Hold your right hand in front of a mirror. Or, just place your left hand in front of your right with palms facing. Now (in 3D) try to “swap in” (superpose) your left for your right hand. It’s not a replacement, eh. So, chirality. “Chiral” – a word that’s hugely important in physics. (Wiki)The term… Continue reading Chirality – the mirror mismatch
• “We are stardust, we are golden, we are billion year old carbon” — Woodstock by Joni Mitchell as performed by Crosby, Stills, Nash & Young. • Space.com > “Are we really made of ‘star stuff’ and what does that even mean? (video)” by Robert Lea (August 21, 2023) – These inspiring words from Carl… Continue reading Star stuff within us – we are stardust
In the 2014 science fiction action film Lucy, there’s a scene in a car where Lucy sees the radio frequency signals (streams) from cell phones and manipulates that part of the electromagnetic (EM) spectrum with gestures in order to listen to a call in progress. We are forever enveloped in an EM jumble, as Feynman… Continue reading EM jumble
