■光与皮肤(国外英文资料).docVIP

■光与皮肤 Light and skin The natural science of skin whitening Light is the greatest element in the world, there is no light and there is no world without us. In the original chaotic world, because of a ray of sunshine and the ocean algae produce photosynthesis, was born on the earths oxygen, finally evolved into all creatures on earth, including our human beings! Light is related to us, but it is only the first step that human beings have made. With the development of modern physics and medicine, there is a clear understanding of the mechanism of light. It is because of these effects that light is used to improve our physical condition. So how does light interact with the skin? Now that our skin is full of scabbers, why do we need laser therapy? What secrets are hidden in the light? Whats the difference between the laser and the light were exposed to... Right? How did the noil scientist study light The fifteenth century, every Nicholas Copernicus, the polish science because sunlight, put forward to the center of the universe theory the sun, from now on, from the theory laid the foundation of light and the nature. Arguably, the great liberation of human thought began with the discovery of light. In 1581, Copernicus, the German scholar Johannes Kepler discovered the spectral theory, due to the use of spectroscopy, scientists found further molecules, atoms, the nucleus of the world and the human genetic code of DNA, and even leads to the formation of a universe theory, Einsteins general theory of relativity... Its all about light. The laser theory comes from Einsteins theory of photons. In 1905 Einstein proposed the quantum theory of light, which states that the essence of light is composed of photons (photons) that determine energy. Like other particles, the energy of a photon is proportional to the frequency of light. Integrated optical field get rapid progress in the 1960 s, with the corresponding nonlinear spectroscopy, including the doppler width elimination of satu