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  2. Aether theories - Wikipedia

    en.wikipedia.org/wiki/Aether_theories

    In the 19th century, luminiferous aether (or ether), meaning light-bearing aether, was a theorized medium for the propagation of light. James Clerk Maxwell developed a model to explain electric and magnetic phenomena using the aether, a model that led to what are now called Maxwell's equations and the understanding that light is an ...

  3. Aether (classical element) - Wikipedia

    en.wikipedia.org/wiki/Aether_(classical_element)

    According to ancient and medieval science, aether (/ ˈ iː θ ər /, alternative spellings include æther, aither, and ether), also known as the fifth element or quintessence, is the material that fills the region of the universe beyond the terrestrial sphere. [1]

  4. File : A history of the theories of aether and electricity ...

    en.wikipedia.org/wiki/File:A_history_of_the...

    Recoded by LuraDocument PDF v2.28: Encrypted: no: Page size: 359 x 581 pts; 338 x 563 pts; 319 x 562 pts; 333 x 564 pts; 330 x 557 pts; 332 x 540 pts; 319 x 539 pts; 343 x 560 pts; 352 x 584 pts; Version of PDF format: 1.5

  5. Surface energy transfer - Wikipedia

    en.wikipedia.org/wiki/Surface_energy_transfer

    The SET rate follows the inverse of the fourth power of the distance [2] = where ⁠ ⁠ is the donor emission lifetime; ⁠ ⁠ is the distance between donor-acceptor; ⁠ ⁠ is the distance at which SET efficiency decreases to 50% (i.e., equal probability of energy transfer and spontaneous emission).

  6. Energy recovery - Wikipedia

    en.wikipedia.org/wiki/Energy_recovery

    The energy can be in any form in either subsystem, but most energy recovery systems exchange thermal energy in either sensible or latent form. In some circumstances the use of an enabling technology, either daily thermal energy storage or seasonal thermal energy storage (STES, which allows heat or cold storage between opposing seasons), is ...

  7. Category:Business cycle theory - Wikipedia

    en.wikipedia.org/wiki/Category:Business_cycle_theory

    Download as PDF; Printable version; In other projects Appearance. ... Help. This category is located at Category:Business cycle theories. Note: This category should ...

  8. Energy flow (ecology) - Wikipedia

    en.wikipedia.org/wiki/Energy_flow_(ecology)

    [7] 100×10 15 grams of carbon/year fixed by photosynthetic organisms, which is equivalent to 4×10 18 kJ/yr = 4×10 21 J/yr of free energy. Cellular respiration is the reverse reaction, wherein energy of plants is taken in and carbon dioxide and water are given off.

  9. Thermal engineering - Wikipedia

    en.wikipedia.org/wiki/Thermal_engineering

    Thermal engineering is a specialized sub-discipline of mechanical engineering that deals with the movement of heat energy and transfer. The energy can be transferred between two mediums or transformed into other forms of energy. A thermal engineer will have knowledge of thermodynamics and the process of converting generated energy from thermal ...