Jonny Wilkinson's side raced into an early lead as a superb try from Rory Lamont and another from Matt Henjak put the under-strength visitors in charge.

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She is put through a mini-bullfight complete with a matador, picadores (lancers on horseback) and banderilleros (who thrust barbed darts into the animal) to test her speed, strength and instinct to charge.

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Exam boards said they were offering the English resits free of charge to schools as a response to strength of feeling on the issue.

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This massively increases their surface area and hence the charge they can hold, but without impairing the physical strength of the material.

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In 2009, Gatland's second Six Nations in charge, he made numerous changes in a bid to improve the side's strength in depth.

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The amount of charge that can be stored depends on the surface area of the electrodes, the strength and composition of the insulation between them, and how close they are together.

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The opening try demonstrated Argentina's counter-attacking strength as a turnover on the edge of their own 22 led to Felipe Contepomi mounting a charge from deep.

BBC: Argentina 16-24 Scotland