General · Language · Problem

What are axions – real or not?

So, what are axions? I’ve noticed more articles lately about axions. Why all the fuss, eh? • Wiki The axion is a hypothetical elementary particle postulated by the Peccei–Quinn theory in 1977 to resolve the strong CP problem [violation of the combined symmetries of charge conjugation and parity] in quantum chromodynamics (QCD). If axions exist… Continue reading What are axions – real or not?

General · Language · Problem

Are quantum jumps instantaneous?

In quantum physics, mathematically discontinuous changes – or jumps – between quantum states are popularly referred to as quantum leaps (remember the TV series). As to whether quantum leaps are instantaneous (zero time) or not – as well as random (without any harbinger) – is an open question in physics. This article below recaps additional… Continue reading Are quantum jumps instantaneous?

General · Language · Media

Connecting everyday experience with quantum effects

NASA’s outreach efforts over the decades have touted the benefits of space science in our (macroscopic) everyday lives. Technology. How about quantum physics? A recent YouTube video by Sabine Hossenfelder (below) is a useful start in answering the question: How does our “big and warm” everyday experience evince quantum effects? (from transcript) … the weird… Continue reading Connecting everyday experience with quantum effects

General · Language

Universal symmetries – what really is broken?

An article from Quanta Magazine (below) recaps the history of space-time symmetries in physics and how those symmetries have, in a sense, been simplified: Galilean (Newtonian) static, separate space and time. Relativistic “flat” space-time – Minkowski / Poincaré / Einstein. de Sitter spherical space-time: “… in the same way that the finite speed of light… Continue reading Universal symmetries – what really is broken?

General · Language

When conservation of energy goes out the window?

This post was inspired by Don Lincoln’s YouTube video “Subatomic Stories: Is the Planck length really the smallest?” In his Q&A (where he responds to questions from prior videos), he notes a caveat about the law of conservation of energy. Energy may not be conserved … because space-time can change. He offers some links for… Continue reading When conservation of energy goes out the window?

Language · Media

Making matter from light – ultra energies and unification of forces

E = mc² The Holy Grail of modern physics is a so-called theory of everything, a unified field theory, a theory which unifies all known “forces.” That is, unifies all the fundamental interactions of nature. The three “quantum” interactions (electromagnetism, weak, strong) and gravitation. A conventional sequence of theories depicts final unification as occurring at… Continue reading Making matter from light – ultra energies and unification of forces

General · Language · Media · Site

Sightseeing near the speed of light – realistic simulation

Paraphrasing: Just a note before you go,A vision to be learnedTraveling near the speed of lightIt’s easy to get … Imagining how things would look when traveling near the speed of light is an interesting exercise. Using a freeware video game developed by MIT Game Lab (2012), this visualization (below) by The Action Lab is… Continue reading Sightseeing near the speed of light – realistic simulation