Back pain is also common with increased cell phone use, especially if you hold the phone between your neck and shoulders as you multitask. Long periods of cell phone use cause you to arch your neck and hold your body in a strange posture. This can lead to back pain, says Healthcentral.com.
A recoilless rifle (RCLR) or recoilless gun is a type of lightweight tube artillery that is designed to allow some of the propellant gases to escape out the rear of the weapon at the moment of ignition, creating forward thrust that counteracts some of the weapon's recoil.lder recoilless rifles are still used by the U.S. National Park Service and the U.S. Forest Service as a system for avalanche control. The Washington State Department of Transportation uses a 105 mm recoilless rifle for avalanche control on Interstate 90.
The first recoilless rifle to enter service in Germany was the 7.5 cm Leichtgeschuetz leichtgeschÃ¼tz (40 light 'gun), 40 a simple 75 mm smoothbore recoilless gun developed to Give german airborne troops artillery and-anti tank support that could be parachuted into. battlehe 75 mm recoilless rifle required at least two men to move it and could throw its shell several thousand yards with precision. Newer models replacing these were the 90 mm M67 and 106 mm M40 (which was actually 105 mm caliber, but designated otherwise to prevent confusion of ammunition with the earlier model).