A smoke alarm is a white plastic disc with a button and a battery, and the assumption is that something inside it can somehow see smoke. Neither of the two…
Each building did one job, and the shape is the job. Here are fifteen.
1. A Very Tall Pair of Doors Means Loaded Carts
Enormous doors in the middle of…
There is a difference between knowing something exists and knowing what shape it is, and the ocean floor was in the first category for a very long time.
That it…
The governing fact is adhesion. Steel on steel produces very little grip, which is efficient on the level and useless on a slope - so the route must be flattened…
The height is the mechanism, not the storage. Here are sixteen.
1. The Height Is the Pressure
Water pressure at a tap comes from the vertical distance down from the…
The cheapest components on the building, protecting the most expensive ones. Here are eleven.
1. They Stop the Roof Edge Being Fed Into the Wall
A roof with no gutter…