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	電気化学インピーダンス分光法	光度曲線解析
分野	応用物理学	応用物理学
系統	Process / pipeline	Process / pipeline
提唱年	1969	1880
提唱者	Herbert Leitner, John Ross	Edward Pickering
種類	AC impedance measurement and analysis technique	Signal processing and astronomical observation technique
原典	Barsoukov, E., & Macdonald, J. R. (2005). Impedance Spectroscopy: Theory, Experiment, and Applications (2nd ed.). John Wiley & Sons. ISBN: 978-0-471-64749-2	Ricker, G. R., et al. (2015). TESS: Transiting Exoplanet Survey Satellite. Journal of Astronomical Telescopes, Instruments, and Systems, 1(1), 014003.
別名	EIS, AC impedance, impedance measurement	photometric analysis, transit photometry, eclipsing binary analysis
関連	2	3
概要	Electrochemical Impedance Spectroscopy (EIS) is a powerful technique for characterizing electrochemical systems by applying a small AC voltage over a range of frequencies and measuring the resulting current response. Developed in the late 1960s, EIS reveals the frequency-dependent resistance and capacitance of interfaces, allowing researchers to separate charge transfer kinetics, diffusion, and ohmic losses. It is widely used in battery research, corrosion studies, fuel cells, and biosensors.	Light curve analysis is the study of the brightness variation of a celestial object over time, used to detect and characterize exoplanets, eclipsing binaries, and variable stars. When a planet transits in front of its host star, the star's brightness dips slightly. By analyzing these photometric signatures, astronomers can determine planetary radii, orbital periods, and atmospheric properties. This method has discovered thousands of exoplanets and revealed the structure of stellar systems.