The PAR can is the lamp housing that safely holds the lamp and any color media (gel) in place. The can also has a mounting bracket that allows it to be bolted to a light bar or truss or by use of a pipe clamp...well, clamped to a pipe.
Raynaud's Disease, Numb, Cold Fingers or Toes, Symptoms and Treatment. Definition. Episodic vasospasm (constriction of small arteries) of the fingers or toes. It is characterized by digital (fingers or toes) blanching or white color, cyanosis (blue), a feeling of numbness or dulled sensory response and rubor (red) after cold exposure and rewarming. It can also be induced by anxiety or stress.
Feet turn black in peripheral gangrenous changes, in diseases of arteries which lack to supply blood distally, due to insufficiency.e.g.DIABETIC FOOT . Feet turn blue in Peripheral cyanosis, in cardiovascular diseases , especially in children,in arterial insufficiency to regulate oxygenated blood to the distal extrimities. E.g. TETRAD OF FALLOT.