This publication and the video, Slinky Scientific Shindig, made possible by Phillips Petroleum Company for National Engineers Week 1998. Without Them Suppose you could step inside a time machine and go back 60 or 100 years.
Little things are often what are missed the most.
Milk and shampoo used to be sold in glass bottles, and that wasn't a problem unless you dropped one and it broke. Try these experiments, then use what you learn to list 10 or even 20 good candidates for plastic. Lay the aluminum strip across the books, making a level bridge. Lay the string parallel to the strip. Next place the canned good in the middle of the strip.