Tension

distending pressures within the body. Terry Jardins explained in his book, Cardiopulmonary Anatomy & Physiology Essentials of respiratory care that “Laplace’s law describes how the distending pressure of a liquid bubble is influenced by (1) the surface tension of the bubble and (2) the

INTRODUCTION When cement is mixed with water in order to prepare concrete, the hardened concrete formed after hydration is not a solid mass but a porous material. There is formation of pores due to water which is initially added. Water occupies some fraction of the total initial volume and after the hydration of cement water is held physically, chemically or is adsorbed on product after hydration. This leads to formation of different types of pore structure inside the hydrated cement

"Cheerios effect". In fluid mechanics, the Cheerios effect is the phenomenon that occurs when floating objects that don't normally float attract one another. At the root of the Cheerio Effect are basic physics concepts such as buoyancy, surface tension, gravity, and the meniscus effect. Buoyancy or density of an object compared to the liquid or air surrounding it, determines whether an object submerged in water or surrounded by air will sink, float, or stay put. Buoyancy is what keeps objects

ABSTRACT Microfluidics biochips are revolutionary devices in the field of clinical diagnostics, DNA analysis and molecular biology. Biochips involve various fields of science and engineering i.e., physics, chemistry, biochemistry, nanotechnology, fabrication technology and computer science. It uses small volume fluids on scale of micro to nano liter for automatically carrying out the reactions needed for some biochemical assays. In this report I have covered basic overview of biochips, kinds of biochips

load the destination plate. The Echo inverts the destination plate and takes it in and then positions it directly above the source plate. The source plate is de-ionized as it is taken in to ensure straight travel of the liquid droplets. The surface tension keeps the liquid intact in the destination plate even though it is inverted. As you are loading the destination plate, a survey of the source plate is being conducted by the Echo which helps to determine whether all the wells have the required amount

To understand the Marangoni effect it is essential to understand Rayleigh-Bénard instability. The Rayleigh-Bénard convection instability occurs in a plane horizontal layer of fluid heated from the bottom. The fluid develops a regular pattern of convection cells known as Bénard cells. The convection patterns are the most carefully examined example of self-organizing nonlinear systems. Gravity and hence Buoyancy, is the major driving force for the Rayleigh-Bénard-Marangoni convection instability.

from vastly different backgrounds, but recognized the importance of being able to calculate a molecules thickness (1). They later discovered methods of calculating the thickness of the oil that was dispensed on water by examining the drop-in surface tension when a certain volume of oil was deposited on a water surface (1). Lastly, the most notable scientist in the field of surface science and the founding expert of Langmuir Monolayers, Irving Langmuir. He was a famous American chemist and physicist

A heating bath is used in the laboratory to allow the chemical reaction to occur at an elevated temperature around 1000C. The beaker is a glass vessel which contains the chemical solutions for the purpose of coating. It is placed in the electroless bath where the chemicals are being heated up. The glass rod is used to stir the chemical where the magnetic stirrer is not necessary. The tongs are used to lift the bath after the coating is completed. Tri-sodium citrate and thallium acetate are the chemicals

it’s happening everyday. Using fluid mechanics, we can determine why floating objects come together due to surface tension, viscosity and buoyancy (Grayson, 2014). This cheerios effect also applies to other floating objects such as paperclips. The main principles that cause objects to float together are surface tension, buoyancy and viscosity. Surface tension is caused by the presence

Three containers are filled with water to the same height and have the same surface area at the base: hence the water pressure and total force on the base of each is the same. Yet the total weight of the water is different for each. Explain this "hydrostatic paradox" The key to this problem is that the force on a container due to the hydrostatic pressure is always perpendicular to the surface of the water. According to Newton’s 3rd law, the container will push back on the water in the exact opposite