In 1696 - 1701, Sir Isaac Newton was employed in the famous company 'Royal Mint' in England that produces coins. During that period, it is said that in England there was a big problem with the presence of fake currency and thus making the economy of the country stagnate. Newton was hired to solve the problem. What he did was to introduce a system of placing ridges on the edges of coins, but it is explained that in the past coins were being ridged but not with the system that Newton decided to use. The benefits of those terraces; - It is easy to detect fake coins because it is said that it is difficult to look the same as real coins. Even if you are in the same place, there must be a difference in weight and appearance! - The ridges also help the coin to be harder to roll easily and thus make it last longer in circulation. - These ridges help visually impaired people to be able to easily detect different types of coins.