tuhin4u (Unstopable Lover + Mariana World DIAMOND member): Solar energy is radiant light and heat from the sun harnessed using a range of ever-evolving technologies such as solar heating, solar photovoltaics, solar thermal electricity, solar architecture and artificial photosynthesis. *
06-10-14 - 05:24:10

tuhin4u (Unstopable Lover + Mariana World DIAMOND member): Solar technologies are broadly characterized as either passive solar 0r active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass 0r light dispersing properties, and designing spaces that naturally circulate air. *
06-10-14 - 05:25:31

tuhin4u (Unstopable Lover + Mariana World DIAMOND member): In 2011, the International Energy Agency said that "the development of affordable, inexhaustible and clean solar energy technologies will have huge longer-term benefits. It will increase countries’ energy security through reliance on an indigenous, inexhaustible and mostly import-independent resource, enhance sustainability, reduce pollution, lower the costs of mitigating climate change, and keep fossil fuel prices lower than otherwise. These advantages are global. *
06-10-14 - 05:27:08

tuhin4u (Unstopable Lover + Mariana World DIAMOND member): The Earth receives 174 petawatts (PW) of incoming solar radiation ( insolation) at the upper atmosphere. Approximately 30% is reflected back to space while the rest is absorbed by clouds, oceans and land masses. The spectrum of solar light at the Earth's surface is mostly spread across the visible and near- infrared ranges with a small part in the near-ultraviolet. *
06-10-14 - 05:28:45