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
Trolleybuses in Manchester Trolleybuses in Manchester The Manchester trolleybus system once served the city of Manchester in England. Opened on , it gradually replaced the Manchester tramway network. By the standards of the various now defunct trolleybus systems in the United Kingdom, the Manchester system was a large one, with a total of 9 routes, and a maximum fleet of 189 trolleybuses. It was closed on . Manchester was also served by another system, the Ashton-under-Lyne trolleybus system, between 1925 and 1966. Two of the former Manchester system trolleybuses are now preserved. One of them is at the Greater Manchester Transport Museum in