Diathermancy

Diathermancy
The Amazon river delta showing no clouds above river waters because water is not a diathermanous fluid

Diathermancy is the property of some fluids to get sun rays through them without being heated. Therefore, a diathermanous fluid is Permeable by heat rays[1]). Atmospheric air is diathermanous, therefore, air it is not heated by sunshine. Water, on the contrary, is not diathermanous as we can see on a satellite image from the Amazonas Delta into the Atlantic Ocean, in which we can see no clouds over the big river because image was taken at the morning, when water is much colder than the continent and it is absorbing heat, since water lasts longer than soil in warming up, but also lasts longer in cooling down. It was Heinrich Magnus who first studied this theme in the 19th century.

References

  1. ^ Diathermanous (



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  • Diathermancy — Di a*ther man*cy, Diathermaneity Di a*ther ma*ne i*ty, n. [See {Diathermanous}.] The property of transmitting radiant heat; the quality of being diathermous. Melloni. [1913 Webster] …   The Collaborative International Dictionary of English

  • diathermancy — [dī΄ə thʉr′mən sē] n. [Fr diathermansie < Gr dia , through + thermansis, a heating] the property of transmitting infrared or heat rays diathermanous adj …   English World dictionary

  • diathermancy — diathermanous, adj. /duy euh therr meuhn see/, n., pl. diathermancies. the property of transmitting heat as electromagnetic radiation. [1830 40; < F diathermansie < Gk dia DIA + thérmansis heating, equiv. to therman (var. s. of thermaínein to… …   Universalium

  • diathermancy — noun The condition of being diathermic …   Wiktionary

  • diathermancy — The condition of being diathermic …   Medical dictionary

  • diathermancy — n. quality of transmitting heat as electromagnetic radiation (Physics); state of being diathermic (Medicine) …   English contemporary dictionary

  • diathermancy — di·a·ther·man·cy …   English syllables

  • diathermancy — /daɪəˈθɜmənsi/ (say duyuh thermuhnsee) noun the property of transmitting radiant heat; quality of being diathermanous. {French diathermansie, from dia dia + Greek thermansis heating} …  

  • diathermancy — n. the quality of transmitting radiant heat. Derivatives: diathermic adj. diathermous adj. Etymology: F diathermansie f. Gk dia through + thermansis heating: assim. to ANCY …   Useful english dictionary

  • Diathermaneity — Diathermancy Di a*ther man*cy, Diathermaneity Di a*ther ma*ne i*ty, n. [See {Diathermanous}.] The property of transmitting radiant heat; the quality of being diathermous. Melloni. [1913 Webster] …   The Collaborative International Dictionary of English

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