Material and Frequency
This type of material absorbs or absorbs all the light.
What is opaque?
This type of wave is used in tvs, garage door openers, and radios.
What is radio frequency?
What are red and purple?
Marie Curie helped develop this type of machine.
What is an x-ray machine?
These are the wavelengths of the electromagnetic spectrum in order from shortest to longest.
What is radio, microwave, infrared, visible, ultraviolet, x-ray, and gamma?