Very interesting. A minor note, there are three colored metals. Cesium is also gold-colored.

The way these Modern Marvel masterpieces seam together the historical to the present to make for a really great program is wonderful. Metal working for myself is practically a religion, and as I write this review I paused to examine a small complex component precision machined from a piece of T6061 aluminum to near microscopic close tolerances, to think of the impossibilities I would have faced in bringing such a thing from my mind into reality just 30 years ago makes it impossible for me not to marvel at how far we've come from the day only thousands of years ago when metals properties were first discovered. Yes, it's mostly jest and word play when I say "Welders and machinists were the original heavy metal band," but I'm completely serious when I say I honestly pity those who are clueless about the critical roles played by the arts and sciences involving metals in providing our incredible high startards of living we enjoy today. Their near boundless ignorance of technology not only makes them suckers for sellers of snake oils, but worse yet too often results in their buying into misanthopogenic philosophies based on junk science, causing them to deny themselves the joy of marveling at these great wonders resulting from man's close relationships with nature. This program was obviously made before the over throw of government by the" master race" minority who quickly put a stop to issuing any permits for new atomic energy plants, since the statement about moving to authorize the first permits in over 30 years was is no longer true. Interesting how these supreme beings viciously oppose every discipline including those in metal and energy, and even the free markets that led to their rapid advancements, all while at the same time demanding everyone recieve access to the modern medical care that exists not in spite of, but as a direct result of, and are entirely dependant upon, those disciplines they oppose. Was it Albert Einstein who said something about the only thing in the universe that's infinite is the stupidity of some people? If it wasn't, then he should have said it, because someone needs to say it, and if no one else has, then I said it.