Yes, glass can get hot in a microwave. However, the extent to which it heats up depends on various factors, including the type of glass, the microwave's power, and the duration of exposure.
Microwaves work by emitting electromagnetic waves that excite water, fats, and sugars in food, causing them to vibrate and generate heat. Glass, being a relatively non-absorptive material, does not directly absorb microwave energy like food does. However, some types of glass do contain impurities or air pockets that can heat up when exposed to microwaves. Additionally, if the glass contains food or liquid, the content itself will heat up and transfer heat to the glass.
It's essential to be cautious when using glass in the microwave to prevent it from getting too hot and potentially shattering due to uneven heating or thermal stress. Always follow the manufacturer's recommendations for microwave use and consider using microwave-safe glassware to reduce the risk of accidents or damage. Microwave-safe glass is designed to withstand the heat and rapid temperature changes associated with microwave cooking.