The present study contributes to the understanding of physics students’ representational competence by examining specific bodily practices (e.g. gestures, enactment) of students’ interaction and constructions
Improved slip characteristic refers to lower friction upon exposure of tubing treated in accordance with the invention to an aqueous environment when compared to untreated tubing. The treatment has been demonstrated to uniformly improve, increase the lubricity of, the surface of the tubing. It is bel...
1. A device comprising: a support component movably attached to a rear portion of the device; and at least one hinge that moveably attaches a portion of the support component to the device, the hinge including: a hinge frame; a pivot member pivotably engaged with the hinge frame, the pi...
2. The friction stir welding machine of claim 1 wherein the counterbalancing force is substantially equal to the friction stir welding force, so that a sum of friction stir welding forces in the first direction on the second member is approximately zero. 3. The friction stir welding machine...