منابع مشابه
Concerning Hertz’ photoelectric effect
Experimental evidence of the photoelectric effect goes back to H. Hertz. It occurred during the famous confirmation experiments of the Maxwellian theory. It is commonly held however that it cannot be explained in the framework of that theory. We are calling attention to some aspects linked with the interpretation of that effect on which, in our opinion, it is worth-
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We test Einstein’s theory of the photoelectric effect, which predicts a linear relation between the energy of light incident on a metal surface and the energy of the emitted electrons. We determine the electron stopping voltage as a function of frequency of incident radiation by illuminating a potassium cathode and constraining the wavelength of incident radiation using several optical band-pas...
متن کاملPhotoelectric effect at ultrahigh intensities.
In the spectral range of the extreme ultraviolet at a wavelength of 13.3 nm, we have studied the photoionization of xenon at ultrahigh intensities. For our ion mass-to-charge spectroscopy experiments, irradiance levels from 10(12) to 10(16) W cm(-2) were achieved at the new free-electron laser in Hamburg FLASH by strong beam focusing with the aid of a spherical multilayer mirror. Ion charges up...
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Quantum Efficiency (QE) measurements of single photon photoemission from a Cu(111) single crystal and a Cu polycrystal photocathodes, irradiated by 150 fs-6.28 eV laser pulses, are reported over a broad range of incidence angle, both in s and p polarizations. The maximum QE (≃ 4×10−4) for polycrystalline Cu is obtained in p polarization at an angle of incidence θ = 65◦. We observe a QE enhancem...
متن کاملTeaching Quantum Theory - between the Photoelectric Effect and Quantum Information
Quantum theory as a basic physical theory has to be part of the physics education at school. At least the most fundamental features and principles of it have to be conveyed to the students. However there is no general consensus and a certain uncertainty about the main focus of teaching. One striking difference between classical and quantum physics is represented by the nature of physical object...
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ژورنال
عنوان ژورنال: Science
سال: 1912
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.35.907.783