Lucy shows me how tall she is in nanometers
Lucy is 10 years old and growing fast. Today we measured her height in NanoGirls units of nanometers.
Lucy is an incredible 1400000000 nanometers. That's the same as 14 SpongeBob SquarePants standing on top of each other!
Scientists usually measure the height or length of small things like atoms in nanometers, larger things like bacteria in microns, bigger things like bugs in centimeters, bigger things like people in meters and bigger things like the distance from one city to the next in kilometers.