does it even pose any threat to the lab technician in the 1st place?
Food absorbs microwave radiation by excitation of molecular bonds, which cause the atoms to vibrate. Typically, microwaves excite the OH bond in water. The metal will reflect microwaves, and (by itself, i.e. not in contact with a hydrogen-bearing organic substance (usually containing water)) it can cause electrical discharges if the power density is high enough. Any discharge can damage the microwave. Actually, if one puts a metal object (e.g. spoon) in a piece of food or in liquid containing water (e.g. coffee, tea, soup, stew) there is no problem. But put a metal object on a plate and one will likely see electrical discharges, like lightning. If one wraps (completely surrounds) food in Al foil, the food will not heat in the mircrowave, but one will get electrical discharges. Putting food on a metal plate is OK in some microwave models. The microwaves are simply reflected into the food.
i think noif the guys using it without proper information on how to use it. they must aware on how to use it and the manual should be read before using it. it doesnt mean we knows everything because we are living in the modern world but we must follow also the instruction given by the supplier
is it safe operate a microwave with empty microwaveable cup to heat up cup?
Its very exspensive to raise a child you need to by a crib, blankets, formula if you don't breast feed, pampers, toys, bath tub, clothes, and so on it takes alot to raise a baby