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History This Week
A look at events
that made history this week -
compiled by the Summerland Amateur Radio Club of Lismore, NSW
Sunday 15 October 2006
1824 Portland Cement patented by
J.Aspdin, Wakefield, Yorkshire.
1879 Edison invents the incandescent electric lamp.
1884 Edison patents 2 element lamp. (Diode valve)
1915 First transAtlantic speech relay by radiotelephone
by AT&T Arlington USA, to Paris
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Visit the Summerland Amateur Radio Club's website
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Read last week's 'History
This Week'
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