| http://www.w3.org/ns/prov#value | - We have discovered that when it is desired to make use of a laminar heater which comprises a heating element sandwiched between two laminar electrodes and which has an irregular shape, especially one having a cut-out portion (or window) or a deeply re-entrant portion, serious problems can arise, for example a failure to generate sufficient heat in some areas and/or generation of excessive heat i
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