Brazil earned a memorable third goal after 69 minutes, Vagner Love breaking free down the left and slotted an inch-perfect pass between two defenders to Alves.

BBC: Brazil victorious in Copa America

For such a particle, it is possible to work out its velocity (from the time taken to pass between the two layers) and its trajectory (from the relative positions of the elements triggered in each sensor layer).

ECONOMIST: Orbital debris

Burke collected a Steven Davis pass from the left before squeezing the shot between two green jerseys, leaving Ma-Kalambay with no chance as the ball nestled in the goalkeeper's right-hand bottom corner.

BBC: SPORT | Football | Scottish Cups | Rangers 1-0 Hibernian

David Bentley then fired a low 20-yard volley inches wide, while Bent volleyed tamely at Mark Schwarzer having squeezed between the two central defenders to reach Tom Huddlestone's raking pass.

BBC: Fulham 2-1 Tottenham

Most incidents over the past two years have involved armed groups using Tunisia's southern desert to pass between Algeria and Libya.

NPR: Jihadi Peril Makes Its Way To Tunisia

Ameobi proved the difference between the two sides soon afterwards, though, latching on to Nolan's pass to turn and shoot beyond Camp.

BBC: Sport - Football - Newcastle 2-0 Nottm Forest

But this dilemma occasionally comes up when the two chambers pass different versions of the same bill, and it is usually worked out by agreements between lawmakers.

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