Sponge
material · 1000 BC · Ancient world
A porous material (synthetic ones since the 1930s).
Principles and materials it uses
- Capillary action — uses. It absorbs by capillary action.
- Cellulose — is made of. Cellulose sponges.
material · 1000 BC · Ancient world
A porous material (synthetic ones since the 1930s).