But it wasn't until the 17th century that attempts were made to harness the power exhibited by Heron's aeolipile for practical purposes. In the first century A.D., Hero of Alexandria invented the aeolipile, or primitive steam turbine. Credit: Public domain.
Borax is a good natural choice for cleaning mold. It is toxic if you swallow it, but otherwise, it does not emit dangerous fumes or chemicals when you use it. What makes it great to use on mold is that it disinfects the surfaces it cleans. You mix borax with water in a one cup to one gallon ratio.
Although plants need boron, too much of it will kill them, so borax can be used as an herbicide. Borax may also be used as an insecticide to kill roaches, ants, and fleas. In fact, it is also toxic to people. Signs of chronic toxic exposure include red and peeling skin, seizures, and kidney failure.The estimated lethal dose (ingested) for adults is 15-20 grams; less than 5 grams can kill a child or pet.y Anne Marie Helmenstine, Ph.D. Borax (also known as sodium borate decahydrate; sodium pyroborate; birax; sodium tetraborate decahydrate; sodium biborate) is a natural mineral compound (Na 2 B 4 O 7 â¢ 10H 2 O). It was discovered over 4000 years ago.