Title

Measuring the Pressure of Photons

Poster Number

19

Lead Author Major

Physics

Format

Poster Presentation

Faculty Mentor Name

James Hetrick

Faculty Mentor Department

Physics

Abstract/Artist Statement

Photons are massless particles. However they do carry momentum. When they are absorbed or reflected by an object, their momentum changes, and thus they impart a force to the object with which they interact. Using a very sensitive pendulum, we are able to measure this force from the light of a laser. We pulse the laser at the resonant frequency of the pendulum and drive it into oscillation.

Location

DeRosa University Center, Ballroom

Start Date

20-4-2013 10:00 AM

End Date

20-4-2013 12:00 PM

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Apr 20th, 10:00 AM Apr 20th, 12:00 PM

Measuring the Pressure of Photons

DeRosa University Center, Ballroom

Photons are massless particles. However they do carry momentum. When they are absorbed or reflected by an object, their momentum changes, and thus they impart a force to the object with which they interact. Using a very sensitive pendulum, we are able to measure this force from the light of a laser. We pulse the laser at the resonant frequency of the pendulum and drive it into oscillation.