In the documentary that we were shown today it talked and explained a lot about weights and its history.It showed us many different shapes and sizes of weights from around the world.They also did an experiment in public to show people that size doesn’t matter.The example which they showed us with was two weights a big one and a small one.They gave it to the public and told them to see which one would seem heavier.The public were shocked to see that the big one and the small one were just about the same size,they were just roughly around 100 grams different to each other.Another example we were shown was an experiment to do with gravity.There was a weight in a special box which shows specifically how much the weight weighs.This experiment was done on ground level.The other part to this experiment was that they would put the same weight with the same box just on another place.They put this other experiment on the top of a block of high flats,which showed there was less gravity so therefore the weight was lighter.It was roughly 100 grams lighter than the weight on ground level.This was explained to us by the talk of gravity and how objects turn lighter as they are higher than ground level.This was what the documentary was showing us about.