The first gold coins in the United States were issued back in 1795. The Unites States Mint set the value of the U.S. Dollar at 24 grains of gold. The value was based in accordance with the world price on the precious metal, which at that time was $19.39 per troy ounce.
One thing you"ll find about photography is that there is a lot of confusing vocabularly words. Aliasing, which is a common word in the world of digital everything (video games, CGI, photography), is one of those words that everyone has heard, but may not quite understand. And the anti-aliasing feature found on many digital cameras doesn"t do much to explain why you should use it. Not to worry though, for anti-aliasing is no where near as complicated as it may sound.