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Traffic Lights


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Guest kiplacombe
Posted

I was wondering what compounds are used to make red, amber, and green colored glass in old traffic lights. Google was no help at all. This is for an assignment due really soon, so if anyone knows, tell me.

Posted

Barium salts (Chlorate) are used for Green.

Sodium is used for Yellow.

and Strontium is used for Red.

 

Copper salts are used for Blue :)

 

edit: Oooops, just realised, it was a Gl;ass thingy and not a Pyro one (we have traffic lights in those too).

 

Chromium salts give the yellow

copper for the green

 

I`m not too sure about the red?

 

cobalt gives Blue.

Guest kiplacombe
Posted

Thanks. I'm actually going to pass.

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