Bowling ball vs Light bulb: size comparison
Bowling ball: 21.9 cm. Light bulb: 11 cm. Both silhouettes are drawn at the same scale.
Size ratio: ×2
Bowling ball
21.9 cm
What is measured Diameter of a regulation bowling ball
All balls share the same diameter: only the weight changes.
Source : Wikipedia — Bowling ball
Light bulb
11 cm
What is measured Height of an A60-shaped light bulb
The "60" in A60 is its diameter: 60 mm.
Source : Wikipedia — Incandescent light bulb