Science and engineering in Manchester chemist visited Manchester in the 1840s. In his research in Manchester, Smith discovered the existence of acid rain, a by product of the industrial revolution. Smith consequently pushed for greater environmental awareness and helped to found the Noxious Vapours Abatement Society in Manchester, which raised awareness of the consequences of poor air. Joseph Whitworth was an engineer and inventor who hailed from Stockport, Cheshire (now Greater Manchester). A talented mechanic amongst various other engineering roles, for long periods of his life, he worked in factories in Manchester. Whitworth would ultimately devise a standard screw thread system, the first of its
Tool-assisted speedrun but slower one, in order to avoid risks such as dying and having to start over, failing a trick and wasting more time, or failing a setup for a difficult trick. Depending on the game, the time differences between possible routes, along with other advantages from frame-by-frame precision, tool-assisted speedruns surpass their unassisted counterparts by a few seconds to entire hours. For example, the fastest "Super Mario Bros." TAS currently stands at 04:54.032 (4'49" using Speed Demos Archive timing, 4:51 using standard unassisted timing), while the fastest unassisted run stands at 4'58" (4:56.245 using standard unassisted timing, from somewes). Tool-assisted