Ive started a project using nichrome wire and found it has some strange properties. I purchased several different gauges but I will use one as an example. The wire is called "nikrothal 60" and its 38awg..its supposed to measure 43.29 ohms per foot which is about 3.6 ohms per inch. I made a coil for a heating element out of a one inch piece of this wire and when the coil is stretched or contracted the readings are anywhere from 5 to 20 ohms. Why are the readings affected by the shape?