I asked a professor of nanotechnology what they use to…
““I asked a professor of nanotechnology what they use to measure the unthinkable small distances of nanospace? He said it was the nanometre. This didn't help me very much. A nanometre is a billionth of a metre. I understood the idea but couldn't visualise what it meant. I said, "What is it roughly?" He thought for a moment and said, "A nanometre is roughly the distance that a man's beard grows in one second". I had never thought about what beards do in a second but they must do something. It takes them all day to grow about a milllimetre. They don't leap out of your face at eight o'clock in the morning. Beards are slow, languid things and our language reflects this. We do not say "as quick as a beard" or "as fast as a bristle". We now have a way of grasping of how slow they are - about a nanometre a second.””
About This Quote
This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.
The anecdote uses a beard's growth rate to illustrate a nanometre per second, showing how relatable analogies help grasp abstract scientific scales.
In simple terms: A beard's growth per second makes a nanometre understandable.
Key Takeaway
Use everyday analogies to explain tiny measurements.
Themes
science
education
communication
perception
scale
Mood
educational
playful
Type
inspirational
didactic
When to use this quote
- classroom teaching
- science outreach
- public talks
- media explanations
Key Concepts
analogy
visualization
nanotechnology
Questions to Reflect On
- How can we find better analogies for other scales?
- What limits do analogies have in scientific education?
A Different Perspective
Analogies may oversimplify complex concepts.