LEP collider tunnel, CERN
Special effects photograph of LEP, the Large Electron-Positron collider at CERN, the European centre for particle physics near Geneva. LEP accelerates electrons & positrons to an energy of 50 GeV. It is housed in a circular tunnel 100m underground & 27km in circumference. The particles travel in opposite directions inside a narrow aluminium pipe which passes through large electromagnets. Test instruments sit on top of the magnets in this picture taken shortly before LEP started operations in July 1989. The particles collide at 4 points around the ring, where their interactions are recorded by 4 giant particle detectors.. Photo taken April 1989.
© DAVID PARKER/SCIENCE PHOTO LIBRARY
Channel tunnel. Historical artwork of a tunnel beneath the English Channel through which Napoleon's troops are moving to invade England. The possibility of a tunnel under the Channel was first put to Napoleon in 1802. This cartoon was drawn in 1804, after the resumption of war between England and France in 1803. The French are also attacking by sea and by hot air balloon (the Channel was first crossed by hot air balloon in 1785). The English defence includes ships and men flying from kites with rifles. A semaphore system is operating from telegraph towers on the French side. From La Telegraphie Historique by Alexis Belloc (1888).
© SHEILA TERRY/SCIENCE PHOTO LIBRARY
Swindon Works Tunnel Entrance, 1935
A sea of men can be seen leaving the Works, probably at lunchtime. This was the main entrance tunnel for the Works. The doors were promptly closed after each call for work. Anyone late to work could not get in and have to explain themselves to the gatehouse staff.
© STEAM Museum of the GWR
1930s, 1935, Entrance, People, Swindon Works, Tunnel