how to measure density of an object electronics
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The Tools Used to Measure Density
By Dennis Hartman; Updated February 12, 2018

One of the basic terms used in many natural sciences is density, a physical property defined as an object's mass divided by its volume. This means that to measure density, you typically need to measure an object's mass and volume separately, then calculate its density by dividing the mass by the volume. To measure mass and volume, you need the use of several basic laboratory tools.
Scale
Mass is one of the most easily obtained measurements. Use a scale or electronic balance to determine the object's weight, or mass. This measurement is usually represented in ounces or grams for English and metric systems respectively. When measuring the mass of a liquid, first weigh the container and then tare the scale before adding the liquid.
Graduated Cylinder
The most accurate way to determine an object's volume, especially in the case of an irregularly shaped object, is to immerse it in water and measure the amount of water it displaces. A graduated cylinder large enough to hold both the object and enough water to fully immerse it is the best tool for this job. A graduated cylinder can also tell you the volume of a liquid simply by pouring it into an empty cylinder. Don't use a beaker to determine volume, since the scale printed on the side of a beaker may be less accurate that that on a graduated cylinder, which is especially designed for measuring.
Calculating Density
Once you've measured the mass and volume of an object, you find density with a simple calculation. Divide the mass by the volume to get the density. For example, you measure a quantity of pure water in a graduated cylinder and see it comes to 11.5 ml. You place a plastic weighing dish on a scale and find its mass is 3.2 grams. When you add the water, the total comes to 14.7 grams. Subtract the mass of the dish from the total to get the mass of the water alone, 14.7 - 3.2 = 11.5. Divide 11.5 grams by 11.5 ml to get the density, 1.0 grams per ml.
Home » Physics
The Tools Used to Measure Density
By Dennis Hartman; Updated February 12, 2018

One of the basic terms used in many natural sciences is density, a physical property defined as an object's mass divided by its volume. This means that to measure density, you typically need to measure an object's mass and volume separately, then calculate its density by dividing the mass by the volume. To measure mass and volume, you need the use of several basic laboratory tools.
Scale
Mass is one of the most easily obtained measurements. Use a scale or electronic balance to determine the object's weight, or mass. This measurement is usually represented in ounces or grams for English and metric systems respectively. When measuring the mass of a liquid, first weigh the container and then tare the scale before adding the liquid.
Graduated Cylinder
The most accurate way to determine an object's volume, especially in the case of an irregularly shaped object, is to immerse it in water and measure the amount of water it displaces. A graduated cylinder large enough to hold both the object and enough water to fully immerse it is the best tool for this job. A graduated cylinder can also tell you the volume of a liquid simply by pouring it into an empty cylinder. Don't use a beaker to determine volume, since the scale printed on the side of a beaker may be less accurate that that on a graduated cylinder, which is especially designed for measuring.
Calculating Density
Once you've measured the mass and volume of an object, you find density with a simple calculation. Divide the mass by the volume to get the density. For example, you measure a quantity of pure water in a graduated cylinder and see it comes to 11.5 ml. You place a plastic weighing dish on a scale and find its mass is 3.2 grams. When you add the water, the total comes to 14.7 grams. Subtract the mass of the dish from the total to get the mass of the water alone, 14.7 - 3.2 = 11.5. Divide 11.5 grams by 11.5 ml to get the density, 1.0 grams per ml.
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