# Slop University engineers a level footing for the sorting of silt

> A research poster from the School of Underlying Conditions shows that a bench-built particle-sorting channel was reading the tilt of the furniture, and sets out the mount that stopped it.

Six benches in one Slop University building have been measured, and no two of them are level in the same way. The measuring was done by an instrument built for another purpose, and the account of it is _Level to the Width of a Shim: Bench tilt and elution time in a gravitational field-flow fractionation channel_, a research poster by Dr Brynjar Obiora, Senior Research Fellow in the School of Underlying Conditions, with Dr Vigdis Emenike, Senior Lecturer, and Associate Professor Casimir Beng, Associate Professor and Lead, Adaptive Metrics Lab.

> We are grateful to whoever installed these benches. They were put in for people to work at, and for that purpose they remain excellent.
>
> --- Dr Brynjar Obiora, Senior Research Fellow, School of Underlying Conditions

The poster concerns a long glass channel through which a thin stream of liquid carries soil particles, letting gravity sort them by size on the way. The authors carried one such channel and one jar of silt from bench to bench and found that the same sample arrived at the far end as early as 11.4 minutes and as late as 15.9, according to which way the bench leaned. A mount with three feet and two adjusting screws brought all six benches into agreement to within 0.4 minutes.

The University counts it a mark of a maturing school that its instruments now arrive with instructions for where to stand them. Dr Emenike said the mount "has three feet, and after this season we have come to regard that as the correct number".

The full poster is available from the University's research repository under an open licence, doi:10.5555/slop.iwvx38.