As far as the tile roofs, they last a long time. It isn't the tile that is the issue, it's the felt (or paper) underneath that gets replaced. Mine is 25 years old, has not been replaced yet. Some neighbors have had theirs redone, but many have not as yet. 04-06-2011, 12:00 AM.
Particle Accelerators Could Be Used to Produce Energy (and Plutonium) Particle accelerators, which are not renowned for their real-world applications, could in fact be used to produce energy, according to a 34-year-old research paper that resurfaced this week.
A collider is a type of a particle accelerator with two directed beams of particles. In particle physics colliders are used as a research tool: they accelerate particles to very high kinetic energies and let them impact other particles.he proton-proton collision is the primary operation method, but the LHC has also collided protons with lead nuclei for two months in 2013 and used leadâlead collisions for about one month each in 2010, 2011, and 2013 for other investigations.