Measuring temperature is easy – and millions of temperature measurements are made every day. These measurements help people make sense of the world and help them make things in a reproducible way. And yet there is a fundamental problem with temperature measurement:
How do we relate the readings of thermometers in degrees Celsius or kelvin, to the fundamental concept of temperature in terms of the energy of molecular motion?
Together with my colleagues at NPL, I have recently carried out the most accurate measurements of temperature ever. The purpose of the measurements is to help with a future redefinition of the kelvin directly in terms of energy. In this talk I will bring along the ugly brother of the world’s most accurate thermometer, and tell you how we did it.
18:30 Refreshments, 19:00 lectures start