Newtons Apple
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Hi, so I've been just obsessing over color and light for a while... but I'm trying to understand something. To my knowledge there's two many methods of creating a white LED.
1. Taking a blue LED and putting some sort of phosphor like zinc on top of it, and as the blue light passes through, it mixes with the phosphor to create a white light.
2. Mixing a red, green and blue led together to produce a white light.
Now my main question is...are these two whites the same? Sure they both will look white to us... but are they the 'same' white? If we measure with a spectrometer both methods, will we see the same output?
I've gotten into growing plants recently and they use different color light for their needs such as creating glucose, rooting, flowering etc. They can do this naturally with the light from the sun which is a full spectrum. Is the Blue LED method going to provide the same thing? Even though it's technically just blue? Does it turning white from the phosphor able to create the full spectrum of light?
Like wise if we take a prism and hold it up to the Blue LED method, will we only get blue out of the spectrum? Or will it show the full rainbow?
1. Taking a blue LED and putting some sort of phosphor like zinc on top of it, and as the blue light passes through, it mixes with the phosphor to create a white light.
2. Mixing a red, green and blue led together to produce a white light.
Now my main question is...are these two whites the same? Sure they both will look white to us... but are they the 'same' white? If we measure with a spectrometer both methods, will we see the same output?
I've gotten into growing plants recently and they use different color light for their needs such as creating glucose, rooting, flowering etc. They can do this naturally with the light from the sun which is a full spectrum. Is the Blue LED method going to provide the same thing? Even though it's technically just blue? Does it turning white from the phosphor able to create the full spectrum of light?
Like wise if we take a prism and hold it up to the Blue LED method, will we only get blue out of the spectrum? Or will it show the full rainbow?