On Tuesday, Egyptians broke through a barrier of fear".
By Friday night, I felt like I had broken through a barrier".
Shortly after dawn, about 100 riot police pushed their way through a barrier in formation.
Permeation is the diffusion, through a barrier, of a substance in solution.
So what happens when you shoot light at a detector, through a barrier with two holes in it?
The tunnelling of a particle through a barrier is one of the most fundamental and ubiquitous quantum processes.
Tunnelling of a particle through a barrier is one of the most fundamental and ubiquitous quantum processes.
He dug a hole under the perimeter fence, wriggled through a barrier of double razor wire and fled.
E-cigarette brand Vype ran a ad campaign featuring a man and woman who become enveloped and then pass through a barrier of smoke.
She said that about two years ago a motorist was killed after breaking through a barrier and hitting a truck where highway road crews were working.
Zoo officials said the four-year-old climbed through a barrier at the Gorilla World exhibit and fell 10ft to 12ft into the moat on Saturday afternoon.
