If you turn off the main shut-off valve and the noise stops, there is a leak inside your home. If the hissing noise did not stop when you turned off the valve, the leak is probably outside your home. Outside water leaks can sometimes be detected by a wet spot in the yard or very lush grass in one spot.
The Manned Maneuvering Unit is an astronaut propulsion unit that was used by NASA on three Space Shuttle missions in 1984. The MMU allowed the astronauts to perform untethered EVA spacewalks at a distance from the shuttle. The MMU was used in practice to retrieve a pair of faulty communications satellites, Westar VI and Palapa B2. Following the third mission the unit was retired from use. A smaller successor, the Simplified Aid For EVA Rescue, was first flown in 1994, and is intended for emergen
QEMU (Linux, Free). QEMU is a powerful virtualization tool for Linux machines built upon the back of the KVM system (Kernel-based Virtual Machine). QEMU executes guest code directly on the host hardware, can emulate machines across hardware types with dynamic translation, and supports auto-resizing virtual disks.our primary OS can be Windows 7 64-bit, for example, but with enough memory and processing power, you can run Ubuntu and OS X side-by-side within it. Earlier this week we asked you to share your favorite virtual machine application, and now we're back to highlight the five most popular picks.