Amazing piece of metal (speculum)
3,197
by Super User, 8 years ago
This small disc of metal - made from speculum - is an important part of history.
The metal is an alloy of tin and copper with some arsenic thrown in.
Discussed by Professor Martyn Poliakoff at the Royal Society, in London.
It is the primary mirror from Sir Isaac Newton's original reflecting telescope.
Brady inside big telescopes: http://bit.ly/telescopetours
More chemistry at http://www.periodicvideos.com/
Follow us on Facebook at http://www.facebook.com/periodicvideos
And on Twitter at http://twitter.com/periodicvideos
From the School of Chemistry at The University of Nottingham: http://bit.ly/NottChem
Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/
A run-down of Brady's channels: http://bit.ly/bradychannels
The metal is an alloy of tin and copper with some arsenic thrown in.
Discussed by Professor Martyn Poliakoff at the Royal Society, in London.
It is the primary mirror from Sir Isaac Newton's original reflecting telescope.
Brady inside big telescopes: http://bit.ly/telescopetours
More chemistry at http://www.periodicvideos.com/
Follow us on Facebook at http://www.facebook.com/periodicvideos
And on Twitter at http://twitter.com/periodicvideos
From the School of Chemistry at The University of Nottingham: http://bit.ly/NottChem
Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/
A run-down of Brady's channels: http://bit.ly/bradychannels
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8 years ago
