What is bladder?

Submitted by: Muhammad
From the mid I7th century artists' pigments when mixed with oil were stored in small bladders. To use them the painter made a small hole with a tack, squeezed out some colour then pushed the tack back into the hole. Towards the evolution of the tube, the bladder was followed by a form of syringe. In 1840 the collapsible tube came into being.
Submitted by: Muhammad

Read Online Painting Teacher Job Interview Questions And Answers