john dalton discovered there are small particles inside the atom.
john dalton discovered there are small particles inside the atom.
who discovered there are small particles inside the atom?
john dalton
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if a free-flowing powder is mixed with a cohesive powder an interactive mixture can be obtained. the cohesive particles adhere to the free-flowing particles (now called carrier particles) to form interactive units as shown in figure b. an interactive mixture may not contain free aggregates of the cohesive powder, which means that all small particles must be adhered to the larger ones. the difference from an ordered mixture is instead that all carrier particles do not need to be of the same size and a different number of small particles attached to each one. a narrow size range of the carrier particles is preferred to avoid segregation of the interactive units. in practice a combination of a random mixture and an interactive mixture may be obtained which consists of carrier particles, aggregates of the small particles and interactive units.
powder mixture