Btw, anyone knows this one?

There's a name down there: Thermal Effusivity, by Saika Kunieda, don't know if it is a real manga though :v

Thanks, makes me wonder if I'm blind.

Thermal Effusivity is the name of this manga, it literally tells us what it means on one of the first pages
http://www.mangago.zone/read-manga/netsushintouritsu/mi/015d4ba9bcd079d3f8d365905da097bf_chapter-1/8/