While only a doctor can diagnose your anxiety, I have developed a free 7 minute anxiety test that can provide you with information on your anxiety profile and the anxiety disorders you appear to identify with based on your answers. Start the test here.
Solar Panel installation vs. Solar Shingles. The major difference between solar roof shingles and solar panels is in the installation process. Installers usually need to bolt solar panels onto the roof, which requires drilling through the roof and can violate its warranty.
Polycrystalline Silicon Solar Cells. The first solar panels based on polycrystalline silicon, which also is known as polysilicon (p-Si) and multi-crystalline silicon (mc-Si), were introduced to the market in 1981. Unlike monocrystalline-based solar panels, polycrystalline solar panels do not require the Czochralski process.