I’m 177 cm tall, about 50 cm across, and about 15 cm deep. That gives me an area of very roughly 25,000 square centimeters. That’s an estimate, but good enough — it won’t matter if I’m off by a factor ...

A fundamental requirement stipulated by DARPA is the ability to handle chips generating a kilowatt of heat per square centimeter, more than 10 times greater than in conventional high-performance ...

One older study calculated hair density in 50 participants. They found that on average there were between 800 to 1,290 hairs per square inch (124 to 200 hairs per square centimeter).

“I am speechless,” Lalit Patidar, 18, told the organization after winning the award in February for having 201.72 hairs per square centimeter on his face.