When you got back from vacation, did you ever notice that your digital clock was blinking at the incorrect time? This frequently indicates that there was a power interruption during your absence. Sometimes, particularly when it comes to your freezer, these interruptions might cause major problems.
Not having a digital clock can make it difficult to determine whether there was a power outage at all.
An American woman named Sheila Russell came up with this clever hack. Here’s how it works: Fill a plastic cup with water and freeze it. Once the water is completely frozen, place a coin on top. When you return from your vacation, check the cup. If the coin is at the bottom, it means your freezer thawed at some point.
