Abstract: Among other things, a rowing technology includes a first rowing machine having an electromagnetic brake providing a resistance to a rower of the machine in each rowing stroke of a series of rowing strokes of the rower An electronic controller causes the resistance of the electromagnetic brake to vary over each rowing stroke in a profile that emulates resistance to which another rower in a shell on water or on a second rowing machine is subjected in each rowing stroke of a corresponding series of rowing strokes.

Abstract: Systems, methods, and devices for inserting an intraocular lens (IOL) into an eye, may be provided. An apparatus includes a plunger and a plunger tip. The plunger tip includes a dimple positioned at a distal end of the plunger tip. The plunger tip further includes a pocket in fluid communication with the dimple.