WEBVTT - How does an Indiglo watch work?

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<v Speaker 1>dot com, slash Stuff Welcome to Brainstuff front house, stuff

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<v Speaker 1>works dot com Where smart Happens. Hi, I'm Marshall Brain

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<v Speaker 1>with today's question. How does an indo glow watch work.

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<v Speaker 1>The basic technology behind the indo glow watch is called electroluminescence.

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<v Speaker 1>Electroluminescence is the conversion of electricity directly into light. This

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<v Speaker 1>is not how an incandescent ball works. In an incandescent ball,

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<v Speaker 1>the electricity produces heat and the heat produces light. Electroluminescence

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<v Speaker 1>is much more efficient because it converts the electricity directly

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<v Speaker 1>to light. The most common example of electro luminescence that

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<v Speaker 1>we see on a regular basis is a neon sign.

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<v Speaker 1>In a neon sign, high voltage energizes the electrons and

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<v Speaker 1>the neon atoms and they emit photons. In an indiglow watch,

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<v Speaker 1>a very thin panel uses high voltage to energize phosphor

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<v Speaker 1>atoms that produced the light. The panel itself is incredibly simple,

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<v Speaker 1>as described in the time x patent. You take a

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<v Speaker 1>thin glass or plastic layer, you coat it with a

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<v Speaker 1>clear conductor. You coat that conductor with a very thin

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<v Speaker 1>layer of phosphor. You coat the phosphor with a thin

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<v Speaker 1>plastic and then you add another electrode. Essentially, what you

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<v Speaker 1>have is two conductors or a capacitor with phosphor in between.

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<v Speaker 1>When you apply one D two hundred volts a C

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<v Speaker 1>to the conductors, the phosphor energizes and it begins emitting photons.

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<v Speaker 1>Creating that high voltage can be a problem in a

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<v Speaker 1>wrist watch. The watch only has this little one point

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<v Speaker 1>five volt battery inside it. To produce the one two

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<v Speaker 1>hundred volts, a one to one hundred transformer is used

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<v Speaker 1>by charging the primary coil of the transformer with a

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<v Speaker 1>transistor that's switching on and off very rapidly. The secondary

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<v Speaker 1>coil rises to a hundred fifty volts or so. You

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<v Speaker 1>apply that to the panel and the panel starts to glow.

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<v Speaker 1>For more on this and thousands of other topics. Because

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<v Speaker 1>it how staff works, dot com Jack threads is the

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<v Speaker 1>online shopping destination for dudes. Everything on the side is

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<v Speaker 1>up to off, all styles are curated, so buyer's remorse

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<v Speaker 1>just doesn't happen. What's more is if you were brain Stuff,

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<v Speaker 1>you can skip the membership wait list and get instant

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