In the one that I'm familiar with, they put the battery and all electronics in the part of the probe that sticks inside the meat so that the temperature of that part never exceeds ~212F. The part that sticks out and gets really hot is probably just an antenna.
A clever design to be sure, but still a long way from electronics that can survive anything near your typical oven temperature, much less the surface of Venus.
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In the one that I'm familiar with, they put the battery and all electronics in the part of the probe that sticks inside the meat so that the temperature of that part never exceeds ~212F. The part that sticks out and gets really hot is probably just an antenna.
A clever design to be sure, but still a long way from electronics that can survive anything near your typical oven temperature, much less the surface of Venus.