![]() Further “examples of radiant energy include the warmth that radiates from a hot stove and the warmth from direct sunlight.” Some examples of radiant energy include x-rays, radiant heat systems, and solar cells or solar panels that convert the energy of the sun into solar electricity. Light waves are the only wavelengths we can typically see within our human sight. Examples of Radiant EnergyĪn electromagnetic wave that scatters radioactive radiation can have many forms. Unlike light energy, that is reflected into the atmosphere by air where energy has the capability to work, radiant energy is transmitted into the atmosphere in the form of electromagnetic waves with electrical and magnetic properties. Those with low frequency and long wavelengths are low power waves. Electromagnetic energy waves that are with low frequency and long wavelength are high energy waves. It is a form of “electromagnetic energy,” that “can take the form of visible waves – which is what we call light energy – or invisible waves such as radio waves or x-rays.”ĭifferent electromagnetic waves of the same nature are identified by their size and frequencies. Radiant energy is the energy contained in the vibrationally charged particles around an object. Faith Inspired Renewable Energy Project.Interfaith Gathering for Peace in Ukraine. ![]() Faith Leader Declaration on Climate Change.Holyland Seminarians Faith & Ecology Project. ![]() The next few years witnessed the evolution of Grothus' law of photo-chemical absorption: “Only rays absorbed are effective in producing chemical change. A year previously Herschel had noted that a thermometer hung just outside the visible limits of the red end of the spectrum was markedly affected, which led to the discovery of the infra-red or dark heat rays. These results were not fully understood until, in 1801, Ritter announced the discovery of the ultra-violet region of the spectrum, basing his conclusions on observations similar to those of Scheele but overlooked by the latter. Two years later Ingenhauss showed that the dissociation of carbon dioxide by green leaves under the influence of sunlight is a chemical effect and not, as previously supposed, due to heat alone. In 1777, Scheele noted that chlorine was liberated from silver chloride in the violet region of the spectrum. In 1678, Huygens propounded the theory of wave propagation of light. Some time later Römer determined that light travels at a finite velocity. However, his results were not understood or applied practically until a much later date, and Newton died without knowing that radiations fall into a series differing only in wave length and frequency. The first really scientific contribution to the problem of radiant energy was made by Newton in his careful study of the spectrum visible when a beam of sunlight was directed through a prism. In 1661, John Evelyn, in his “Fumifugiurn,” uttered a scathing denunciation of the practice of burning “sea coal,” which produced a dense cloud of smoke, However, his diatribe was probably prompted by æsthetic considerations rather than any scientific understanding of the unhygienic exclusion of sunlight. This method seems to have been extensively practised by the Chinese and it is probable that Gadsden adopted it as a purely empirical procedure. The first recorded instance of any attempt to employ any kind of radiation in disease was made by John Gadsden, who treated small-pox patients-among them a son of Edward I-with red light to prevent scarring. Whatever scientific knowledge of the influence of radiant energy that may have been gathered among the ancient peoples was lost sight of during the medieval period, characterized as it was by almost complete disregard of all hygienic principles. However, it is probable that most of their “sun bathing” represented merely a popular fad. The Greeks and Romans prescribed empirically in many conditions the extensive application of sunlight. PRIMITIVE man evidently had some sort of idea of the importance of sunlight-the only form of radiant energy he recognized-in human health and welfare, for all primitive religions contained some element of sun worship.
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