Pollen grain vs 70 µm hair
True scale
01
Pollen grain30 µmCharacteristic size
02
70 µm hair70 µmDiameter
Inset ×13.8Pollen grain is too small to see clearly at this scale. The ring marks its position; only the inset is enlarged.
The diameter of 70 µm hair is about 2.33 times the characteristic size of Pollen grain.