Light reflects off the top and bottom of a thin layer (like oil on water).
Color is not an inherent property of an object, but rather a result of how it treats specific wavelengths of visible light.
Optical properties describe how a material interacts with light, which ultimately determines the colors we see. This interaction is governed by the material's atomic structure and how its electrons respond to electromagnetic radiation. 🎨 Why Do We See Color? Colour and The Optical Properties of Materials:...
Solar cells are engineered to maximize light absorption.
Materials (like LEDs or stars) create their own light. Absorption: Electrons soak up specific photon energies. Reflection: Light bounces off the surface. Transmission: Light passes through the material. 🔬 Key Optical Properties 1. Absorption and Selective Reflection This is the most common cause of color. Pigments: Absorb certain wavelengths and reflect others. Light reflects off the top and bottom of
Explains why clouds look white (larger water droplets scatter all wavelengths equally). 4. Interference and Iridescence
Microscopic patterns in butterfly wings or peacock feathers cancel out some colors and amplify others. 🏗️ Material Classes Material Type Typical Interaction Visual Result Metals High electron density reflects almost all light. Shiny, opaque, often "silvery." Semiconductors Absorption depends on "band gap" energy. Can be transparent (glass) or opaque (silicon). Polymers Long chains often allow light to pass through. Usually transparent or translucent unless dyed. 💡 Practical Applications This interaction is governed by the material's atomic
Use total internal reflection to carry data over long distances.