As we mentioned in our previous post, we will be sharing some facts on science. At the same time, you could also comment on our posts and ask us some questions on science like... who invented the air-con? Who discovered cells? And so on. But please don't ask us questions from your science homework. And now, I will share with the first question and its answer.
Who invented the marker? (the things we use to write on boards not the people who mark your examination papers)
The permanent marker was invented in 1952 by Sidney Rosenthal.
A permanent marker is a type of marker pen that is used to create permanent writing on an object. The ink of the marker is waterproof. It is capable of writing on a variety of surfaces from paper to stone. They come in a variety of tip sizes (ultra fine to wide), shapes (chisel point, bullet tip, and wide bristle), and colours (metallic, or ultraviolet reactive). Permanent marker is another name for "waterproof" marker.
---JERICA
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