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electromagnetic
waves
checking
equipment
symbol
science
physics
ultraviolet
xray
electronic
spectrum
range
prism
light
sv
battery
infrared
device
graph
ammeter
tool
testing
coil
meter
antenna
electric
generator
scale
field
effect
force
energy
radiance
scientific
tech
technology
vibration
frequency
radio
electrical
experiment
icon
motion
graphic
animation
pictogram
hd
animated
item
line