00:00:00 PM
Abstract:
We present the development and uncertainty evaluation of a transportable ytterbium optical lattice clock, achieving a total systematic uncertainty level of 3.7 ×10-18. We also report a field test of the clock after transporting it to Washington DC, demonstrating the clock’s reliability and readiness to contribute to scientific efforts such as the redefinition of the SI second and frequency-based measurements of Earth’s geopotential.
Abstract: Physics education research in undergraduate laboratory courses is vital to ensure that these courses achieve their learning goals, such as developing hands-on technical skills and mastering concepts and practices related to measurement uncertainty. In this talk, I cover my role in developing a research-based assessment instrument, the Survey of Physics Reasoning on Uncertainty Concepts in Experiments (SPRUCE). I will highlight student proficiencies and challenges with measurement uncertainty along 10 different axes, such as propagating errors, estimating the size of uncertainty by considering instrument precision, and determining if two measurements agree with one another.