia) and dry, sandy soils (K. ericoides, K. latifolia). Kalmia was named by Linnaeus to honour his friend the botanist Pehr Kalm, who collected it in eastern North America during the mid-18th century.
Tesla electrified Niagara Falls!! In 1895, the Westinghouse Company and Nicola Tesla built the first hydroelectric alternating current system at Niagara Falls. Tesla was determined that the awesome power of the Falls should be harnessed to the awesome power of polyphase alternating current.
What is Alternating Current. Alternating current has a constant voltage, but constantly changes position between positive and negative polarities, producing a wave when represented visually. Electric current is transmitted around the country in the form of alternating current. 120 volts and 60 cycles (position changes between polarities positive to negative to positive) per second (60 Hz) alternating current is what is the most common power source that is supplied to United States residential homes.