Rather, they have most likely caused a joint, bone, ligament or tendon injury due to overstraining, pinched nerve, or similar causes. While heart attack warning is usually connected with the pain in a woman's left arm, the right one, if hurting, is probably injured. The cause may be a simple night of sleeping while holding your right arm in an unnatural position.
As brass hardware ages, its surface oxidizes, which leaves a layer of tarnish over the hardware. Over time, an additional protective layer, called a patina, forms over the untreated tarnished brass.
Tarnish is a surface phenomenon that is self-limiting, unlike rust. Only the top few layers of the metal react, and the layer of tarnish seals and protects the underlying layers from reacting. Tarnish actually preserves the underlying metal in outdoor use, and in this form is called patina. The formation of patina is necessary in applications such as copper roofing, and outdoor copper, bronze, and brass statues and fittings. Patina is the name given to tarnish on copper based metals.