A diagram of the EM spectrum, showing the type, wavelength (with examples), frequency, the black body emission temperature. Adapted from EM_Spectrum3-new.jpg, which is a NASA image.

The butterfly icon is from the P icon set, P biology.svg
The humans are from the Pioneer plaque, Human.svg
The buildings are the Petronas towers and the Empire State Buildings, both from Skyscrapercompare.svg
Own work
Inductiveload