Negative refractive Editor's note: the following content for the staff would like to relevant departments, related majors and related lovers propylene price quotes for reference, the general public can not do in-depth understanding of this. Negative refractive index (permittivity and negative permeability simultaneously) problem is very active in recent years, an international field of research. When the electromagnetic wave propagation in the negative refractive index material in propylene glycol, the electric field E, the magnetic field B and wave vector k of the three left-handed helix composed of propylene glycol factory direct relationship, which is also known as negative refractive index material left-handed material (left-handed materials). Veselago 1968 was first conceived in the theory of left-handed material .Pendry in 1996 and 1999, respectively, indicating that you can use a thin metal wires and a seam ring resonator array structure permittivity ε and permeability μ while negative artificial media. Occurred in 2001, Smith et al.'s Method followed Pendry constructed the permittivity and negative permeability simultaneously artificial medium, and the first experimental observation of the microwave band of the electromagnetic wave through this artificial medium and air interface The negative refraction. Despite the early people on Smith et al. Experiments have many arguments, but more careful experiments since 2003 have confirmed the negative refraction. China's coal-dominated energy minerals to 2010 primary energy consumption structure, coal accounted for clean coal technology to develop efficient and clean use of coal resources in China to promote the coordinated development of energy and environment to meet about 60 percent of the national economy needs rapid and stable development is extremely important strategic significance of clean coal gasification technology as an important part of it has a leading position in the low-cost coal transformed into clean gas can be used to produce chemical products such as methanol and dimethyl ether, ammonia can be used for direct and indirect coal liquefaction combined cycle power generation IGCC and coal gasification-based polygeneration and other areas of Shijiazhuang propanediol | Shelf propanediol | Xiang dry chemical (certified merchants) provided by the Jinan Chemical Co., Ltd., Cheung dry. Jinan Cheung Dry Chemical Co. (www.xiangqianhuagong.com) (www.dilunyierchun.com) is specialized in the "glycol" enterprise, the company of "honesty, hard service" concept, to provide you with the most quality products and services. Welcome to inquire! Contact: Mr. You can also access (www.dilunyierchun.com/supply_details_43263695.html), for more information about the company.