The phrase "a medium when the" is not correct and appears to be incomplete in written English.
It may be used in contexts discussing mediums or methods, but it requires additional information to convey a clear meaning.
Example: "A medium when the message is unclear can help facilitate communication."
Alternatives: "a method when the" or "a channel when the".
England's early coin became a medium when the government began to spend and tax in that unit of account, took coin as a mode of payment, and allowed it to be transferred between people in the meantime.
The simplest example is the violent and natural motion of a mixed body in a medium, when the acting power has to overcome the external resistance of the medium as well as the internal resistance of an element being moved away from its natural place.
A body is treated as a microstretch medium when the directors are restricted with breathing-type microdeformations only.
There is an enhancement by up to a factor of three for a model oxygen reduction reaction in an alkaline medium when the nanowires in the electrode are in a magnetized state.
Diffusion-controlled reactions in a porous medium, when the distribution of the reactants in the medium is uniform, are investigated.
But the Internet showed its limitations as a mass medium, when the masses logged on, as the most popular news Web sites were all but inaccessible in the first hour after the trade center attacks.
The chapter describes the theory of Schlumberger soundings starting from the simplest model of a two-layered medium when the current electrode is located on the earth's surface, progressing to a discussion on effect of charges on the surfaces of a two-layered medium, formulation of the boundary-value problem, solution of Laplace's equation, and asymptotic behavior of the field.
The optical properties of composite materials can often be approximated using a uniform effective medium when the length scales associated with the local variations in the permittivity are small compared to the wavelength of the light in the medium.
Criticality is the state of a nuclear chain reacting medium when the chain reaction is just self-sustaining (or critical).
Cellulose acetate phthalate is a pH-sensitive polymer that dissolves in aqueous medium when the pH is above 6.2.
Reduce the heat to medium when the mixture's consistency turns into a thin, foamy jelly.
