Plywood is a material manufactured from thin layers or “plies” of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. It is an engineered wood from the family of manufactured boards which include medium-density fibreboard (MDF), oriented strand board (OSB) and particle board (chipboard).
invented by Richard Salter
A scale or balance is a device to measure weight or mass. These are also known…
invented by Edward Jenner
The smallpox vaccine was the first vaccine to be developed against a contagious…
invented by claude Chappe
Telegraphy is the long-distance transmission of messages where the sender uses…
invented by Edward Jenner
Edward Jenner develops the first successful vaccine, the smallpox vaccine.
Suggest an invention you think it should be here
Inventions that changed the world
Leave a Reply