Assertion: led's light | /r/CreatedBy | blue/yellow combination
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Source sentences:
text: Three main types of white LEDs are available, the first is actually a blue LED in which the emitted light activates a yellow phosphor coating to give the effect of white light, however the white light produced by this blue/yellow combination, unlike sunlight does not have an even energy spread over the whole light spectrum so is not particularly suitable for accurate colour matching applications.