Notes and Study material for Exams
Energy Efficiency Energy efficiency, means using less energy to provide the same level of energy. It is therefore one method to reduce human greenhouse gas emissions. For example if a house is insulated, less energy is used in heating and cooling to achieve a satisfactory temperature. Another example is installing fluorescent lights or skylights, instead … Read more
Harnessing the Sun: A Deep Dive into Photovoltaic Electricity The sun, a celestial powerhouse, has been a source of fascination and wonder for humanity since time immemorial. Its radiant energy, a gift from the cosmos, has fueled life on Earth for billions of years. Now, in an era defined by the urgent need for sustainable … Read more
Photovoltaic Electricity Photovoltaic (PV) electricity is a type of solar energy that converts sunlight into electricity using semiconductors. PV cells are made of materials that allow electricity to flow when light hits them. When sunlight hits a PV cell, it knocks electrons loose from their atoms. These free electrons flow through the cell, creating an … Read more