Can someone please help me with this question?

You are going to invent a new device that people can use instead of a microwave oven to warm up leftovers. Which type of electromagnetic wave would be most useful to investigate?

gamma rays

X–ray

radio waves

infrared waves

Thanks,

~Micah K.

Question

Can someone please help me with this question?

You are going to invent a new device that people can use instead of a microwave oven to warm up leftovers. Which type of electromagnetic wave would be most useful to investigate?

gamma rays

X–ray

radio waves

infrared waves

Thanks,

~Micah K.

anonymous · Answer

@Callisto

anonymous · Answer

I know that it isn't B, and I believe that gamma rays are too dangerous. Therefore, it must be C or D. Correct me if I'm wrong.

anonymous · Answer

Radio waves are used in microwaves, and if I want to create a unique device, different from a microwave, that probably means that C isn't an option either. So it must be D. Am I right?

callisto · Answer

Hmm.. You can hardly warm food using radio wave (consider its frequency, the energy is pretty low)... A and B should be ruled out, and you've got the reason.

anonymous · Answer

But microwaves use radio waves.

anonymous · Answer

That is how the original device was invented.

callisto · Answer

"Microwaves are high frequency radio waves"
Ok :|

callisto · Answer

In this case, using radio waves would be considered as an "old idea".

anonymous · Answer

Okay. So the answer is D?

callisto · Answer

Yes.

anonymous · Answer

Okay, thanks! :D

callisto · Answer

PS: We do have infrared ovens nowadays..

callisto · Answer

You're welcome.

anonymous · Answer

Cool, I didn't know that.

callisto · Answer

Neither did I :)

anonymous · Answer

Haha.