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Based on current knowledge about microwave radiation, the agency believes that ovens that meet the FDA standard and are used according to the manufacturer's instructions are safe for use.” Plus ...
Products may use the term "microwave safe", may carry a microwave symbol (three lines of waves, one above the other) or simply provide instructions for proper microwave oven use. Any of these is an indication that a product is suitable for microwaving when used in accordance with the directions provided. [98]
Microwave and other radio frequencies cause heating, and this can cause burns or eye damage if delivered in high intensity, [38] or hyperthermia as with any powerful heat source. Microwave ovens use this form of radiation, and have shielding to prevent it from leaking out and unintentionally heating nearby objects or people.
High-power microwave sources use specialized vacuum tubes to generate microwaves. These devices operate on different principles from low-frequency vacuum tubes, using the ballistic motion of electrons in a vacuum under the influence of controlling electric or magnetic fields, and include the magnetron (used in microwave ovens ), klystron ...
Return the bowl to the microwave and cook on high until the marshmallows melt, 20 to 30 seconds. Stir well again. Add any additional mix-ins if you like, like nuts or shredded coconut.
Pack the mixture into a microwave-safe baking dish, pressing to create an even surface. In a small bowl, mix the ketchup and brown sugar. Brush the top of the meatloaf with half of the sauce ...