【Haichuan Teahouse】Do you know what the Tyndall effect is?
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Have you ever seen sunlight shooting out? Although we live on Earth and during the day, whether it is sunny or cloudy, we actually experience sunlight, it is quite rare to see the bright sunlight with our own eyes. Seeing the sunlight shoot out in beams through the gaps in the clouds in the sky is simply breathtakingly beautiful; it’s so stunning that no words seem adequate to describe it. So, what exactly is it that allows the sunlight to shine brightly across the earth? Speaking of which, from a scientific perspective, this weather phenomenon has a specialized term for it; it is known as the \"Tyndall effect.\" This phenomenon was discovered in 1869 by the famous British physicist Tyndall, and naturally, it was named after him.
It was covered in middle school chemistry when distinguishing between colloids and solutions……
In the future, when you see something like this and can explain to others what the Tyndall effect is, it will make you seem very knowledgeable
It sounds more cultured when interpreted as a “light scattering phenomenon,” mainly because it has a foreign name in it; P
Aerosols, PM2.5, and other elements can also be added to make it more comprehensive
Spouting words that no one else can understand, living a lonely existence.
The theory of Rayleigh Scattering deals with the scattering of incident light beams by tiny particles whose radius is much smaller than the wavelength of light or other electromagnetic waves. These dispersed particles can be colloidal particles, as well as individual atoms or molecules. Scattering occurs whenever light passes through transparent solids, liquids, or gases, with the effect being most pronounced in gases. In 1871, Rayleigh proposed the famous Rayleigh scattering formula; when light strikes a heterogeneous medium such as emulsions or colloidal solutions, the uneven refractive index of this medium causes scattering of light. At the same time, Rayleigh showed that even in a homogeneous medium such as a solution, due to the thermal motion of molecules which disrupts the fixed positional relationships between them, there are density fluctuations and the resulting irregularities in refractive index. The characteristic scale of such spatial irregularities is generally much smaller than the wavelength of light; as a result, pure media also exhibit Rayleigh scattering, which is also known as molecular scattering. This is why the Tyndall effect also occurs in solutions. Author: ViaX Salt Interest Scientific Research and Education. Link: https://www.zhihu.com/question/321501361/answer/1615590877. Source: Zhihu. Copyright belongs to the author. For commercial reuse, please contact the author for permission; for non-commercial reuse, please indicate the source.