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Ryan Reed
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I know that particles differ in size such as the electron is smaller than the proton, but why is this?
I have never seen any physicist use "size" in that way.DeldotB said:A down quark is much "smaller" than a top (or truth) quark, but its smaller in the sense that it has less mass.
Right. I am being informal about it.mfb said:The electron does not have known size, it is expected to be point-like.
The proton is a composite particle, its size is the volume those particles are in - which is non-zero. This is a completely different "size" definition than the size of the electron. If you ask for the volume where an electron is in an atom, for example, you get the size of the atom (approximately), which is much larger than a proton.
I have never seen any physicist use "size" in that way.
Particle size is determined by several factors, including the composition of the particle, the method of measurement, and the environment in which the particle exists.
Particle size can be measured using various methods, such as microscopy, light scattering, and sieving. The choice of measurement method depends on the size range of the particles and the properties of the sample.
Particle size is a crucial factor in many scientific fields, including chemistry, physics, and materials science. It can affect the properties and behavior of a material, such as its reactivity, strength, and solubility.
Yes, a particle's size can change due to various processes, such as grinding, precipitation, and agglomeration. These changes can affect the properties of the particle and its behavior in a given environment.
Particle size can be measured in various units, such as nanometers, micrometers, and millimeters, depending on the size range of the particles. The International System of Units (SI) recommends using the nanometer (nm) as the standard unit for particle size measurement.