🔬Microwave ovens originated from RADAR technology developed during World War II.
🌡️Microwaves heat food by making water molecules vibrate, creating frictional heat.
📡Microwave radiation is not harmful and microwave ovens are designed to prevent leakage.
⚡Metals in the microwave can create sparks due to concentrated electrons, but not all metals spark.
🥘Cooking with a microwave is safe, convenient, and can be used for various types of food.
How do microwave ovens work?
—Microwave ovens heat food by making water molecules vibrate, creating frictional heat.
Is microwave radiation harmful?
—Microwave radiation is not harmful and microwave ovens are designed to prevent leakage.
Do all metals spark in the microwave?
—Not all metals spark in the microwave, but metals with concentrated electrons can create sparks.
Are microwave ovens safe to use?
—Microwave ovens are safe to use when used according to the manufacturer's instructions.
What are the benefits of cooking with a microwave?
—Cooking with a microwave is convenient, quick, and can be used for a variety of foods.
00:07American engineer Percy Spencer developed RADAR technology during World War II.
00:36Spencer discovered that microwaves from a RADAR instrument could melt a candy bar.
01:06Microwaves are part of the electromagnetic spectrum and have lower frequencies than gamma rays and X-rays.
01:36Microwaves interact strongly with water molecules found in most foods, making them vibrate.
02:06Microwave ovens use cavity magnetrons to generate a continuous stream of microwaves.
03:20Microwaves heat food through friction, but they do not alter it chemically.
03:56High voltages at sharp edges and small gaps in metal objects can create sparks in the microwave.
04:13Microwavable packaging often uses a thin metal coating to crisp the food's surface.
