Tagged: Maths

Contrails Fun #2–Angles and Distances

After last years first episode with contrails, another one popped up today.  During a late afternoon walk, on a sunny Winter’s day, I saw a great contrail right over the Melbourne area:   [click...

How many credit cards per person?

Another quick and fun example of everyday deceptively LARGE numbers action. I recently used my first ‘virtual’ or temporary credit card, for a USA purchase. This site generated a single-use card, pre-loaded with $n...

Why no Melways of the Bush?

I remember years ago wondering why there wasn’t a Melways (street directory) of the entire State of Victoria, including the bush areas. And here’s one reason…. This is going to be just a rough...

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