Rooting around in the fascinating stuff at the bottom of a draw labelled 'Engineering - Junk Miscellaneous'. Delving amongst the delightful...
An Engineer in Wonderland – Thinner than a human hair
Blah blah blah is 1,000 times thinner than a human hair.
My human hair visualisation is already wobbling at half as thick as a human hair.
And why emphasise human?
And what colour human hair? – as fine blond human hair is about one tenth the thickness of course black human hair.
So, after a bit of thinking, I propose a new metric:
How many of [interesting things] would fit on the edge a razor blade.
Roughly, a human hair is 100µm in diameter, and a nice new razor blade edge is 0.4µm across, which I am approximating to 0.5µm when it has been used a bit.
Although you cannot visualise the edge of a razor (well, a few experts can) we all know that it is pretty thin.
So, a razor blade edge is 200 times thinner than a human hair – gaining two orders of magnitude.
Five state-of-the-art transistor gates would fit on the edge of a razor blade – which is amazing in itself – and easier to think of than 1,000 times thinner than a human hair.
I rest my case
Should you feel the need, respond to email@example.com with ‘razor’ in the title.
Please don’t respond below as our spam blocking system is rubbish and the inbox is overwhelmed by all kinds of generous offers from rather annoying people.Tags: Alice, blade, Engineer in Wonderland, hair, human, razor