It has been billed as a 'miracle material' that could revolutionise computing and speed up the internet because of its qualities as a super efficient conductor of electricity.

Usually the patient's saliva or toothpaste suffices as a conductor of electricity.

The gas gets ionized after passage of electric current through it and it becomes a conductor of electricity.

Sure enough, both gold and silver are unusually good as conductors of electricity; gold, moreover, has the feature of being chemically inert and, hence, non-tarnishing.

They are all excellent conductors of electricity.

Like the screen on a smartphone, the system uses capacitive technology to detect the presence of an electrical conductor; in this case, the driver's hand.

Without water in the air, the atmosphere becomes a very poor electrical conductor, and so charges build up.

Health and safety investigators will examine whether damp grass acted as an electrical conductor after the casing on the cable was split.

A good electrical conductor, such as copper, also conducts heat well.

Each high voltage cable creates an electric field around itself, in the same way as any live electrical conductor.

The orchestra's trumpeted principal guest conductor has talent in plenty, but its effect can be contradictory in performances of the central classical repertoire.

An evening performance was jeopardised by the non-appearance of a guest conductor.

This year's programme was partly a tribute to the orchestra's veteran guest conductor.

After leaving the position of music director, he was a constant presence as a guest conductor.

His evening concert with the orchestra of which he was principal guest conductor from 1985 to 1988 was an exhilarating display of compositional immaculateness.

The orchestra conductor has one advantage in that he has professional critics who tell him how well he has done.

I see my role as an orchestra conductor or a soccer coach.

His hands move as talks, somewhat like an orchestra conductor.

He used his arms as though he were an orchestra conductor.

Nebel compared his endeavors with those of an orchestra conductor who rehearses a score with an orchestra.

Let me offer a new model: the symphony conductor.

He continued to distinguish himself as a concert violinist, and then as a symphony conductor.

Some symphony conductors have been forced out because they spent more money than was in the budget.

Some vocal coaches, for example, are rehearsal pianists with decades of experience accompanying singers, or former or current choral, music theater, or symphony conductors.

I couldn't believe a train conductor was acting this way.

At every turn the train conductor thanked people for their understanding.

He was a freight train conductor but could not work.

The train conductor was severely injured, with 15 passengers less seriously hurt.

The first involves doing the same job at a higher level, such as a senior train conductor, senior house doctor or senior lecturer.