An uncommon case of relevance through everyday experiences

Physics education research has probed for the relevance of physics in students' everyday lives. Attitudinal and epistemological surveys have asked students if they think of or use physics in their daily lives. We have previously documented how it is uncommon that our life science students describe using or even seeing physics in their daily life (Nair, 2018). This result was unsurprising and aligns with previous scholarship of students majoring in disciplines outside of physics; we have argued that it is optimistic for scholars to expect students with disciplinary homes outside of physics to see their experiences through a lens of physics. Methodologically, we searched for a contrasting case (Sam). Sam is majoring in the life sciences and articulates moments where she uses physics to reason through everyday phenomena. We explore the ways in which courses can support students like Sam to find physics relevant to their everyday experiences.Comment: pre-prin

Response to the consultation ‘Regulating On-line Gambling in the EU: Recent Developments and Current Challenges from the Internal Market Standpoint'

This is a collaborative submission from a group of academics based in the UK with expertise in information technology law and related areas. The preparation of this response has been funded by the Information Technology Think Tank, which is supported by the Arts and Humanities Research Council and led by the SCRIPT/AHRC Centre for Research in Intellectual Property and Technology, University of Edinburgh. This response has been prepared by Abhilash Nair and Dinusha Mendis

Detecting primordial gravitational waves with circular polarization of the redshifted 21 cm line: II. Forecasts

In the first paper of this series, we showed that the CMB quadrupole at high redshifts results in a small circular polarization of the emitted 21 cm radiation. In this paper we forecast the sensitivity of future radio experiments to measure the CMB quadrupole during the era of first cosmic light ($z\sim 20$). The tomographic measurement of 21 cm circular polarization allows us to construct a 3D remote quadrupole field. Measuring the $B$-mode component of this remote quadrupole field can be used to put bounds on the tensor-to-scalar ratio $r$. We make Fisher forecasts for a future Fast Fourier Transform Telescope (FFTT), consisting of an array of dipole antennas in a compact grid configuration, as a function of array size and observation time. We find that a FFTT with a side length of 100 km can achieve $\sigma(r)\sim 4\times 10^{-3}$ after ten years of observation and with a sky coverage $f_{\mathrm{sky}}\sim 0.7$. The forecasts are dependent on the evolution of the Lyman-$\alpha$ flux in the pre-reionization era, that remains observationally unconstrained. Finally, we calculate the typical order of magnitudes for circular polarization foregrounds and comment on their mitigation strategies. We conclude that detection of primordial gravitational waves with 21 cm observations is in principle possible, so long as the primordial magnetic field amplitude is small, but would require a very futuristic experiment with corresponding advances in calibration and foreground suppression techniques.Comment: 19 pages, matches PRD accepted versio