The definition of the meter (m), which is the international unit of length, was once defined by a physical artifact - two marks inscribes on a bar of platinum-iridium. Today, the meter (m) is defined in terms of constant of nature: the length of the path traveled by the light in vacuum during a time interval of 1/299, 792, 458 of a second. The Length - Evolution from Measurement Standard to a Fundamental Constant explains the evolution of the definition of the meter.
Rainbow flag (LGBT movement) For other uses, see rainbow flag. The rainbow flag is a symbol of lesbian, gay, bisexual, and transgender (LGBT) pride and LGBT social movements in use since the 1970s. LGBT symbols. The rainbow flag, commonly the gay pride flag and LGBT pride flag, is a symbol of lesbian, gay, bisexual, and transgender (LGBT) pride and LGBT social movements.
Best Answer: The original gay pride flag had 8 colors, while the current one only has 6. Here is what they all mean despite two of them being removed (hot pink and turquoise). Source(s): http://en.wikipedia.org/wiki/Rainbow_fla... While the traditional rainbow arc is a 'religious symbol' the rainbow used to show gay pride is actually a 'banner' ... it's a BEAUTIFUL banner with its many colors all lined up, side by side. And that is why the rainbow banner or 'flag' (not the 'arc,' which is the colors top to bottom) is used.