The Capillary Tube Apparatus is a precision physics laboratory setup designed to study surface tension, capillary action, and capillary rise in liquids. It provides a stable and adjustable platform for observing the rise of liquid in capillary tubes of different bore sizes.
The apparatus features a slow-motion vertical stand fitted with a 10 cm diameter circular aluminium platform, which can be raised or lowered through coarse adjustment and locked securely with a thumb screw. A fine adjustment mechanism allows precise positioning during observations. The complete assembly is mounted on a heavy circular metal base with two levelling screws for proper stability and alignment.
It is supplied with a support rod and connector to hold the capillary tube clamp. The clamp accommodates three capillary tubes of different bore sizes and includes a pointer for accurate measurement of capillary rise. This apparatus is ideal for schools, colleges, universities, and educational physics laboratories.
Experimental Objectives
To study capillary action in liquids. To determine the surface tension of a liquid by capillary rise method.
To observe the rise of liquid in capillary tubes of different bore sizes. To understand the relationship between capillary radius and height of liquid rise. To demonstrate the effect of surface tension in narrow tubes.
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