There is a rather impressive new office building going up in the City of London at the moment. Colloquially referred to as the Walkie Talkie building (London likes its building nicknames), instead of the usual flat walls, its walls are gently curved, giving it a very sculptural quality. And like many modern office blocks, it is covered with floor to ceiling glass. It will look amazing when it is completed.
However, people living, working, or even just passing nearby are feeling amazed for all the wrong reasons. It seems that the architects didn't join things up - they forgot to take account of – or underestimated – the effects of the laws of optics.
Think of a reflecting telescope. It works because the concave mirror in the telescope focuses the light from the stars that falls on it. What have the architects put on the front of the Walkie Talkie building? In effect, a gigantic concave mirror. And like all such mirrors it focuses the light – in this case particularly the sunlight - falling on it. On a hot summers’ day, the temperature in a nearby street has risen enough to blister paint and melt plastic. Now it’s called the Walkie Scorchie.