what is the former phenomenon?
It is the emission or transmission of energy in the form of waves or particles through space or through a material medium.
Radiation
In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. 
what was the texas revolution? A rebellion of colonists from the United States and Tejanos in putting up armed resistance to the centralist government of Mexico. in which country did the movement originate? Mexico where did this name originate? From the Nahuatl term for the heartland of the Aztec Empire, namely the Valley of Mexico and surrounding territories, with its people being known as the Mexica. which country invaded this empire? Spain how is cortés related to the conquest? He was a Spanish "Conquistador" who led an expedition that caused the fall of the Aztec Empire which king did he defeat? UNANSWERABLE name a regulation followed here. UNANSWERABLE where was cortés  born? In the town of Medellín, now a municipality of the modern-day province of Badajoz in Extremadura, Spain. what is the climate like in this country? The alpine climate, the humid subtropical climate and the continental climates what is the first one like? One simple definition is the climate which causes trees to fail to grow due to cold. what is the reason behind such a climatic phenomenon? The temperature profile of the atmosphere is a result of an interaction between radiation and convection.
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Radiation [SEP] Introduction
In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. This includes: Radiation is often categorized as either ionizing or non-ionizing depending on the energy of the radiated particles. Ionizing radiation carries more than 10 eV, which is enough to ionize atoms and molecules and break chemical bonds. This is an important distinction due to the large difference in harmfulness to living organisms. A common source of ionizing radiation is radioactive materials that emit α, β, or γ radiation, consisting of helium nuclei, electrons or positrons, and photons, respectively.