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Comments (6)
Mrs. Conant said
at 11:41 am on Oct 25, 2013
What is the origin of the name Iridium?
iridium said
at 10:00 am on Oct 29, 2013
I was named by the scientist, S. Tenant. My name comes from the Latin word, iridis. Iridis is the Latin word for rainbow!
Mrs. Conant said
at 11:34 am on Oct 28, 2013
Why would Iridium be used in spark plugs?
iridium said
at 10:50 pm on Nov 4, 2013
Technically I'm not used for spark plugs but an alloy of me is able to deliver good conductivity and extreme hardness. Therefore we can be manufactured with a small diameter causing there to a be a much lower voltage. With a lower voltage, there is less strain so less chance of failure, a larger gap which means a larger spark which equals more efficient combustion. Therefore we are a very popular spark plug choice!
Mrs. Conant said
at 11:38 am on Oct 28, 2013
What is the Alvarez hypotheisis and how is Iridium involved?
iridium said
at 12:54 pm on Nov 3, 2013
Two scientist Walter and Luis Alvarez found an unusually high concentration of me, and since I am very rare on Earth's crust, but abundant on meteorites and asteroids. They hypothesized that a large meteorite had struck earth's surface. The high concentration was found in 100 different sites all over the world, proving this was a worldwide event. The concentration was deep in the rocks, making the hypothesized asteroid impact date back to the dinosaur ages. Alvarez's hypothesis is the most known hypothesis to why the dinosaurs had gone extinct. I have already apologized to the dinosaurs, me and my buddies got lost, we were supposed to go to Mars. Whoops!
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