The question of how many angels can dance on the head of a pin is unlikely to be discussed much this St Patrick’s Say, but a pin being presented in Washington DC today will feature the world’s smallest image of a shamrock etched on it. The pin is an ordinary Trinity College silver lapel pin, […]
![Nano-Shamrock is etched on a Trinity College Pin [Video] nanoshamrock](https://technology.ie/wp-content/uploads/2014/03/nanoshamrock-140x140.jpg)