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Not So Great Inventions #5

Science brain teasers require understanding of the physical or biological world and the laws that govern it.


Puzzle ID:#16105
Fun:*** (2.79)
Difficulty:** (1.92)
Submitted By:od-1Aca****
Corrected By:boodler




Yet another inventor trying to find a better way to remove ice and snow from his car windows has come up with an almost great invention. This product uses a spray can containing a pure alcohol (in this case methyl hydrate) to melt away ice and snow from the windows. Alcohol (or methyl hydrate) is often used as gas line anti-freeze and in a mixed form in windshield washer fluid to keep it from freezing. It works really well to melt ice and this product is still sold even though it almost never works as the manufacturers claim. But why does it fail to produce a clear ice-less window?

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Jan 13, 2004

Good point about the advertising! Also, if lazy people are into the stuff, the fact that it takes multiple applications is even better for the manufacturer since the consumer buys more as they run out. Interesting teaser.
Jan 18, 2004

do u make these up?
Jan 19, 2004

Most teasers I do but some I just find interesting facts, on the internet , in books, on tv and just turn them into teasers. Its easy give it a try.
Feb 01, 2004

Correct me if I'm wrong, but couldn't a person spray the window and wipe off the liquid with a towel? It takes a little while before the water would freeze again.

Great teaser, by the way.
Jul 06, 2005

Good to know, i live in an area were there is a lot of snow and ice in the winter. If i see any one bothering to use the stuff this winter i will tell them not to waste their time.
Sep 19, 2005

good try
Aug 22, 2006


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