Existing theory requires lepton number to be conserved (that is, neither created nor destroyed).
Remarkably, this symmetry of physical laws under a change of place or time implies that momentum and energy are conserved, that is to say they cannot be created or destroyed.
After coming alive as a spokesman of the counterculture, he tried to conserve that stance, returning to the same targets repeatedly, often with superb aim, and becoming an eminent cultural critic in the process.
The time Wiggins has got on his rivals means he can concentrate on conserving that lead, especially with another time trial to come in the penultimate stage of the race on 21 July.
The time Wiggins has got on his rivals means he can concentrate on conserving that lead, especially with another time trial to come in the penultimate stage of the race on 21 July". "All the work is done," Sutton told BBC Sport.
Ruthless in weeding out second-best shots, he conserved the ones that passed muster in vellum-bound volumes that indexed his travels around the world and sat proudly in his Lake District home.
How can we conserve that future?
"But barter helps you conserve that scarce resource".
If a species of tree that lives only in part of Florida is endangered, the solution is straightforward: try to conserve that little patch of habitat.
Moreover, US-led sanctions against Iran will not persist indefinitely and, while they do, are providing a deferred benefit of conserving that nation's energy resources.
Indigenous peoples traditionally develop a set of conservation measures that are passed down from one generation to the next, and as a result they should be seen as the best people to conserve that land.
