This invention relates to the design of a process by intermittent dielectric heating combined with a recycling system. The apparatus comprises an ice resurfacing machine having a water storage tank connected by delivery pipe to a flood bar assembly to apply water from the water storage to a flood cloth. This coding may or mayn’t include error control, for example, as disclosed herein. In a further embodiment, the whistle is modifiable and modification of the whistle is configurable to eliminate or change the whistle sound. A determination is made that the switch is in the first state if the switch voltage is higher than the stored voltage at the second time. In the present invention, a plurality of heat sources are combined to supply heat to, or remove heat from specific regions of the sample such that a specific spatial temperature distribution is maintained inside the sample by locating a relatively high temperature region lower in height than a relatively low temperature region.