How people have used nanotechnology for hundreds of years?

While the term "Nanotechnology" was only coined in the late 20th century, people have harnessed nanoscale materials for centuries. Ancient artisans utilized the unique properties of nanoscale materials, such as in the creation of stained glass where gold and silver nanoparticles produced vibrant colors. Additionally, traditional medicine utilized fine powders of minerals and herbs, which can be considered early forms of nanotechnology. Thus, while modern applications have advanced significantly, the foundational use of nanoscale materials has deep historical roots.