Limited wavelengths: the Casimir effect arises because virtual photons at certain wavelengths cannot emerge in a gap between two plates (Courtesy: iStock/4X-image) Physicists in the US have worked out ...

Occupational and Environmental Medicine, Vol. 63, No. 2 (Feb., 2006), pp. 84-91 (8 pages) Objectives: To investigate the effects of contact force at the finger on acute changes in finger circulation ...

1. Reactions toward small novel objects were studied in two highly cautious isolation-reared chimpanzees. 2. In Experiment 1 the subjects were presented with 75 different objects. Grasping increased ...