Microthermometer

The methodological bases  for  the study of  the systematic error of  temperature measurement by  liquid-in-tube thermometers  and microthermometers with  diminution  of  the  capillary  diameter,  that  is, when  passing  from  thermometers  to microthermometers, in the  field of predominance of gravitational forces over surface tension  forces, are given.

Micro-  and nanothermometers with  liquid-phase  sensitive  elements  are made on  the basis of  capillaries  filled with liquid. Important is the kind of liquid (water, alcohol, mercury, etc.), the angle of inclination of the thermometer capillary, and its internal diameter. Currently the need for micro- and nanothermometers with low inertia and accordingly with the small diameter of  the  capillary  is  increasing,  and  information  about  their  inertia,  which  is  necessary,  in  particular,  for  medicine,  becomes insufficient.