According to Indian media TheHindu, the 2015 International Year of Light celebration, hosted by the School of Physical Sciences of Periyar University, recently highlighted how improving global light-based technology for sustainable development and for energy, education, Challenges in areas such as agriculture and health provide the importance of solution awareness.
PuspenduDas, professor of the Department of Inorganic Chemistry at the Indian Institute of Technology, said at the meeting that sunlight, LEDs and lasers would be the three most important sources of light affecting human life in the 21st century.
In recent years, solar photovoltaic processes have been used primarily to convert sunlight into electrical energy through various semiconductors. With the depletion of petroleum resources, solar energy has become the only clean energy source that can meet the energy needs of future generations.
At the moment, LEDs are not only illuminating the world through a variety of applications, but LEDs are also used to make high-resolution displays for smartphones, computers and televisions. Led lights are rapidly replacing fluorescent tubes, and even high-definition LCD screens have adopted white LEDs.
Professor Das pointed out that shortly after the invention of laser technology in 1960, it brought revolution and spawned several new branches of science and engineering.
Thanks to laser technology, nonlinear optics, holography, precision cutting, welding, drilling, laser-guided defense equipment, optical communications and laser-based surgical instruments have all made progress.
Through optical communication, lasers make the world very small. If there is no laser, Raman spectroscopy will become obsolete.
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