Meet this 17.59 Cts Stunning Lustrous Natural Tourmaline 💎✨ Known for its incredible range of colors and brilliant shine, tourmaline is one of the most versatile and eye-catching gemstones in the world. Fun fact: tourmaline can become electrically charged when heated or rubbed—a property called pyroelectricity—once making it a favorite among early scientists! With its vibrant glow and impressive size, this beauty is a true collector’s dream. Find this and thousands more gemstones on Gem Rock Au

The photoelectric effect is a scientific phenomenon in which electrons are emitted from a material surface when it is exposed to electromagnetic radiation, such as light. The energy from the radiation is transferred to the electrons in the material, causing them to be ejected from the surface. The effect was first observed by Heinrich Hertz in 1887, and explained by Albert Einstein in 1905 using the concept of photons. The photoelectric effect is used in many fields, including electronics, solar