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  1. electromagnetic radiation 相關
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  1. ...in the table below. Notes Above 300 GHz, the absorption of electromagnetic radiation by Earth's atmosphere is so great that the atmosphere is ...

  2. ...heat energy first. 2. Heating metal (filament) will start emitting electromagnetic radiation (visible light is one of them). 3. The radiation is at... ...

  3. ..., but there are telescopes for most of the spectrum of electromagnetic radiation and for other signal types. An optical telescope gathers and ... ...

  4. ... to the theory in 'black body radiation', any object emits electromagnetic (EM) radiation as long as it has a temperature. The wavelength of the ...

  5. ...radiation consists of two main categories. One category is electromagnetic radiation like radio waves, microwave, UV, X-ray and gamma rays, and... ...

  6. ...磁場(time varying electric and magnetic fields),但不能產生電磁輻射(electromagnetic radiation)。只有當頻率到達射頻範圍(radiofrequency range),射頻電磁輻 ...

  7. Microwave is electromagnetic (EM) wave in nature. Microwave in domestic microwave oven is ...

  8. ...the emission of light by a substance that has absorbed light or other electromagnetic radiation of a different wavelength.It is a form of luminescence. ...

  9. ...instrument designed for the observation of remote objects by the collection of electromagnetic radiation. The first known practically functioning ...

  10. ...the higher the altitude, the more intense is the radiation. Action (A) would not bring any dose to ... rays are pure energy (they are electromagnetic w ...