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Research Home
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light (energy) (electromagnetic radiation, radiation (energy), ... Associated Concepts (hierarchy name)) |
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Note: That portion of the electromagnetic spectrum visible to the human eye, having a wavelength in the range from about 4,000 (violet) to about 7,700 (red) angstroms and may be perceived by the normal unaided human eye. It ranges from the red end to the violet end of the spectrum, with wavelengths from 700 to 400 nanometres and frequencies from 4.3 x 1014 to 7.5 x 1014 Hz. Like all electromagnetic radiation, light travels through empty space at a speed of about 186,000 miles per second (300,000 km/sec). In the mid-19th century, light was described by James Clerk Maxwell in terms of electromagnetic waves, but 20th-century physicists have shown that it exhibits properties of particles as well; its carrier particle is the photon. Light is the basis for the sense of sight and for the perception of color.
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| Terms: |
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| light (energy) (preferred,C,U,LC,English-P,D,U,N)
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| visible light (C,U,English,UF,U,U)
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| 光 (能量) (C,U,Chinese (traditional)-P,D,U,U)
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| 可見光 (C,U,Chinese (traditional),UF,U,U)
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| guāng (C,U,Chinese (transliterated Hanyu Pinyin)-P,UF,U,U)
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| guang (C,U,Chinese (transliterated Pinyin without tones)-P,UF,U,U)
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| kuang (C,U,Chinese (transliterated Wade-Giles)-P,UF,U,U)
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| licht (energie) (C,U,Dutch-P,D,U,U)
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| lys (C,U,Norwegian (Nynorsk)-P,AD,U,SN)
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| lys (Norwegian (Bokmål)-P,AD,U,SN)
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| luz (energía) (C,U,Spanish-P,D,U,U)
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Facet/Hierarchy Code: B.BM |
Hierarchical Position:
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Associated Concepts Facet |
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.... Associated Concepts (hierarchy name) (G) |
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........ scientific concepts (G) |
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............ physical sciences concepts (G) |
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................ physics concepts (G) |
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.................... <energy and related concepts> (G) |
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........................ energy (G) |
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............................ radiation (energy) (G) |
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................................ electromagnetic radiation (G) |
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.................................... light (energy) (G) |
Additional Notes: |
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| Chinese (traditional) ..... 波長範圍介於約4,000埃(紫色)到7,700埃(紅色)的電磁輻射，可由正常人類肉眼所察覺。 |
| Dutch ..... Elektromagnetische straling met een golflengte tussen ongeveer 4000 (violet) en ongeveer 7700 (rood) ångström, die kan worden waargenomen door een onversterkt menselijk oog. |
| Spanish ..... Radiación electromagnética que tiene una longitud de onda en el rango de aproximadamente 4.000 (violeta) a aproximadamente 7.700 (rojo) angstroms y puede ser percibida a simple vista por el ojo humano. |
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Sources and Contributors: |
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