Did you know that the microwave was invented by accident? In 1946, engineer Percy Spencer was testing a magnetron when he noticed the chocolate bar in his pocket had melted. This led to the invention of the microwave oven, revolutionizing how we cook. Another interesting fact is that the washing machine was invented in 1782 by H. Sidgier. However, it wasn't until 1908 that the first electric washing machine was introduced, making laundry day much easier for households. Refrigerators have come a long way since their invention in the 18th century. The first refrigeration machine was built in 1755 by William Cullen, but it wasn't until the early 1900s that home refrigerators became popular. Now, they are a staple in every household. Dishwashers were first introduced in the 1950s and have since become a time-saving essential in the kitchen. Before dishwashers, dishes were washed by hand, a tedious task that took up a lot of time. Finally, the vacuum cleaner was invented by Hubert Cecil Booth in 1901. His invention was inspired by seeing a demonstration of an air pump used to remove dust from chairs. This led to the creation of the modern vacuum cleaner, making cleaning floors much easier.