US$ 634.23
field lines
Two-speed ticker timer kit printing 25 or 40 dots per second on paper tape via carbon discs
interference - within reach of an introductory wave-mechanics curriculum
Bare 20 SWG copper wire on a 250g reel approximating 140 feet
Wooden Storage Box for 2" Bar Magnets Subcategory_Spring Scales field linesWooden storage box 3. 25 x 2 x 1 inches with a sliding top, sized to protect a pair of 50mm (2 inch) bar magnets between lessons and isolate them from steel benchtops.
US$ 634.23
US$ 486.96
US$ 406.43
US$ 776.55
US$ 197.77
US$ 156.23
US$ 91.21
US$ 343.65
US$ 324.97
US$ 92.57
US$ 738.02