page_title: Phenomenon
section_title: Science
hierarchical_section_title: Phenomenon / Science
caption_attribution_description: English: A comparison between a flame on Earth and a flame in a microgravity environment. This occurs because the flame on Earth is hot and since heat rises it makes that nice slender shape but since there isn't gravity in the second picture it just expands in a sphere. Українська: Порівняння полум'я свічки на Землі (зліва) та полум'я у середовищі мікрогравітації. На Землі на нього діє тяжіння планети, полум'я підіймається, видовжується; оскільки друге зображення зроблене в умовах майже відсутньої гравітації, полум'я просто поширюється в усі сторони, формуючи сферу.
context_page_description: A phenomenon is "an observable fact or event." The term came into its modern philosophical usage through Immanuel Kant, who contrasted it with the noumenon, which cannot be directly observed. Kant was heavily influenced by Gottfried Wilhelm Leibniz in this part of his philosophy, in which phenomenon and noumenon serve as interrelated technical terms. Far predating this, the ancient Greek Pyrrhonist philosopher Sextus Empiricus also used phenomenon and noumenon as interrelated technical terms.
context_section_description: In scientific usage, a phenomenon is any event that is observable, including the use of instrumentation to observe, record, or compile data. Especially in physics, the study of a phenomenon may be described as measurements related to matter, energy, or time, such as Isaac Newton's observations of the moon's orbit and of gravity; or Galileo Galilei's observations of the motion of a pendulum.
  In natural sciences, a phenomenon is an observable happening or event. Often, this term is used without considering the causes of a particular event. Example of a physical phenomenon is an observable phenomenon of the lunar orbit or the phenomenon of oscillations of a pendulum.
  A mechanical phenomenon is a physical phenomenon associated with the equilibrium or motion of objects. Some examples are Newton's cradle, engines, and double pendulums.
caption: A comparison between a candle flame on Earth (left) and in a microgravity environment, such as that found on the International Space Station (right).
   The same burning phenomenon is observed, but different flame shape and colouring phenomena are also observed.
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