How do probe thermometers accurately read the temp. at the probe and not the temp of the wire?

Question

So I was watching [a cooking youtube video](https://www.youtube.com/watch?v=zF45hah9Ljo&t=478s), and I saw that he was using a probe thermometer on beef that he was cooking in the oven. The probe obviously goes in the meat, and the wire tracks out the oven (while closed) and the temperature display obviously sits outside the over. However, I was looking and it appears like the wire is exposed and not insulated. This would mean the wire heats up to the temp of the oven, how does the display not show this temperature but rather the temp of the probe?

Thanks to anyone who can explain it to me!

In: Physics

Answer 1

The wires are insulated. You have three thin wires with high-temperature insulation going to a temperature sensor, and these three wires have a layer of braided stainless steel sleeving around both of them. So you’re not seeing the actual uninsulated wire, just the outside sleeve that happens to be metallic for better heat resistance.