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### The Electromagnetic spectrum

Posted: Sun Apr 15, 2018 9:42 pm
Do we have to memorize the spectrum if not how do we calculate its energy in order?

### Re: The Electromagnetic spectrum

Posted: Sun Apr 15, 2018 9:52 pm
I don't think we'd have to memorize the electromagnetic spectrum if it were on a test and we have to put them in order, but if we had to calculate the energy of a particle, I think you'd use E = hv.

### Re: The Electromagnetic spectrum

Posted: Sun Apr 15, 2018 9:54 pm
I think that the spectrum would be provided or at least the specific location of a light on the spectrum would be given if needed to answer a question.

### Re: The Electromagnetic spectrum

Posted: Sun Apr 15, 2018 9:57 pm
Do we have to memorize the spectrum if not how do we calculate its energy in order?

I'm not really sure we have to memorize the spectrum, but I feel it would be very helpful.
To answer your question, to calculate the energy first use (c = λ × ν), then after finding the frequency use Plank's equation to calculate energy of the light ( E = hf). Then by doing so you can place them in order.