A newly developed instrument called the Fermilab Holometer has begun operating at the Fermi National Accelerator Laboratory (Fermilab) near Chicago, Illinois, USA. Image © Fermilab
The instrument seeks to determine if slight but simultaneous jingles of a mirror in two directions expose a fundamental type of holographic noise that always exceeds a minimum amount. Pictured above is one of the end mirrors of a Holometer prototype. Although the discovery of holographic noise would surely be groundbreaking, the dependence of such noise on a specific laboratory length scale would surprise some spacetime enthusiasts. One reason for this is the Lorentz Invariance postulate of Einstein’s special relativity, which states that all length scales should appear contracted to a relatively moving observer — even the diminutive Planck length. Still, the experiment is unique and many are curious what the results will show.