I used centrifuge model to model flow of water through unsaturated Chalk, the results is going to be compared with field data. in both field and lab data, tensiometeres were used to measure response time along the unsaturated Chalk. according to the published papers, the discharge time is 1/N^2 . I used 300g in all my experiments. how the time is measured in the model (lab.) compared to the field (1g) ?