Essays on Surface Tension

Introduction

The exchange of respiratory gas is limited by the capacity of the respiratory muscles to circulate air in the lung. Ventilation fails when muscles do not have the capacity to cope with the load brought by the mechanics of the pulmonary system. It is crucial to comprehend the mechanics of respiration/breathing not only for purposes of diagnosing how the system has failed and to offer the correct prescription for treatment of the failure, but to be capable of providing the most effectual temporary respiratory support through the use of a mechanical ventilator, as well. The first category explains the ...

Introduction

Tension forces act on liquid surfaces, the thread in them is pulled into circular arcs. The pull is referred to as surface tension of the liquid. Surface tension exists uniformly in all directions. The forces affect the shape and motion of liquids that have open surfaces. Tension forces can be understood regarding forces that occur between the molecules. Repulsion occurs in molecules when they are close but attract when they are far from each other. Inside the liquid, molecules are close to each other. Thus, there are slight repulsions. Molecules at the surface of the liquid are some distance ...

Purpose

This experiment sought to determine the value of the surface tension of water and paraffin oil from the downward pull on a horizontal ring fastened to a spring.

Apparatus

The following materials were used in the experiment: Platinum-iridium ring equipped with stirrup (circumference L=4cm)

Spring

Paraffin oil Distilled water Petri dish Weight pan Striker Level Jolly balance with adjustable platform Scale to determine the paraffin oil density Suitable weights Bunsen burner Tweezers Introduction Surface tension refers to the energy required to expand a liquid’s surface area (Ozment, John, and Conrad, 391). Liquid molecules are attracted to one another by adhesive ...