BSL Sign Language Dictionary
Search and compare thousands of words and phrases in British Sign Language (BSL). The largest collection online.
How to sign: an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m
Similiar / Same: radio emission, radio radiation
Categories: electromagnetic radiation, electromagnetic wave, nonparticulate radiation
Within this category: sky wave, ground wave, radio signal, carrier wave, short wave, medium wave, long wave
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