Does physics say that light is an electromagnetic wave?

Updated on science 2024-08-01
12 answers
  1. Anonymous users2024-02-15

    Electromagnetic waves alone, there is no doubt about it. If it's not daytime, it's not that there is no light, you think, the moon reflects the sun's light, the stars shine, but the intensity of the light is weaker at night. The diffraction experiment of light proves the wave nature of light, and the photoelectric effect proves the particle nature of light.

    De Broglie tells us that everything has a wave-particle duality.

  2. Anonymous users2024-02-14

    Light is a wave, but not a wave like we normally see, it is a probability wave. It also has particle properties, and the movement of these particles is irregular, but after a lot of statistics, it shows a law, that is, it has a certain probability of appearing in a certain position. This is what we call wave-particle duality.

    That is, light is both a wave and a particle.

    Although light is a special wave, it still has the general characteristics of waves. It has a wavelength, a frequency, an amplitude, interference, diffraction. The human eye has a range of reception frequencies, but it may not be within the range to see, and there is also the problem of light intensity.

  3. Anonymous users2024-02-13

    Light is an electromagnetic wave (visible spectrum) that can be seen by the human eye. In the scientific definition, light sometimes refers to the entire spectrum of electromagnetic waves. Light is made up of a type of elementary particle called a photon. It has particle and wave properties, or wave-particle duality.

  4. Anonymous users2024-02-12

    Light is an electromagnetic wave. Yes. Light is fluctuating and also particle-like. So it's electromagnetic waves.

  5. Anonymous users2024-02-11

    Yes, light is an electromagnetic wave.

  6. Anonymous users2024-02-10

    The difference between light and electromagnetic waves is:

    1.Electromagnetic waves have a wide range of wavelengths, and the wavelength range of light is included in them, and light can be considered as an electromagnetic wave.

    2.Light has characteristics that are different from general electromagnetic waves, so light has wave-particle duality, that is, light has the characteristics of waves, such as interference, derivation and other phenomena;

    3.Light also has the characteristics of a general particle beam, that is, light has particle properties. Whereas, electromagnetic waves are not particle-like.

    According to modern physics theory, light should belong to electromagnetic waves, because there is physical evidence, that is, all phenomena and laws such as reflection, refraction, diffraction, and interference of light are applicable in electromagnetic waves, so it is believed that light is electromagnetic waves.

    The electromagnetic radiation that can be received by the human eye, with wavelengths between about 380 and 780 nanometers, is called visible light. For example, the essence of electromagnetic waves and light is the same, but the frequencies of different electromagnetic waves are different.

  7. Anonymous users2024-02-09

    Light is definitely an electromagnetic wave.

  8. Anonymous users2024-02-08

    At present, we believe that the essence of light is electromagnetic waves. Light is a kind of electromagnetic wave, which is a kind of electromagnetic field derived from the interaction between the changing electric field and the magnetic field, and it has wave-particle duality, which is the essence of what we think of as light, and it is also the result of scientific research.

    From the point of view of particles, Newton, the ancestor of modern physics, is a representative of Bizhi. At that time, the research of physics was based on visible entities, and people generally believed that the composition of the entity was a kind of particle, and there was no relevant theory about the concept of matter as a wave, and the entity composed of particles could be described by Newton's theory, Newton believed that the ruler, about the linear propagation and reflection properties of light, is the evidence that light is a particle. The convincing evidence in favor of light particles is the explanation of the phenomena of light pressure and the photoelectric effect in modern physics, the photoelectric effect of which later won Einstein the Nobel Prize in Physics.

    The refraction and diffraction phenomena of light are unexplained by the theory of light particles, and later Young's double-slit experiments also point to the evidence that light is a wave. The real establishment of the theory of light waves was the establishment of Maxwell's equations, which led to a quantitative description of the so-called wave nature of light.

    Wave-particle duality is not only unique to the microscopic world, but later with the establishment of quantum mechanics and the creative insights of de Broglie's waves, the concept of material waves was proposed. This is a great initiative to connect the microcosm and macrocosm, and it gives us a deeper understanding of nature.

  9. Anonymous users2024-02-07

    Light is a type of electromagnetic wave.

    The wavelength of light is within the wavelength of electromagnetic waves, and light has the properties of reflection, interference, refraction, diffraction, etc., so it can be regarded as a type of electromagnetic wave. Light has wave-particle duality, and in addition to the properties of the waves mentioned above, it also has the properties of particles, which are not found in electromagnetic waves.

    Macro and micro interpretations of light.

    1.The most macroscopic angle of view of a beam, in geometric optics, light is a beam. The linear propagation theorem, the refraction theorem, the reflection theorem, and the lens imaging principle are the most important theorems in the light beam.

    2.In the microscopic perspective of light waves, when dealing with a scale equivalent to the wavelength of light (about the micron scale), light is a wave, just like a wave of water and a wave of machinery. Amplitude, frequency, polarization, and phase are the most important properties of light waves, and the principles of interference and diffraction are the basic principles of wave optics.

    3.Photons are at the atomic scale (below nanometers), and we propose a conceptualized non-corporeal particle that has particle properties that can help us simplify the problem. By definition, the smallest amount of energy absorbed or emitted during an atomic transition is called a photon.

    Wave-particle duality is its fundamental property that cannot be divisible, both exist at the same time, and in one case exhibit a dominant property. Quantum mechanics is the fundamental theorem of the photon theory. <>

  10. Anonymous users2024-02-06

    Yes, light is a form of electromagnetic waves. Electromagnetic waves are waves produced by changing electric and magnetic fields, which propagate in the form of waves in space. The frequencies and wavelengths of electromagnetic waves can have a large range, forming the electromagnetic spectrum.

    In the electromagnetic spectrum, light is the visible part, usually referring to electromagnetic waves that can be seen by the human eye, and its wavelengths are about 400 nanometers (violet) to 700 nanometers (red). However, the electromagnetic spectrum also includes many other waves that we cannot see, such as radio waves, microwaves, infrared, ultraviolet rays, X-rays, and gamma rays. The properties of these waves are similar to those of visible light, but they differ in frequency and wavelength.

    Therefore, light is a special case of electromagnetic waves, the part of the electromagnetic spectrum that can be directly perceived by humans.

  11. Anonymous users2024-02-05

    In high school physics, we know that light has wave-particle duality, which has both the reflection and diffraction of waves; In addition, there are particle characteristics, and it is often said that the use of laser targets is to make full use of the characteristics of high concentration of laser particles. So we say that light contains electromagnetic waves. But it's not just electromagnetic waves, it's just one of its properties.

    We should have a more comprehensive understanding of the essence of things, and explain its characteristics in a scientific manner: light is both a wave and a particle, and sometimes it has the characteristics of a wave and a particle.

    The first to affirm that light is particulate was Einstein, who argued that light is not only an electromagnetic wave, but also a particle. According to his theory, electromagnetic radiation not only appears in the form of particles of energy h when emitted and absorbed, but also travels in space at the speed of light c in this form, and this particle is called a quantum of light, or photon. The relationship between the momentum and energy of relativistic light p = e c = hv c = h proposes the relationship between the momentum p of the photon and the wavelength of radiation (=c v).

  12. Anonymous users2024-02-04

    In classical physics, Maxwell saw light as an electromagnetic wave without any particle properties; For physical particles (such as electrons, neutrons, protons, etc.), they are purely considered to be a kind of particle, which is used to form a more complex structure of matter, and thus to form a macroscopic entity, without any of the characteristics of waves.

    The essence of light is a stream of photons of visible light frequency, which propagates at the speed of light c in a vacuum, and has wave-particle duality like other microscopic particles. In this sense, light is a probability wave. When the particle number density of light is extremely high, and the resolution of the detection instrument is much less than the energy of a photon, it can be regarded as a classical electromagnetic wave, and its propagation follows the Maxwell equation.

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