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“SULFATE ions in rainwater come from several sources. In industrial areas the principal source is the combustion of fuels containing sulfur. In other areas sulfate comes from shallow-water marine environments.” https://lnkd.in/ete8CApd View in LinkedIn

OBSERVATION. “Instead, electrons are dislodged only by the impingement of photons when those photons reach or exceed a threshold frequency (energy).” https://lnkd.in/eDZvjevE View in LinkedIn

RELATIVE AMOUNTS. “Calcium, magnesium, and potassium ions in rainwater come both from oceanic salts and from land surfaces. Both calcium and magnesium increase with respect to sodium and chloride over land areas, and calcium increases more than magnesium.” https://lnkd.in/ete8CApd View in LinkedIn

DISCREPANCY. “Yet, the experimental results did not correlate with either of the two predictions made by classical theory.” https://lnkd.in/eDZvjevE View in LinkedIn

SEASONALITY. “The chloride content of rainwater shows a marked seasonal trend; and, as mentioned above, inland rain generally contains less chloride than coastal rain.” https://lnkd.in/ete8CApd View in LinkedIn

KEY LAG. “Additionally, according to this theory, a sufficiently dim light would be anticipated to show a time lag between the initial shining of its light and the subsequent emission of an electron.” https://lnkd.in/eDZvjevE View in LinkedIn

IONIC GRADIENTS. “In rain deposited farther inland, the ratios Cl"1:Na+1, K+1:Na+1, and SO4"2:CH, expressed as parts per million, differ from those in sea water. A decrease in chloride content of rainwater with distance from the coast has been observed in many countries.” https://lnkd.in/ete8CApd View in LinkedIn

SODIUM CHLORIDE. “The major cations and anions of rainwater come from several sources. Salts are picked up by winds blowing across large stretches of open ocean.” https://lnkd.in/ete8CApd View in LinkedIn

DRIVERS OF FLUX. “Rainwater is a mixed electrolyte that contains varying amounts of major and minor ions. Sodium, potassium, magnesium, calcium, chloride, bicarbonate, and sulfate ions are major constituents, together with ammonia, nitrate, nitrite, nitrogen, and other nitrogenous compounds.” https://lnkd.in/ete8CApd View in LinkedIn

VARIABLE SOLUTES. “Rainwater has a complex chemical composition that varies from place to place, as well as from shower to shower and season to season in the same place. Rainwater contains some constituents of local origin, and some that have been transported by winds from elsewhere.” https://lnkd.in/ete8CApd View in LinkedIn