Hi all, this is my 1st time posting here, so please bear with me. I have this odd physics question which my teacher claimed it was correct. In fact, the entire physics department agreed with her. I may be wrong, but I need confirmation. For a resistance thermometer, the resistance DEcreases when the temperature of a object INcreases. It is thus inversely proportionate. Is this correct? For different thermometers, specifically the mercury and the resistance thermometer, when the reading of the mercury thermometer reads 40 degree Celsius, the resistance thermometer should read much higher than 40, in fact, in the 75 range. My teacher told me that this is because different thermometric properties will produce different temperature scales but they will agree at the ice and steam point. Other pupils who put the reason as the resistance of the platinum wire is not based on a linear scale got the mark. I mean, if it has a non-linear scale, how can it be used as a thermometer?