(In case youâre not familiar with it, Weight Watchers followers have a set number of points they can use for the day, and zero-point foods are a BFD.) The zero-points list used to just be fruits and vegetables, so this is a huge change.
While Thomas Crapper is commonly given credit for inventing the first flushing toilet in the late 1800s, the first version can actually be traced back to 1596. At this time, a British nobleman, Sir John Harrington, first engineered and invented a valve that could release water from the water closet (WC) when pulled.
The flush toilet makes use of some hydrodynamics so it makes this a bit tricky, but I'll try to abstract away the fluids and simply represent them as forces. The flush toilet makes use of two separate levers and no other simple machines. The first lever is applied by the operator using the handle. In this case, the fulcrum is located at a midpoint between the ends of the lever. Connected to the handle is a moment arm which is connected to a chain.