The contact angle of retail | ShengDing instrument (certified) | Enping contact angle provided by the Dongguan Sheng Ding Precision Instrument Company. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.dgshengding.com) is specialized in the "contact angle measurement, tensile tester, drop angle detector, tables, interface instrument" of the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr. The above mentioned method Conic round Act would have been included, because the circle of a quadratic equation is merely a special case. When the volume of the droplet is large, or a large proportion of the liquid, or surface tension of the liquid is relatively small, the formation of a significant breach of its spherical shape, can now use this approach could result in a large measurement errors can be as large as tens of degrees. So be sure to pay attention to the limitations of this approach. Advocates of this approach is only used in calculating the droplet droplet contact angle of less than 30 degrees, or the shape of equal or close to the ball. C2000 series with a momentary contact angle measurement freeze, automatic continuous photography, high-speed photography three kinds of shots the way the contact angle of retail, even volatile liquid can also ensure accurate measurement. Meanwhile, outside the influence of subjective factors tangent is the biggest problem the contact angle wholesale, JC2000 series of contact angle measurement of the geometric computing software into the corner to make contact with plant sales, the contact angle is no longer human judgment. Photon correlation spectroscopy (photon correlation spectroscopy) dynamic light scattering method (dynamic light scattering) when the particle size is less than the wavelength of light, the Rayleigh scattering theory, the angular distribution of the particle size is independent of the relative intensity of the scattered light, scattered light can not pass through spatial intensity distribution (i.e., the above-described static scattering method) to determine the particle size of the contact angle, dynamic light scattering has made up for in this, it will scatter a certain frequency shift of the scattered light, scattered light at a certain point in space to form an interference, the point light intensity decay time correlation function has a particle size with particle one to one relationship. By detecting the scattered light intensity changes with time, and the correlation operation the size of the particle size can be drawn. Nevertheless, the obtained dynamic light scattering average particle diameter of the particles is difficult to obtain a particle size distribution parameter. Dynamic light scattering method is adapted to detect submicron particles, measuring range 1nm ~ 5? M.