Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Blinding Spheres
Name: Alexander
Status: other
Age: 20s
Location: N/A
Country: N/A
Date: 1999 

If you were to construct a perfect sphere which which was coated on the inside with a reflective substance and you stood inside, would you see anything? If you had a light with you, would you be blinded? Would you just see white light all around?

Inside a perfectly reflective chamber, tight would keep bouncing around until it hit something that absorbs it. If you were to stand in the chamber, that absorbing object would be you. As soon as you turned the light off, the light would be pretty much all gone - at the speed of light, it wouldn't take very long for every last photon to reach and be absorbed by you.

Richard Barrans Jr., Ph.D.

Click here to return to the Physics Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (, or at Argonne's Educational Programs

Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory