Rice grain vs Table tennis ball: size comparison
Rice grain: 7 mm. Table tennis ball: 4 cm. Both silhouettes are drawn at the same scale.
Size ratio: ×5.7
Rice grain
7 mm
What is measured Length of a long-grain rice grain
Rice feeds more than half of humanity.
Source : Wikipedia — Rice
Table tennis ball
4 cm
What is measured Diameter of a table tennis ball
It grew from 38 to 40 mm in 2000 to slow the game down.
Source : Wikipedia — Table tennis