• Thumbnail for Photoelectric effect
    The photoelectric effect is the emission of electrons from a material caused by electromagnetic radiation such as ultraviolet light. Electrons emitted...
    54 KB (6,557 words) - 07:55, 4 August 2024
  • Thumbnail for Photovoltaic effect
    physical phenomenon. The photovoltaic effect is closely related to the photoelectric effect. For both phenomena, light is absorbed, causing excitation of an...
    11 KB (1,336 words) - 06:48, 1 August 2024
  • Thumbnail for Compton scattering
    level (e.g. photoelectric effect and Rayleigh scattering), at the nucleus, or with just an electron. Pair production and the Compton effect occur at the...
    28 KB (3,854 words) - 17:05, 3 August 2024
  • Thumbnail for Albert Einstein
    theoretical physics, and especially for his discovery of the law of the photoelectric effect", a pivotal step in the development of quantum theory. Born in the...
    221 KB (22,226 words) - 01:12, 7 August 2024
  • Thumbnail for Annus mirabilis papers
    his annus mirabilis (miracle year). The first paper explained the photoelectric effect, which established the energy of the light quanta E = h f {\displaystyle...
    29 KB (3,595 words) - 17:59, 30 June 2024
  • Thumbnail for Photodiode
    an electron–hole pair. This mechanism is also known as the inner photoelectric effect. If the absorption occurs in the junction's depletion region, or...
    29 KB (3,390 words) - 04:38, 31 July 2024
  • photoelectric effect did not seem to agree with the wave description of light. The "photoelectrons" emitted as a result of the photoelectric effect have...
    75 KB (6,419 words) - 15:53, 18 July 2024
  • temperatures. The photoelectric work function is the minimum photon energy required to liberate an electron from a substance, in the photoelectric effect. If the...
    31 KB (3,657 words) - 12:42, 24 May 2024
  • Thumbnail for Heinrich Hertz
    he did not work with actual X-rays. Hertz helped establish the photoelectric effect (which was later explained by Albert Einstein) when he noticed that...
    39 KB (3,892 words) - 06:39, 31 July 2024
  • Thumbnail for Philipp Lenard
    Philipp Lenard (redirect from Lenard effect)
    important contributions was the experimental realization of the photoelectric effect. He discovered that the energy (speed) of the electrons ejected from...
    23 KB (2,408 words) - 07:48, 6 August 2024
  • electron lenses and the accelerating field. The photoemission or photoelectric effect is a quantum electronic phenomenon in which electrons (photoelectrons)...
    20 KB (2,698 words) - 17:22, 29 September 2023
  • Thumbnail for Photoemission spectroscopy
    measurement of electrons emitted from solids, gases or liquids by the photoelectric effect, in order to determine the binding energies of electrons in the substance...
    10 KB (1,218 words) - 21:02, 10 December 2023
  • Thumbnail for Robert Andrews Millikan
    measurement of the elementary electric charge and for his work on the photoelectric effect. Millikan graduated from Oberlin College in 1891 and obtained his...
    48 KB (4,734 words) - 07:00, 19 June 2024
  • Thumbnail for Photometry (astronomy)
    as a CCD photometer or a photoelectric photometer that converts light into an electric current by the photoelectric effect. When calibrated against standard...
    29 KB (3,178 words) - 15:41, 18 July 2024
  • Thumbnail for X-ray photoelectron spectroscopy
    irradiating a material with a beam of X-rays. XPS is based on the photoelectric effect that can identify the elements that exist within a material (elemental...
    42 KB (6,196 words) - 20:31, 23 July 2024
  • Thumbnail for Photomultiplier tube
    separate discoveries of the photoelectric effect and of secondary emission. The first demonstration of the photoelectric effect was carried out in 1887 by...
    36 KB (4,464 words) - 12:04, 29 May 2024
  • quantum ideas to explain individual phenomena—blackbody radiation, the photoelectric effect, solar emission spectra—an era called the Old or Older quantum theories...
    78 KB (9,558 words) - 12:24, 8 May 2024
  • Thumbnail for Louis de Broglie
    of his older brother Maurice and dealt with the features of the photoelectric effect and the properties of x-rays. These publications examined the absorption...
    35 KB (3,956 words) - 00:57, 2 August 2024
  • Thumbnail for Quantum mechanics
    and frequency in Albert Einstein's 1905 paper, which explained the photoelectric effect. These early attempts to understand microscopic phenomena, now known...
    98 KB (12,084 words) - 11:03, 1 August 2024
  • velocity of these electrons did not depend on intensity. This is the photoelectric effect. The continuous wave theories of the time predicted that more light...
    66 KB (7,480 words) - 07:18, 3 July 2024
  • Thumbnail for J. Robert Oppenheimer
    calculations of its transition probabilities. He calculated the photoelectric effect for hydrogen and X-rays, obtaining the absorption coefficient at...
    170 KB (18,915 words) - 22:47, 31 July 2024
  • Thumbnail for Piezoelectricity
    Flexoelectricity Magnetostriction Photoelectric effect Piezoelectric speaker Piezoluminescence Piezomagnetism Piezoresistive effect Piezosurgical Quartz crystal...
    85 KB (9,463 words) - 04:45, 22 July 2024
  • Thumbnail for Solar cell
    directly into electricity by means of the photovoltaic effect. It is a form of photoelectric cell, a device whose electrical characteristics (such as...
    150 KB (17,048 words) - 02:20, 25 July 2024
  • Thumbnail for Gamma ray
    generally termed the photoelectric effect (external gamma rays and ultraviolet rays may also cause this effect). The photoelectric effect should not be confused...
    60 KB (7,397 words) - 05:24, 28 July 2024
  • an integer number of discrete, equal-sized parts. To explain the photoelectric effect, Einstein introduced the idea that light itself is made of discrete...
    107 KB (11,683 words) - 22:42, 16 July 2024
  • Thumbnail for Ernest Lawrence
    research the photoelectric effect. They showed that photoelectrons appeared within 2 x 10−9 seconds of the photons striking the photoelectric surface—close...
    61 KB (6,937 words) - 18:20, 11 July 2024
  • photodiode, which in general are semiconductor diodes that exploit the photoelectric effect to convert light into electricity. APDs use materials and a structure...
    12 KB (1,575 words) - 03:37, 5 May 2024
  • Thumbnail for Corona discharge
    instead, the dominant process generating secondary electrons is the photoelectric effect, from the surface of the electrode itself. The work function of the...
    24 KB (3,073 words) - 10:20, 22 June 2024
  • Thumbnail for Ultraviolet catastrophe
    frequency and also explained an unpublished law of Stokes and the photoelectric effect. This published postulate was specifically cited by the Nobel Prize...
    9 KB (1,043 words) - 21:42, 18 May 2024
  • "quanta of electricity" (electrons), was used in a 1902 article on the photoelectric effect by Philipp Lenard, who credited Hermann von Helmholtz for using the...
    11 KB (1,153 words) - 20:50, 10 July 2024