Podcast

Podcast Official answer continues the misconception that the spark gap in the transmission antenna causes radiation, rather than acting as break down switch in a LC circuit.

Fridge magnets use a clever backing magnets to direct the magnetic field into the fridge.  Podcast

I read this really well written article by Cathal O'Connell. The general idea is brain rest after a period of sickness. I struggled with 400,000 year age where I remembered 380,000 from: " When it originated some 380,000 years after the Big Bang—this time is generally known as the "time of last scattering" or the period of recombination or decoupling—the temperature of the universe was about 3000 K." found in Wikipedia but I remember other sources. To be fair it probably took some time. Of interest to me the image processing to take out the doppler shift from the CMB and the analysis of the bumps in the power spectrum Fourier frequency analysis of the CMB to support the inflation model. The Planck data is so good it brings a tear to the eye..... This all came out while I was sick, so I haven't yet read articles explaining what it means for inflation, cosmic strings and measures of dark matter/energy. We live in truly wondrous times. Podcast

From my background I am always going to have difficulties with the Copenhagen "Wave-Particle Duality" and classical electrons etc. I try to explain Entanglement from stuff I did in the lab. About 10 years ago I just absent mindedly churned out 1000 or so "artworks" in a few months. Kids absolutely loved them, but art experts said they were rubbish.  I just used  a colour pallet from lasers and arranged things to map mathematical functions. This one just says that entanglement doesn't violate causality. Although I have remembered the key ideas, after the ops it is still foggy.

The less water the stronger the acid ... This seams the strongest acid water, where the water is extracted from the acid itself creating this Siamese twin duck. Podcast

A historical tour of  Lavoisier and Priestly and their animal helpers. Podcast

Get a tour of this acid that is an anhydride of itself. Podcast

A valiant attempt at a molecular tour of this indicator, perhaps too many atoms and too much acid base theory. Podcast

A second attempt to tame this molecule, this time using papercraft of the mind. Podcast