The 50 Year History of Play-Doh
tanagra writes "50 years ago U.S. Patent No. 3,167,440 was granted to Noah McVicker and Joseph McVicker for a "plastic modeling composition", (which was originally intended to be a wallpaper cleaner) now called Play-Doh. Little did they know that they had created the substance of childhood memories as well as many a childhood meal, unfortunately. Play-Doh persists as one of the most well known and popular children's "toys". As you attempt to clean your children's Play-Doh out of the carpet, the car, and the bathtub; take a look back with us at how it all got started."
or you have SO that does.
t ed_colo.html
http://www.boingboing.net/2006/05/03/playdoh_scen
cologne that smells like playdoh.
He got that way after suffering (as a young child) a very specific brain injury as a result of a disease. No mention of any radioactive poisonous spiders, however.
They say the first thing to go is your penis. Well, it's either that or your brain. I forget which...
You can also take a look at the patent itself at http://patft1.uspto.gov/netahtml/PTO/srchnum.htm. Then search for patent US 3167440. Click the images button. They have a terrible viewing system, but it's there!
You can lead a horse to water, but you can't make it dissolve.
In my college physics lab we used play-doh as a resistor - figuring out how resistance changed with varying surface areas and the like. Also measured whether there were differences in resistance among different colors of play-doh. Needless to say the play-doh got pretty fried at the points where you connected it to the rest of the circuit. Of course the play-doh was used more for constructing artistic masterpieces than using it as a resistor!
:x :x :x
I had my final earlier tonight too - that was rough - and no mention of play-doh resistors - in fact very little problems dealing with dc circuits at all, the only stuff I was really good at!
Now, why am I paying 40,000 bucks a year for this
Which points out yet another flaw with the current patent system - the whole intent of patents was to encourage people to make their inventions known, so that once they expire the knowledge becomes public domain. Here, with humble little play-doh, we have an example of that intent not working, being evaded - the patent was granted, and has expired, yet nobody knows the formula... perfect Playdoh making has NOT become something anyone can do, and the stuff has not become a generic commodity as patent law intended. Playdoh got a patent without really truly revealing their invention, and now still gets to maintain its secret.
Play-doh got a 20 year free ride, essentially having ripped off the public.
This space available.