Flashing refers to thin pieces of impervious material installed to prevent the passage of water into a structure from a joint or as part of a weather resistant barrier system. In modern buildings, flashing is intended to decrease water penetration at objects such as chimneys , vent pipes, walls, windows and door openings to make buildings more durable and to reduce indoor mold problems. Metal flashing materials include lead , aluminium , copper ,  stainless steel , zinc alloy , and other materials. The origin of the term flash and flashing are uncertain,  but may come from the Middle English verb flasshen , 'to sprinkle, splash', related to flask.
Bimetallic strip - Wikipedia
In statistics , restricted randomization occurs in the design of experiments and in particular in the context of randomized experiments and randomized controlled trials. Restricted randomization allows intuitively poor allocations of treatments to experimental units to be avoided, while retaining the theoretical benefits of randomization. The concept was introduced by Frank Yates [ full citation needed ] and William J. Youden [ full citation needed ] "as a way of avoiding bad spatial patterns of treatments in designed experiments. Consider a batch process that uses 7 monitor wafers in each run.
A bimetallic strip is used to convert a temperature change into mechanical displacement. The strip consists of two strips of different metals which expand at different rates as they are heated, usually steel and copper , or in some cases steel and brass. The strips are joined together throughout their length by riveting , brazing or welding. The different expansions force the flat strip to bend one way if heated, and in the opposite direction if cooled below its initial temperature.
Came glasswork is the process of joining cut pieces of art glass through the use of came strips or foil into picturesque designs in a framework of soldered metal. Final products include a wide range of glasswork, including stained glass and lead light pieces. Came is made of different metals, such as lead , zinc , brass and copper. The metal came selected generally depends upon the size, complexity and weight of the project. As an alternative to came, copper foil may be used, for small, intricate pieces.