BTW: I also learnt a valuable lesson during my temperature experiment (when comparing a solid plate stove cooking time too an induction hob), that the induction skrews up the lm35's readings! 
luckily I realised quickly that the stove was literally busy cooking the metal in the sensor too through the induction process and I immediately removed it, eventhough the sensor was not near the bottom of the metal pot! I checked and the sensor was still fine afterwards.
At least I could continue measuring the temp during the cool down process when the induction was off.
It was a fun and informative experiment none the less. Thanks for all the help that made it possible!