title: Advances in thermometry.
abstract: The last 25 years have seen tremendous progress in thermometry in the moderate temperature range (1 K to 1235 K). Various primary thermometers - based on different physics -have uncovered errors in the International Temperature Scale of 1990 and set the stage for the planned redefinition of the kelvin.
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
authors.forename: Michael R
authors.initials: MR
authors.lastname: Moldover
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
authors.forename: Weston L
authors.initials: WL
authors.lastname: Tew
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
authors.forename: Howard W
authors.initials: HW
authors.lastname: Yoon