- Star Tales - Chamaeleon (ianridpath.com)
The celestial chameleon, named after the colour-changing lizard, is one of the constellations representing exotic animals introduced by the Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman when they charted the southern skies in 1595–97. These new southern constellations were first shown on a globe by their fellow Dutchman Petrus Plancius in 1598 and were rapidly adopted by other map makers such as Johann Bayer, since no other observations of the far southern skies were then available. Chamaeleon lies near the south celestial pole, in close pursuit of Musca, the fly.
- Double-slit experiment (Wikipedia)
In modern physics, the double-slit experiment demonstrates that light and matter can satisfy the seemingly incongruous classical definitions for both waves and particles. This ambiguity is considered evidence for the fundamentally probabilistic nature of quantum mechanics. This type of experiment was first performed by Thomas Young in 1801, as a demonstration of the wave behavior of visible light. In 1927, Davisson and Germer and, independently George Paget Thomson and his research student Alexander Reid demonstrated that electrons show the same behavior, which was later extended to atoms and molecules. Thomas Young’s experiment with light was part of classical physics long before the development of quantum mechanics and the concept of wave–particle duality. He believed it demonstrated that Christiaan Huygens’ wave theory of light was correct, and his experiment is sometimes referred to as Young’s experiment or Young’s slits.