While working on a sermon the pastor heard a knock at his office door. "Come in," he invited. A sad-looking man in threadbare clothes came in, pulling a large pig on a rope. "Can I talk to you for a minute?" asked the ma... Read more of Desert Island, Roosters Etc. Humor at Free Jokes.caInformational Site Network Informational
Privacy

   Home - Science Experiments - Things Worth Knowing - Wise Facts - Curious Facts



Artificial India Rubber








A cheap and useful substitute for Indian
rubber is prepared by mixing a thick solution of Glue with Tungstate of
Soda and Hydrochloric Acid. A compound of Tungstic Acid and Glue is
precipitated, which at a temperature of 86 degrees to 104 degrees F. is
sufficiently elastic to admit of being drawn out into very thin sheets.
On cooling this mass becomes solid and brittle, but on being heated is
again soft and plastic. This new compound can be used for many of the
purposes to which rubber is adapted.





Next: Rubber Stamps For Photographs

Previous: To Prevent Store Windows From Steaming



Add to Informational Site Network
Report
Privacy
ADD TO EBOOK


Viewed 1626