How a Small Hole at the Top of a Pen Cap Prevents Choking
Why Does a Pen Cap Need a Small Hole? A pen is something people use almost every day. It may sit on a desk, stay inside a school bag, or be carried around during...
Tagged: Product Design
Why a Straw Bends at the Neck Instead of Staying Straight
A straw looks like a simple tube, yet the way it behaves during use is not uniform along its length. The bending almost always happens near the upper section, and that is rarely questioned...