Sensors Definition and 153 Threads

Hi please help I have to do a piece of coursework on sensors. I am testing a thermistor and my teacher mentioned something about calibration but I don't know what it is can someone help please. I have taken results for the resistances for every ten degrees from 0 to 150

Hi My neighbour has microwave sensors, and the microwave beam comes through the walls of my house. this sort of thing i think- http://www.chubb.co.uk/pdfs/IPS_PDF/IPS212.pdf I want to know how I can stop the microwaves. I thought wallpapering the walls with aluminium foil. If the...

I'm sure you all have seen them, I just wonder if anyone knows what they do: I have noticed traffic sensors of some sort in various places over the last few months. They consist of two long wires which look like co-ax cable duct-taped across the road/street/lane/highway. They are connected to...