day-glo colors are especially bright, clean materials which can be much brighter than conventional colors. They were first developed in the 1930s, finding their way into magic shows, stage shows, and movie promotion posters. They contain certain dyes and resins that produce colors far brighter ...
In other words, if you extend the channel line from an adjacent star, a line that really is at 30° to the horizontal, it would come in a bit high for the vertex X in the diagram above: 3.5 mm high in a pattern where s, the side length, is 100 cm. Although I was pretty picky...
The evolution of gas-liquid foams has been an attractive topic for more than half a century. However, it remains a challenge to manipulate the evolution of foams, which restricts the development of porous materials with excellent mechanical, thermal, cat
I show that a fifth century BCE Uruk tablet employs the Ancient method, but possibly with very strange consequences, and that a Ptolemaic Egyptian papyrus that checks this method by comparing the area of a circle calculated from the sum of a regular inscribed polygon and the areas of the segm...