Mind Matters Natural and Artificial Intelligence News and Analysis

TagLandauer's Principle

visualization-of-virtual-world-stockpack-adobe-stock
Visualization of Virtual World

Does Information Weigh Something After All? What If It Does?

At the rate we create information today, one physicist computes that in 350 years, the energy will outweigh the atoms of Earth

In the 1960s, IBM researcher Rolf Landauer (1927–1999) observed that if the logical information in a computational system decreased, then the physical entropy in the system must increase (Landauer’s Principle). This conclusion follows from the principle that the entropy in a closed system can never decrease. A decrease in the logical information corresponds to a decrease in entropy. And factoring in the principle that the entropy cannot actually decrease, the physical system itself must increase in entropy when the information decreases. This increase in entropy will result in the emission of heat, and a reduction of energy in the system. Now Melvin Vopson, a physicist at the University of Portsmouth, has taken Landauer’s principle to the next logical step. He…