which invention has had most negative impact on the world?? The invention of the first mechanical clock was not very successful. This is because of its complex system, large amount of materials used in production, and complexity in production. Due to complicated process of making it, it had low production rate. However, some inventions made by Thomas and Henry have been of great help in manufacturing this kind of clock. It has become a standard for all world. In this paper, we will try to discover the most negative impact on our world and why. Thomas and Henry invented the first mechanical clock that is still found throughout the world. They invented a machine that could count without any human intervention or assistance. MECHANICAL CLOCk Their discovery is an example of practical application as well as scientific breakthrough. This invention made significant contribution in the field of science. The invention of hand-cranks that were very simple and easy to use made their creation m