Lighting refers to the technology that illuminates the environment of people's living activites. Although having existed in one form or another since prehistory, it has become increasingly important over the course of human history. Lighting affects our daily lives in a variety of ways from providing energy for modern living, helping us to see our families and friends in comfortable environments, and promoting safety and security. Lighting systems are important features of modern society, providing people with comfort, visibility, and security. With advances in technology, there are a variety of different lighting systems available, each suited to an individual's needs and preferences. Common lighting systems include incandescent, halogen, fluorescent, and LED bulbs. Incandescent bulbs provide a warm and inviting light, perfect for home and personal use. Halogen bulbs are brighter, and are often used as a spot or task light, such as in a workshop. Fluorescent bulbs are more energy-efficient and last longer, making them ideal for both home and commercial use. LED lighting is even more energy-efficient and has a longer life-span than traditional bulbs, making them a great choice for areas that require consistent or bright light. Lighting is an essential part of life, offering safety, security, and convenience. By investing in energy-efficient lighting, we can all contribute to reducing energy consumption, and help to make our environment brighter and better.