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.
The digit(s) then turn blue because of prolonged lack of oxygen. Finally, the blood vessels reopen, causing a local flushing phenomenon, which turns the digit(s) red. 1  Vibration white finger of VWF is a form of Reynaud's disease can cause the finger tips to become numb and turn white especially in the cold.