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Anonymous users2024-02-12Obstacles will be encountered because the medium is different and the direction path changes.
Light travels in a straight line (in a homogeneous medium), but when the light meets another medium (homogeneous medium), the direction changes, and it still travels in a straight line. Whereas, in a non-homogeneous medium, light generally travels in a curve. The above light propagation paths can be traced by Fermat's principle.
to be sure. The brighter the brightness of the light, the less obvious it is, and when the brightness of the light is darker, it is from the luminaire to the illumination reference.
The farther away it is, the greater it spreads, from its initial shape to its disappearance.
When the luminaire is at zero distance from the illumination reference, the shape of the light is the true shape and size of the luminaire, so the direction of light propagation is related to the brightness of the light and the distance between the light and the illumination reference.
Law of light propagation:
Light travels in a straight line in the same homogeneous medium. Imaging of small holes.
Solar and lunar eclipses, as well as the formation of shadows, testify to this fact.
Aside from the wave nature of light, the discipline that studies the propagation of light in a medium and the laws of object imaging based on the linear propagation of light is called geometric optics. In geometrical optics, a geometric line with an arrow represents the direction of light propagation, which is called light.
Geometrical optics regards an object as a combination of countless points (in approximation, objects can also be used to represent objects), and the beam of light emitted by the points is regarded as a collection of countless geometric rays, and the direction of the light represents the direction of light energy transfer.
These concepts are obviously contrary to the wave nature of light, but if the size of the object of study is much larger than the wavelength of light, and its fine structure does not need to be carefully considered, the conclusions drawn from geometrical optics are still a good approximation.
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Anonymous users2024-02-11Light is also a wave, for example, when sunlight hits the earth's surface, a large part of it is directly reflected back by the earth's atmosphere; Light will also have different degrees of entry from one medium to another, for example, light will be refracted from air into water; At this stage, research has shown that even light cannot escape the gravitational pull of the black hole, and is sucked into it, making it impossible to propagate.
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Anonymous users2024-02-10Of course, the propagation of light will be hindered, because light travels in a straight line, and if there is something opaque in its path, it will block or reflect it.
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Anonymous users2024-02-09Air, liquids, solids, particles can be.
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Anonymous users2024-02-08Sound travels in the form of waves, and gases, liquids, and solids are the mediums through which sound is propagated.
Matter is required for sound propagation, and such matter is called the medium of sound in physics. The propagation speed of sound: v The propagation speed of gas sound at different temperatures: v high and v low (refers to temperature).
The propagation speed of light is also determined by the medium: vSolideFor example: light passes through the lens, and the lens is the medium; Light enters the water, and the water is the medium.
The velocity of light in water:,The velocity of light in glass:,The velocity of light in ice:,The velocity of light in air:,The velocity of light in air:,The velocity of light in air:.
Yes, there is no doubt about it, there are studies that say it may also spread in a straight line, and this is because: >>>More
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