Metal expanding due to heat — aka “thermal expansion” — is a “new phenomenon,” according to the National Institute of Standards and Technology. Yet their report on how World Trade Center 7 mysteriously collapsed is drawing criticism from a large group of professional architects and engineers, who want to know what the agency is covering up.
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Back Up a Web Server
So you’re a good little monkey and you have a backup strategy for all your local PCs. Perhaps you use rsync, Time Machine or similar backup software mirroring your files to external drives on a regular basis. That is some safe thinking that deserves a nice big pat on the back. But wait, what about your remote web server? More>>
Cheap Catalyst Could Turn Sunlight, Water Into Fuel
A new catalyst makes it feasible to split water with solar power.
MIT chemists say the catalyst, used in conjunction with cheap photovoltaic solar panels, could lead to inexpensive, simple systems that use water to store the energy from sunlight.
In the process, the scientists may have cleared the major roadblock on the long road to fossil fuel independence: Reducing the on-again, off-again nature of many renewable power sources.
The catalyst enables the electrolysis system to function efficiently at room temperature and at ordinary pressure. Like a reverse fuel cell, it splits water into oxygen and hydrogen. By recombining the molecules with a standard fuel cell, the O2 and H2 could then be used to generate energy on demand. More>>