Solar energy is considered one of the best forms of renewable energy that can acquire the best quality output and has no adverse effect on the environment. We all know solar units run on solar light, but very few of us know how sunlight gets converted into energy.
Solar cells are the real magicians here because they convert sunlight into energy. The amount of energy produced largely depends on the cells’ efficiency, amount of solar light received, and number of solar hours per day.
Solar power has to be converted into electricity and here is one of the most popular methods of solar power.
Photovoltaic System: How It Works
The solar cell is made of silicon and arranged on rectangular panels. When sunlight hits a cell, the energy knocks electrons free of their atoms allowing them to flow through the material. The resulting direct current electricity is then sent to a power inverter for conversion to alternating current.
Facts about the Sun
According to NASA, the visible part of the sun is about 10,000 degrees Fahrenheit (5,500 degrees Celsius), while temperatures in the core of this planet reaches more than 27 million F (15 million C), driven by nuclear reactions. In reality, according to NASA, we need to explode 100 billion tons of dynamite per second to equal the energy produced by the sun. Here are a few interesting facts about the Sun:
- The Sun is comprised of three-quarters hydrogen and remaining mass is made of helium
- The Sun will continue to burn for about 130 million years after it burns through all of its hydrogen, instead burning helium
- The energy created by the Sun’s core is known as nuclear fusion
- The Sun travels at 220 km per second
- It takes 8 minutes for sunlight to reach Earth’s surface
- At 4.5 billion years old, the Sun has burned off till date about half of its hydrogen stored, but it has enough hydrogen to continue burning for another 5 billion years.
- Temperatures inside the Sun can reach up to 15 million degrees Celsius