delete MoveHandlesKeyboardHelpSection, phetsims/gas-properties#215

js/common/view/PickupCoilAreaNode.ts

@@ -51,23 +51,16 @@ export default class PickupCoilAreaNode extends Node {
             // Position of samplePoint in global coordinates (without allocating anything).
             const samplePointPosition = this.reusablePosition.set( pickupCoilPosition ).add( samplePoint );
 
-            let chordLength;
+            const R = pickupCoil.coil.loopRadiusProperty.value;
+            const d = samplePoint.y; // distance from center of the circle to the chord
+            let chordLength = 2 * Math.sqrt( Math.abs( R * R - d * d ) );
+
             if ( pickupCoil.magnet.isInside( samplePointPosition ) ) {
 
               // The sample point is inside the magnet. Use the magnet's thickness (depth) so that we do not
               // exaggerate the EMF contribution by using the entire cross-section of the coil. The field outside
               // the magnet is relatively weak, so ignore its contribution.
-              chordLength = pickupCoil.magnet.size.depth;
-            }
-            else {
-
-              // The sample point is outside the magnet. Use the algorithm for distance from center of circle to a
-              // chord to compute the length of the chord that is perpendicular to the vertical line that goes through
-              // the sample points. If you're unfamiliar with this algorithm, then see for example
-              // https://youtu.be/81jh931BkL0?si=2JR-xWRUwjeuagmf.
-              const R = pickupCoil.coil.loopRadiusProperty.value;
-              const d = samplePoint.y; // distance from center of the circle to the chord
-              chordLength = 2 * Math.sqrt( Math.abs( R * R - d * d ) );
+              chordLength = Math.min( pickupCoil.magnet.size.depth, chordLength );
             }
 
             shape.moveTo( -chordLength / 2, samplePoint.y );