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The ripple tank is supplied with three robust dippers which can be easily adjusted to suit the depth of water being used
Elite Model 2 is a battery-powered tennis ball machines that will challenge all types of strokes as it benefits from a triple oscillation feature that produces shots at random both horizontally and vertically so giving short and deep shots
available in cardioid
Any water or moisture in the soil will conduct to give an analogue voltage that can be read by the BBC micro:bit
102mm long and 38 dia
TIMER MAGNETIC TIME TRACKER JSR61-25 The ripple tank is suppliedLearning Resources Magnetic Time Tracker, 7 x 5 x 1 1 2 Inches