The Battery That's Lasted 176 Years

GUEST VIDEO! Go subscribe to Sally's channel:    / sallylepage   In a laboratory at Oxford University sits the Oxford Electric Bell, which has spent 176 years constantly ringing. And no-one's quite sure what the battery that powers it is made of... Add Sally on all the social networks: Twitter:   / sallylepage   Facebook:   / shedscience   Instagram:   / sallylepage   Website: http://sallylepage.co.uk Snapchat: sally.lepage Thanks to camera operator Mikayla Hunter:    / @oldschool8260   And thanks to the University of Oxford's Physics Department for letting us film the bell! References: Croft (1984) The Oxford electric bell, Eur. J. Phys. http://iopscience.iop.org/article/10.... Croft (1985) The Oxford dry pile, Clarendon Laboratory Historical Notes No. 3 The Clarendon Dry Pile, Department of Physics website http://www.physics.ox.ac.uk/history.a...