Crossbow
device · 500 BC · Ancient world
A bow on a stock with a trigger mechanism.
What it is made of
- Trigger — has part. A trigger.
Principles and materials it uses
- Elasticity — uses. The energy of an elastic bow.
- Wood — is made of. The stock and bow of a crossbow are wooden.
- Bronze — is made of. The trigger of Chinese crossbows was bronze.
History: what it evolved from and what it influenced
- Bow and arrow — evolved from. A bow on a stock.