US$ 26.75
Flexible joint allows the model to move through knee flexion and extension
tracing hot-air flow between the twin flues
75 by 3 inch wooden block for physics coursework
Moving-coil 4-ohm driver in a frame that orients vertically or horizontally
Gravesande Ring and Ball Apparatus Type_Apron Flexible joint allows the modelCaptive 19mm brass ball on a rod mounted Gravesande ring, passing freely through the ring at room temperature but halted by the ring after flame heating expands the metal.
US$ 26.75
US$ 21.14
US$ 163.58
US$ 13.03
US$ 58.40
US$ 51.10
US$ 60.35
US$ 97.38
US$ 148.63
US$ 176.78