Paper Whites
Contributed By
- Original Source:Oregon Museum of Science and Industry
Conditions of Use:None Specified
Description
Visitors observe different paper samples under ordinary room light and under a black light. Visitors learn some of the chemical differences between different types of paper. They also learn that some chemicals can be identified by how they appear under a black light. Fibers that can be seen only under ultraviolet light can be added to paper for security reasons. Titanium dioxide (TiO2) is often added to paper to whiten it, brighten it, or make it more opaque (harder to see through). Paper with titanium dioxide looks reddish-purple under UV light. Less
Learning Registry Activity
Bookmarks
Topics and Grades
Grade: TK/K to 12
Topics: Chemistry, Physics, Earth & Space Science
Resource Pedagogy
Resource Type/Classification:
- Teacher Materials
Tool for: Students