Bow and arrow

device · 70000 BC · Stone Age

A projectile weapon: an elastic bow stores the energy of the draw.

What it is made of

Rope — has part. The bowstring is a cord of sinew or fibre.

Principles and materials it uses

Elasticity — uses. A bow stores the energy of elastic deformation and releases it into the arrow.
Wood — is made of. Bows and arrow shafts were made of flexible wood.
Sinew — is made of. Bowstrings were twisted from sinew, which was also used to bind the points.
Flint — is made of. Arrowheads were knapped from flint.

History: what it evolved from and what it influenced

Crossbow — evolved into. A bow on a stock.
Darts — evolved into. Accuracy of shooting.

Take Bow and arrow apart