Gunsmoke tops the list as the longest-running dramatic series in network television history with 635 episodes. Set in Dodge City, Kansas, during the 1870s, Gunsmoke began as a radio program in 1952, switched to the land of visual entertainment in 1955, and finally ended its 20-year run in 1975. NEXT.
Silver soldering. Hard soldering or silver soldering is used to join precious and semi-precious metals such as gold, silver, brass, and copper. The solder is usually referred to as easy, medium, or hard. This refers to its melting temperature, not the strength of the joint. Extra-easy solder contains 56% silver and has a melting point of 1,145 Â°F (618 Â°C). Extra-hard solder has 80% silver and melts at 1,370 Â°F (740 Â°C).
The most common divisions of melting temperatures in silver solder are: 1  IT: the highest melting temperature, used on fine silver when enameling; 2  Hard: used for bezels and as a first step when doing multiple soldering; 3  Medium: used mostly when only one or two steps will be done; 4  Easy: used as a final solder or when soldering on findings; and.