Introduction In a previous Physics Forums article entitled “How to Master Projectile Motion Without Quadratics”, PF user @kuruman brought to our attention the vector equation ##frac{|V_0 times […]

## Identifying the Source of a Sound

January 3, 2022• Physics 15, 1 Torben Pastore had careers in rock n’ roll, furniture design, and construction before beginning a research career in psychoacoustics. […]

## Investigating Some Euler Sums | Physics Forums

So, why only odd powers? Mostly because the even powers were solved by Leonard Euler in the 18th century. Since the “mathematical toolbox” at that […]

## “Black Hole” of Atoms Observed

January 4, 2022• Physics 15, 3 Researchers have imaged the long-sought electron charge distribution of a halogen atom, with the picture resembling the bright ring-like […]

## Cutting the quantum mustard | Quantum Frontiers

I had a relative to whom my parents referred, when I was little, as “that great-aunt of yours who walked into a glass door at […]

## How Quantum Information Theorists Revealed the Relativity Principle at the Foundation of Quantum Mechanics %

This Insight is a condensed version of No Preferred Reference Frame at the Foundation of Quantum Mechanics. Reference numbers here correspond to that paper. This […]

## Long-Range Coupling Affects Entanglement Dynamics

January 5, 2022• Physics 15, 2 Three new studies predict the measurement-induced phase-transition behavior for quantum systems that have long-range coupling between their qubits. Figure […]

## Quantum steampunk is heading to bookstores!

I’m publishing a book! Quantum Steampunk: The Physics of Yesterday’s Tomorrow is hitting bookstores next spring, and you can preorder it now. As Quantum Frontiers […]

## Corrections to MIT Open Courseware: Systems of Varying Mass

Corrections to MIT Open Courseware 8-01sc classical mechanics, fall 2016 Applying Newton’s Laws to systems of Varying Mass PDF Course Link My concerns with the […]

## Stable Hard-Sphere Packings with Arbitrarily Low Density

January 5, 2022• Physics 15, s1 A new strategy for packing hard spheres of different sizes could lead to novel ways of creating strong, lightweight […]