If it wasn't for the Persian alchemist Jabir Ibn Hayyan, we wouldn't have been released to the single most significant flavoring and preserving agent - Citric Acid, also referred to as the E330 to the scientific fraternity. Though technically a weak acid, the citric acid has quite a powerful presence in food, chemicals and dyes along with pharmaceuticals and make-up business worldwide.
Geometry comes into play in irons, this is calculated and examined utilizing the lie angle reading. Players have to make sure these angles are correct to ensure a great golf shot. The lay position of irons affects how consistent shots may be directionally but has a minimal effect on hardwoods as there was less loft. Golfers are all different measurements thus not all clubs may work correctly right off the shelf.
Geometry is needed in irons, this is calculated and checked using the rest angle reading. Golfers need to make sure these sides are correct to ensure a good golf shot. The lay position of irons affects how consistent shots will be directionally but has a minor impact on woods as there was less loft. Players are all different dimensions therefore not all clubs may function right right off the rack.