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Pronunciation Guide
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Listen to native speakers pronounce “radio wave” in real conversational contexts with synchronized timestamps and subtitles.
The chip then flips a series of transistors on and off, which subtly alters the current in the antenna.This modulates the radio wave, encoding the ID number of the card, which the antenna sends back to a reader in the toll booth.So the process is almost identical to the Cold War spying devices, but whereas they relied on sound to modulate the wave,