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  1. electromagnetic radiation 相關
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  1. energy is quantized in an atom. when photons are emitted, they must pocess energy equal to difference between two energy levels. since the energy ...

  2. 1) visible light = 3.8 x 10^-7 nm to 7.8 x 10^-7 nm 5 x 10^-7 m = blue light TV, computer screens etc. 2) 3*10^-10 Xrays well um i don't think ...

  3. ...raw materials by drilling, mining and quarrying 5) Electromagnetic radiation from overhead power lines, 'sick building' syndrome...

  4. ...對眼睛和皮膚有一定的傷害。 俗稱紫外光。 無線電波:無線電波是電磁輻射(Electromagnetic Radiation)的一種,屬於低頻率輻射。無線電波廣泛應用在現代生活,通 ...

  5. ... of unburnt carbon or other material) so does the average energy of the electromagnetic radiation given off by the flame (see blackbody). ...

  6. ... . Conjugated systems can sometimes represent regions where electromagnetic radiation is absorbed at different wavelengths resulting in...

    分類:科學及數學 > 化學 2007年08月28日

  7. ...radioactive nucleus decays spontaneously by emitting either particles, electromagnetic radiation (gamma rays), neutrinos (or all of them) Fusion, ...

  8. ...無線電波和可見光一樣,但帶有較大能量。 Gamma rays are electromagnetic radiation, the same as radio waves and visible light, but with much greater ...

  9. ...參考:http://l.yimg.com/f/i/tw/ugc/rte/smiley_14.gif 簡單來說,電磁波就是電磁場(ElectroMagnetic Radiation,簡稱EMR) 的波動,電場的變化產生磁場,磁場的 ...

  10. ...don’t have to be afraid if they know which type of radiation it is. An electromagnetic wave radiation includes communication electric wave and ...