Sunday, October 20, 2013

Just this. . .






My friend Katherine emailed this photograph of light striking one of my paintings 10 713.4km away, on the other side of the world. . . 

If the speed of light = 299 792 458 miles - or 482 469 194 kilometres - per second,  how long would it take light to travel the distance between Cape Town and Dunedin? (It's late. I will have to wait till morning before attempting this sum - unless there's someone out there willing to give it a go?).    



_/\_ 



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