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How can you measure the diameter of capillary tube by using vernier caliper in traveling microscope?
To measure the diameter of a capillary tube using a traveling microscope and vernier caliper, place the capillary tube on a flat surface. View the capillary tube through the traveling microscope to measure the external diameter. Then, use the vernier caliper to measure the internal diameter by gently inserting the capillary tube between the jaws of the caliper to get an accurate measurement. Subsequently, calculate the average diameter using the two measurements.
What name is given to a tube of very small diameter?
capillary
How capillary rise and diameter depends?
Capillary rise is influenced by the diameter of the capillary tube; specifically, narrower tubes exhibit a greater height of liquid rise due to stronger adhesive forces between the liquid and the tube walls relative to the cohesive forces within the liquid. This phenomenon is described by the capillary action equation, where the height of rise is inversely proportional to the diameter of the tube—smaller diameters lead to higher capillary rise. As the diameter increases, the height of the liquid column decreases, demonstrating the strong relationship between tube size and capillary action.
What is the tendency of a liquid to rise in a small diameter tube called?
The 'capillary effect'. See the link.
How high can water rise in a capillary tube 30 micrometers in diameter?
4.6
Why is a capillary tube thought of as a dry-type?
The Capillary tube metering device is used primarily on small fractional-horsepower refrigeration systems that have relatively constant evaporator heat loads. These systems are hermetically sealed, leak free systems with dry-type evaporators that use a minimum of refrigerant. The capillary tube metering device is a fixed bore device, itcontrols refrigerant flow by pressure drop.
Why is capillary tube narrow in thermometer?
The capillary tube in a thermometer is narrow to allow for precise measurements of temperature changes. A narrow diameter increases the sensitivity of the liquid inside the tube, enabling it to expand or contract more noticeably with small temperature fluctuations. This design ensures that even slight changes in temperature result in a clear, measurable movement of the liquid column, enhancing the accuracy of the readings. Additionally, the narrow tube helps minimize the effect of external factors, such as air currents, on the liquid's movement.
Why do liquid rise of fall in a capillary tube?
It is because of the surface tension between liquid molecules and the inner surface of the tube. The meniscus height is determined by the inner diameter of the tube. The smaller the diameter, the higher the meniscus will climb due to capillary action.
The height of a liquid in a capillary tube is not dependent on?
the height of a capillary tube is not dependent on
Why mercury falls in capillary tube?
Mercury falls in a capillary tube due to the combination of capillary action and gravity. Capillary action is the tendency of a liquid to be drawn up into a narrow tube against the force of gravity. When the adhesive forces between the mercury and the walls of the capillary tube are greater than the cohesive forces within the mercury, the mercury will move downward in the tube.
How high can water rise in a capillary tube that is 0.1 millimeters in diameter?
The height to which water can rise in a capillary tube is calculated using the equation h = 2γcos(θ)/ρgr, where γ is the surface tension of water, θ is the contact angle, ρ is the density of water, g is the acceleration due to gravity, and r is the radius of the tube. For a tube with a diameter of 0.1 mm, the radius would be 0.05 mm. Water typically has a contact angle close to 0, resulting in a high degree of wetting, allowing it to rise several millimeters in a capillary tube of this size.
Why water in a tumbler goes in the capillary tube?
Water rises in a capillary tube due to capillary action, which is the result of cohesive forces between water molecules and adhesive forces between water and the tube's surface. The narrow diameter of the tube enhances these forces, allowing the water to climb against gravity. This phenomenon is particularly pronounced in materials with high surface tension, such as water, making it an essential principle in various biological and physical processes.
