Question

Questions for the day:
What is the electromagnetic spectrum? How does it work? What is the speed of light? What are the different types of waves in the electromagnetic spectrum?

Answer 1

Well first question you can probably look up on a search engine..but if you can't do that, what do you think the definition can be?

Answer 2

old question but will answer so this can be closed

I'll start with the definition of electromagnetic radiation: a form of energy characterized by oscillating waves caused by electric and magnetic fields



the electromagnetic spectrum, by extension, is the range of wavelengths/frequencies that a wave could have, and still be categorized as EM radiation

"how does it work" is a bit vague but I guess it "works" by categorizing EM radiation into sub-types according to wavelength/frequency ranges (for example, radiation in the 400-700nm-ish range is categorized as visible light)

Answer 3

the "speed of light" in a general sense is simply how far light radiation travels per unit time

in practical terms, it's ~3 * 10^8 m/s in a vacuum, slower in a medium

Answer 4

finally, you can just look at the EM spectrum to see what the diff. types of waves are but here's a list

radio waves
microwaves
infrared (IR)
visible
ultraviolet (UV)
X-ray
Gamma ray