The electromagnetic spectrum
Schlüsselwörter
electromagnetic,
force,
interaction,
radiation,
device,
appliance,
safety,
scale,
measure,
chart,
diagram,
radioactive,
pollution,
protection,
hazard,
danger,
technology,
wave,
spectrum,
source,
effect,
emission,
emitting,
physics,
science,
educational,
powerline,
number,
hertz,
infographic,
electrical,
electricity,
frequency,
energy,
gamma rays,
x-ray,
radio,
wi-fi,
wireless,
mobile
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