Substitute this value to the formula for circumference: C = 2 * π * R = 2 * π * 14 = 87.9646 cm . You can also use it to find the area of a circle: A = π * R² = π * 14² = 615.752 cm² . Finally, you can find the diameter – it is simply double the radius: D = 2 * R = 2 * 14 = 28 cm .

English Language Learners Definition of diameter : a straight line from one side of something (such as a circle) to the other side that passes through the center point. : the distance through the center of something from one side to the other.

It is defined as the diameter of a sphere that has the same volume/surface area ratio as a particle of interest. SMD is typically defined in terms of the surface diameter and volume diameter.

5. D[3,2] is the surface area moment mean or the Sauter Mean Diameter (SMD). From our earlier sections, we have seen that each measurement technique produces a different answer because it is measuring a different dimension of our particle.

A sieve diameter is defined as the width of the minimum square aperture through which. the particle will pass. A common sizing device associated with this definition is a series of. sieves with square woven meshes.

Particle Size Conversion

The sieve is used to classify the soil into group like gravelly, sandy or clayey in nature. The sieve number denotes the number of holes present in the sieve within one inch length of the sieve mesh. For example, consider the Number 4 sieve which have a mesh opening of 4.76 mm.

Mesh Size Comparison Chart

Mesh and Micron Sizes

Count the number of square openings from the marked edge of the square made in Step 1 to the opposite marked edge of the square. If that 1 linear inch of screen contains two squares, it is a 2-mesh screen. If that inch contains 100 openings, it is 100-mesh screen.

The standard window screen mesh is 18-by-16 and made out of fiberglass or aluminum. Patio, porch or pool side screens have a mesh size of 18-by-14. The smallest sized mesh is 20-by-20; the tightly woven mesh allows for ventilation while still keeping out tiny insects.

Powder Particle Size Sieving or screening is a method of categorizing a powder’s particle size by running the powder through a specific sized screen. A -6 mesh powder has particles that measure less than 3360 microns. A powder that is -325 mesh has particles that measure less than 44 micron.