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HSU Gravity Research Laboratory

Science A - Room 264
Lab Phone: x4981

Primary Research Areas


Overview

After over 300 years of experimentation, the true nature and implications of gravity are not fully understood. Here at HSU, we are creating a laboratory to investigate the subtle properties of this familiar force of nature.

Gravity and quantum mechanics are fundamentally inconsistent in the current frameworks of the Standard Model and General Relativity. String theory promises a possible resolution of this issue at the cost of introducing new spatial dimensions (Arkani-Hamed, et al.). These dimensions will necessarily alter the Newtonian inverse-square law on distance scales similar to that of the size of these extra dimensions.  

Dr. Hoyle's Gravity Research Presentation

In April of 2008, current HSU student Liam Furniss presented the lab's preliminary findings at the National Conference of Undergraduate Research (NCUR) in Salisbury, Maryland. Mr. Furniss' paper was accepted for publication in the annual conference's proceedings, which will be printed and available in September.

NCUR 2008 Paper (accepted version)
NCUR 2008 Presentation Slides


People

PI: C.D. Hoyle, x3235

Current Students:        

Holly Edmundson

Liam Furniss

Nathan Rasmussen

Former Students:

Jacob Crummey

Edward Kemper


Support

We are grateful for financial support provided by the HSU College of Natural Resources and Sciences, HSU Office for Research, Graduate Studies, and International Programs, and Research Corporation grant CC6839.


Photos

Vacuum Chamber

Initial testing of our vacuum chamber,
custom-built by Atlas Technologies


Chamber

Close-up of our vacuum chamber
We've pumped it down to less than a microtorr!


Optical readout system testing



Our "home-made" laser diode driver circuit




Our vacuum chamber inside our thermal isolation chamber, minus the floor

 



Data aquisistion using National Instruments SCC-68s and LabView

 


Humboldt State University
Department of Physics and Astronomy
Tel: 707.826.3276
Fax: 707.826.3279
Email