1. An invention by Robert Boyle
Matches
An invention by Robert Boyle

2. For thousands of years people made fire by rubbing sticks together or striking flint and steel together.

3. Robert Boyle a scientist from the Renaissance discovered that rubbing sulfur with phosphorus would cause an instant flame. He tipped a wood splinter in sulfur and rubbed it against a paper coated with phosphorus.

4. But Boyle´s matches weren´t safe because they ignited too easily.

5. Boyle´s experiment led to …
John Walker´s matches that were a yard long.
Alonzo D Phillips made friction matches but they ignited too easily .
Carl Lundstrom made the first safe matches with red phosphorus which is not as flammable as white phosphorus.

6. Sources Wikipedia Mysite.du.edu Ideafinder.com PowerPoint clip art
Slides 2-4 paint by Bernardo Reyes