Pot Noodles will never be edible heated with a laser or not! 😉
This is something that cannot be answered off the top of my head but it is all to do with the power of the laser and how that power is transferred to the water. The bonds in water are vibrated best by microwaves – hence a microwave in the kitchen – and laser light has a much shorter wavelength so it is not suited to heating water really.
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