Solar lamps are lamps that obtain energy from sunlight and convert it into electricity to provide lighting. They are very popular today. Solar lamps use photovoltaic cells to convert solar energy into electricity. When the sun is out, the lamp's solar panel absorbs the sunlight and converts it into electricity which is then stored in the rechargeable battery. This electricity can be used to power the lamp and provide lighting in the dark. Solar lamps are very environmentally friendly and energy efficient. Since they are powered by the sun, they generate no pollution and don't require any electricity from the grid, thus reducing dependence on fossil fuels. Moreover, they don't require any running costs like electricity bills and don't need any maintenance costs. Besides, they can last for years and are very durable. Solar lamps are very popular around the world. They are becoming increasingly popular in developing countries because they are an affordable and dependable source of light, something which many households don't have access to. The popularity of solar lamps is surely going to increase as more people realize the potential of this amazing technology. It has the potential to provide lighting to millions of people all over the world who don't have access to electricity.