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.
Particle accelerators as they currently exist would be terrible weapons. They are typically giant structures with one or two small rooms where the particle beam is actually delivered. You canât steer or redirect that beam to any great degree - so imagine that your bathroom sink delivered a highly lethal stream of water.