Problem description:

There are two kinds of marshmallows, one is like a cloud, both are shredded sugar, and the other is very elastic. How are they made respectively?

Analysis:

Cloudy marshmallows: ingredients: white sugar.

When I was a child, I saw a device for making marshmallows. There is a rotatable metal container in the middle. There are many small holes on the outside of the metal container, but there are no holes on the bottom of the container. The kerosene lamp is placed in the lower part of the container. Firstly, the burner is ignited to heat the container, and then the container with small holes in the side wall is rotated by the pedal device. When the rotating container is heated to a proper temperature, white sugar is added from the opening at the upper part of the container, and the white sugar is heated and melted by the burner at the lower part to become liquid. Liquid sugar is thrown out from the small holes in the side wall of the container under the action of centrifugal force, condensed by air and turned into white filaments, and stirred with a stick to form countless cotton candy.

The principle of the spinning process for making cotton candy and glass fiber is actually the same, except that the glass fiber spinneret is a platinum nozzle (of course, the hole is much smaller), and the temperature of the glass liquid is much higher, but the spinneret of the spinning process does not rotate, and the glass liquid is ejected from the spinneret by the pressure applied to the upper part of the material.