تحميل كتاب مقدمة بسيطة في التحليل الطيفي SPECTROSCOPY pdf مقدمة بسيطة في التحليل الطيفي SPECTROSCOPY من كتب علمية Electromagnetic Spectrum Electromagnetic Radiation Light can exist as: Particles (photons) Waves Waves --Wavelength-- Frequency (n) is the number of waves that pass any given point per second. l 3 Wave Properties Period (p) – the time required for the passage of successive maxima through a fixed point in space. Frequency (n) – the number of oscillations of the field that occur per second. Equal to 1/p. Determined by source and remains invariant regardless of media traversed. Velocity (v) – the rate at which a wave front moves through a medium. Dependent on composition of medium and frequency. Wave Properties (continued) Wavelength (l) – the linear distance between successive maxima or minima of a wave. The wavelength must decrease as radiation passes from a vacuum to some other medium. Wavenumber (s) – the number of waves per centimeter. .
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