ostwald's viscometer

简明释义

奥斯特瓦尔德粘度计

英英释义

例句

1.The Ostwald's viscometer 奥斯特瓦尔德粘度计 is essential for determining the flow properties of polymers.

对于确定聚合物的流动特性，奥斯特瓦尔德粘度计 Ostwald's viscometer 是必不可少的。

2.We compared the results from the Ostwald's viscometer 奥斯特瓦尔德粘度计 with those from a different type of viscometer.

我们将奥斯特瓦尔德粘度计 Ostwald's viscometer 的结果与另一种类型的粘度计的结果进行了比较。

3.The Ostwald's viscometer 奥斯特瓦尔德粘度计 allows us to measure viscosity at different temperatures.

奥斯特瓦尔德粘度计 Ostwald's viscometer 使我们能够在不同温度下测量粘度。

4.In our chemistry lab, we frequently use the Ostwald's viscometer 奥斯特瓦尔德粘度计 to measure the viscosity of various liquids.

在我们的化学实验室中，我们经常使用奥斯特瓦尔德粘度计 Ostwald's viscometer 来测量各种液体的粘度。

5.When conducting experiments, make sure to calibrate the Ostwald's viscometer 奥斯特瓦尔德粘度计 before use.

在进行实验时，确保在使用前对奥斯特瓦尔德粘度计 Ostwald's viscometer 进行校准。

作文

The study of fluid mechanics is a fundamental aspect of physics and engineering, and one of the key parameters that scientists and engineers often need to measure is viscosity. Viscosity is a measure of a fluid's resistance to flow, which can significantly affect various processes in industries such as chemical manufacturing, food production, and pharmaceuticals. To accurately measure viscosity, researchers commonly use instruments known as viscometers. One of the most renowned types of viscometers is the Ostwald's viscometer (奥斯特瓦尔德粘度计), which has been widely utilized for its precision and simplicity.The Ostwald's viscometer is a capillary viscometer that operates on the principle of measuring the time it takes for a specific volume of liquid to flow through a narrow tube under the influence of gravity. This method allows for the determination of the kinematic viscosity of a fluid, which is essential for understanding how that fluid behaves under different conditions. The design of the Ostwald's viscometer consists of a glass tube with two marked points—one for the upper meniscus and one for the lower meniscus—along with a reservoir that holds the liquid sample.To use the Ostwald's viscometer, the user first fills the reservoir with the liquid whose viscosity is to be measured. Once the liquid reaches the upper mark, it is allowed to flow through the capillary tube. The time taken for the liquid to travel between the two marked points is recorded. This time, along with the dimensions of the capillary tube and the density of the liquid, can be used to calculate the viscosity using the equation derived from Poiseuille's law.One of the advantages of the Ostwald's viscometer is its ability to provide consistent results across a wide range of viscosities. It is particularly effective for Newtonian fluids, which have a constant viscosity regardless of the applied shear rate. However, it is important to note that the Ostwald's viscometer may not yield accurate results for non-Newtonian fluids, which exhibit variable viscosity depending on the shear rate.In laboratory settings, the Ostwald's viscometer is often preferred due to its straightforward operation and the minimal amount of sample required for testing. Additionally, it allows for easy cleaning and reuse, making it an economical choice for many researchers. Over the years, this instrument has played a crucial role in various scientific studies and industrial applications, helping to enhance our understanding of fluid dynamics.In conclusion, the Ostwald's viscometer (奥斯特瓦尔德粘度计) remains an essential tool in the field of fluid mechanics. Its ability to accurately measure viscosity has made it invaluable in both academic research and practical applications. As industries continue to evolve and demand precise measurements of fluid properties, the Ostwald's viscometer will undoubtedly remain a staple in laboratories around the world.