Bulbs and switches

Today two patterns based on electrical symbols to represent applications of tungsten (left) and ruthenium (right). Tungsten has the highest melting point of all metals. It was used extensively in the filaments of incandescent light bulbs throughout the 20th century and so I have based my pattern on a electrical symbol for an incandescent bulb.Continue reading “Bulbs and switches”

Roses are red, sunflowers are yellow

Following on from indium and thallium back in the p-block, some more colourful chemistry today with rhodium and chromium. I’m rather enjoying finding ways of getting some colour into a black and white design! William Hyde Wollaston was an English chemist who made his fortune by purifying and selling platinum. It was while extracting theContinue reading “Roses are red, sunflowers are yellow”