Glass is everywhere—windows, bottles, phone screens—so common that we hardly stop to think about it. It feels so natural, yet it’s entirely man-made. We often question what everyday objects ...

Glass made by the latter process is called plate glass ... 1? substituted for it. Its use is to aid the workman iu rotating the bulb, so as to keep it as nearly as may be to the globular shape.

Fran Scott learns how glass is made in a factory. The raw materials are described, together with the use of soda ash to lower the melting point, making it easier to form into useful shapes.

BOY:'We saw glass being made out of sand. The sand is mixed with other ingredients. And put into a big hot oven, and heated up until it is extremely hot. And then it all melts.' GIRL:'Then it's ...