The float glass process was developed in the mid-20th century by Sir Alastair Pilkington, revolutionizing the glass industry. Prior to this method, glass was produced using labor-intensive techniques that often resulted in irregular thickness and surface imperfections. The float process employs a simple yet ingenious technique where molten glass is floated on top of molten tin, creating a perfectly flat surface as the two materials interact. This unique combination allows for the production of glass sheets with unparalleled uniformity and clarity.