there is no scientific evidence to suggest that radiation in a microwave spares living cockroaches or any other living organisms. Microwaves work by emitting electromagnetic radiation in the microwave frequency range, typically around 2.45 gigahertz. When this radiation interacts with water molecules in food, it causes them to vibrate, generating heat. This heat then cooks or heats up the food.
Microwaves are designed and tested to be safe for use with food and adhere to strict safety standards. The microwave radiation is contained within the appliance, and the oven's design ensures that it does not leak harmful levels of radiation.
Cockroaches are not immune to microwave radiation. If a cockroach were exposed to microwaves, it would be subjected to the same effects as any other living organism. The radiation would cause the water molecules within the cockroach's body to vibrate and generate heat, potentially injuring or killing the cockroach, just as it does to the food you cook in the microwave.
It's important to handle microwaves and all electrical appliances with care and use them as intended to avoid any accidental harm to living organisms and ensure your safety. Additionally, using microwaves to intentionally harm animals or insects is unethical and, in many places, illegal.