Gallium highly reactive (rubidium and caesium) nor highly toxic (mercury) and can therefore be used in metal-in-glass high-temperature thermometers. It is also notable for having one of the largest liquid ranges for a metal, and for having (unlike mercury) a low vapor pressure at high temperatures. Gallium's boiling point, 2673 K, is more than eight times higher than its melting point on the absolute scale, the greatest ratio between melting point and boiling point of any element. Unlike mercury, liquid gallium metal wets glass and skin, along with most other materials (with the exceptions of quartz, graphite, and Teflon), making it
Willem van Heythuysen Posing with a Sword Willem van Heythuysen Posing with a Sword Willem van Heythuysen posing with a sword is a painting by the Dutch Golden Age painter Frans Hals, painted in 1625 and now in the Alte Pinakothek, Munich. It shows the Haarlem cloth merchant Willem van Heythuysen in a theatrical pose with a rapier. The painting shows a proud man standing in front of a neoclassical architectural element with drapery, leaning on a sword. In the distance a garden with a couple can be seen, and in the foreground some roses lie on the ground. It was first documented by Adriaan Loosjes, who