What Happens to Glasses Frames When Plunged into Cold Water?

Glasses Frames Material and Reaction to Cold Water

When glasses frames are plunged into cold water, not all materials will react the same. Knowing how different materials behave in such situations can help you better understand how to care for your eyewear. Let's explore which specific materials shrink when exposed to cold water.

Frames Material Shrinking in Cold Water

Not all glasses frames will shrink when immersed in cold water. However, there are two main materials commonly used in glasses frames that exhibit this behavior: Pyrex and metal.

The Behavior of Pyrex and Metal Frames

Pyrex: When Pyrex frames are plunged into cold water, they exhibit minimal shrinkage due to their low coefficient of expansion. Pyrex is known for its ability to withstand sudden temperature changes without cracking or breaking easily.

Metal: On the other hand, metal frames tend to shrink when exposed to cold water. This is because metals have higher coefficients of expansion compared to glass, causing them to expand more than glass when subjected to temperature changes.

Final answer:

Pyrex and metal frames shrink when plunged into cold water due to their different coefficients of expansion.

Explanation:

The two frame materials that shrink when plunged into cold water are Pyrex and metal. When immersed in cold water, Pyrex contracts less compared to other materials, leading to less strain. On the other hand, metals have higher coefficients of expansion than glass, causing them to expand more than glass when exposed to cold water.