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Battery not included
The metal detector has a second coil of wire in its head (known as the receiver coil) that's connected to a circuit containing a loudspeaker
and double stars with sharp contrast
Unleash your curiosity with the Explore FirstLight 127mm Doublet Refractor Telescope
Innovative Detector Challenge Mircoscope Battery not includedFeatures Learn how metal detectors work Build a handheld metal detector with adjustable sensitivity Discover how security checkpoints function by assembling a mini version Explore the effects of parabolic motion on metal detection with an aim and shoot game Test your hand eye coordination by creating fun maze challenges Description Explore the relationship between electricity and magnetism with this metal detector challenge set from Explore Science.
