But when they moved it a few inches away from the shiny spots , it would drop down .
Betty and Barney experimented with a compass , noting that when they moved it close to the spots , the needle would whirl rapidly .
When they moved it a few inches away from the shiny spots , it would drop down .
Betty and Barney experimented with a compass , noting that when they moved it close to the spots , the needle would whirl rapidly .