Invention Countdown, #4 and #3

Make sure to read my rant, Making the WRONG Statement.

Here we are again for the second to last week of the Invention and Discovery countdown.  This week are two completely unrelated items, but there is a small connection in hindsight.  

#4  MPEG1-Audio Layer 3
You may know it better as the MP3 file.  Why is this all the way up at #3?  This theory of this data compression technology has been around since the 1890's when it was stated that one frequency could be cancelled out by another.  In 1959, Richard Ehmer described a series of curves that showed this phenomenon.  The actual work on this audio compression started in 1979, but it was considered useless for music because the engineers could not reproduce the quality.  The MP3, as we know it, was finally made public in the early 1990's.  Basically, it's a 100 year-old technology that took as long to invent.  By the way, you may hear that Suzanne Vega is the "Mother of the MP3."  This is because her a Capella song, "Tom's Diner," was used as the test model for the MP3.

#3  The Human Genome
The human genome is a discovery and not an invention, but it is quite important.  The Human Genome Project was started in 1990 and finally completed in June 2000.  During this time, DNA testing became admissible in court and it also allowed science to step closer to learning more about diseases and mutations.  There is a lot of very scientific information in this topic that I don't want to get into here.

So, I mentioned these two items have something in common.  Both of these, at one time, could be found on an Apple iPod.  When Apple introduced the high-capacity music player, scientists on the Human Genome Project discovered that it was also a useful portable data drive.  There you go, a little trivia for your Wednesday.  Have a good day.