SeaSpark

I have witnessed strange things happening in my non-stick teflon coated pan: When i put a cold substance (hamburger for example) in my 35cm teflon pan filled with a thin layer of olive oil (did not try other oils results may be same) the oil retracts from the cold substance in about a 20cm wide circle. Leaving the bottom of the pan completely free of oil. The pan is perfectly flat and horizontal, the oil forms a nice evenly spread layer before i put something cold in. How is this possible? Sorry if anyone finds my english a bit strange, i'm from Holland.