Search results
Results From The WOW.Com Content Network
The condition can cause localized pain, discoloration (paleness), and sensations of cold and/or numbness. When exposed to cold temperatures, the blood supply to the fingers or toes, and in some cases the nose or earlobes, is markedly reduced; the skin turns pale or white (called pallor) and becomes cold and numb.
The sublimated material collects (5) on the cold finger proper, cooled by a coolant (blue) circulated through ports 1 and 2. A cold finger is a piece of laboratory equipment that is used to generate a localized cold surface. It is named for its resemblance to a finger and is a type of cold trap. The device usually consists of a chamber that a ...
“This condition commonly occurs in individuals between 15 to 30 years, in which the fingers, toes, ears, nose or even nipples become cold when an individual is stressed or exposed to cold air or ...
Cold fingers are also used to condense vapors produced by sublimation in which case the result is a solid that adheres to the finger and must be scraped off, or as a cold-trap, where the liquid or solid condensate is not intended to return to the source of the vapor (often used to protect vacuum pumps and/or prevent venting of harmful gasses).
Any type of cold can be a trigger, including reaching into the freezer, holding a chilled drink or relaxing in an air conditioned room. Rare disorder can turn fingers and toes white or blue when ...
A medical emergency would ensue if the extremities experience prolonged periods of exposure to the cold, particularly in children and patients with poor general health. [3] However, frostbite differs from acrocyanosis because pain (via thermal nociceptors ) often accompanies the former condition, while the latter is very rarely associated with ...
They shared the No. 1 cold-related symptom to flag ASAP, plus a few more to note. Related: This Life-Threatening Issue Is Often Confused With Anxiety—Here's How to Spot It Why Colds Make Asthma ...
Note the white purified camphor on the cold finger, and the dark-brown crude product. Dark green crystals of nickelocene , freshly sublimed on the cold finger of the sublimation apparatus. A typical sublimation apparatus separates a mix of appropriate solid materials in a vessel in which it applies heat under a controllable atmosphere (air ...