Prismatic glass is a special type of optical glass that, due to its unique geometry and optical properties, is able to break up light into different colours, creating a beautiful rainbow effect. This kind of glass not only has important applications in scientific experiments, but also shows its unique charm in the fields of art, architecture and decoration. In this paper, we will discuss the principle, history and application of prismatic glass and its significance in modern life.Describe what wave interaction a prism is and why？

The core principle of prism glass is the refraction and dispersion of light. When light enters another medium from one medium, due to the different density of the medium, the speed of light propagation will change, resulting in the direction of light propagation deflection, a phenomenon known as refraction. Prismatic glass is usually cut into triangles or other polyhedral shapes. When light passes through a prism, different wavelengths of light (i.e. different colours of light) are separated due to different refractive indices, forming a spectrum, which is the phenomenon of dispersion.

Newton first revealed the phenomenon of dispersion of light through experiments in the 17th century. He passed a beam of white light through a prism and found that the white light was decomposed into seven colours: red, orange, yellow, green, blue, indigo and violet, which proved that white light is composed of multiple colours of light. This discovery not only laid the foundation of optical research, but also for the application of prism glass provides a scientific basis.

1. Scientific experiments and optical instruments
   prism glass plays an important role in scientific experiments, especially in the field of spectral analysis. Through the prism glass, scientists can analyse the spectrum of substances, so as to understand its chemical composition and physical properties. In addition, prism glass is also used in the manufacture of telescopes, microscopes, spectroscopes and other optical instruments to help mankind explore the universe and the micro world.
2.  Architecture and Decoration
   Prismatic glass also has a wide range of applications in the field of architecture and decoration. Because of its ability to produce beautiful rainbow effect, prismatic glass is often used for windows, lamps, wall decorations and so on. When exposed to sunlight, prismatic glass creates a colourful and dreamlike atmosphere in interior spaces. In addition, prismatic glass is also used in the production of art and sculpture, becoming an important material for modern art creation.
3.  Education and Entertainment
   Prismatic glass also has important applications in education. Through simple prism experiments, students can intuitively understand the phenomena of light refraction and dispersion, stimulating interest in science. In addition, prismatic glass is also used to make toys and entertainment equipment, such as kaleidoscopes, rainbow lamps, etc., to bring people visual enjoyment.

Conclusion

As a unique optical material, prismatic glass has become a model for the combination of science and art with its magical optical effect and wide range of applications. From Newton’s dispersion experiments to modern architectural decorations, prismatic glass has always played an important role in mankind’s exploration of light and colour. In the future, with the advancement of science and technology, prismatic glass will continue to show its infinite possibilities in science, art and life.