Science experts needed
 

Yo, as you guys might or might not know, I moved over to Germany not too long ago to started working at a new company.
As it turns out, the job is much harder than I expected it to be: They require a lot of knowledge on physics. One of those fields is thermal physics and I have no idea how any of it works. Does someone know for example how this thing here works? We use it a lot at work and luckily I haven't had to operate it YET but I'm afraid they'll ask me to do so, soon.