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).
Traditional solder that used to be used for soldering in the electronics industry used to be a mixture of tin and lead. Different types of solder are used for different purposes. Solder is of course used in plumbing. The type of solder used for electronics usually contains 60% tin and 40% lead.This is often known as 60/40 solder. It is what is termed a Eutectic Mixture. Although this is a chemical term, basically this type of mixture melts at a temperature well below that which might normally be expected.older is of course used in plumbing. The type of solder used for electronics usually contains 60% tin and 40% lead. This is often known as 60/40 solder. It is what is termed a Eutectic Mixture.