AA battery vs Rice grain: size comparison
AA battery: 5.05 cm. Rice grain: 7 mm. Both silhouettes are drawn at the same scale.
Size ratio: ×7.2
AA battery
5.05 cm
What is measured Height of an AA battery (LR6)
The AA format has been standardised since 1947.
Source : Wikipedia — AA battery
Rice grain
7 mm
What is measured Length of a long-grain rice grain
Rice feeds more than half of humanity.
Source : Wikipedia — Rice