Color or colour (see spelling differences) is the visual perceptual property corresponding in humans to the categories called red, blue, yellow, green and others. Color derives from the spectrum of light (distribution of light power versus wavelength) interacting in the eye with the spectral sensitivities of the light receptors. Color categories and physical specifications of color are also associated with objects, materials, light sources, etc., based on their physical properties such as light absorption, reflection, or emission spectra. By defining a color space, colors can be iden...

Hanukkah gelt ( '; ', both meaning literally "Hanukkah money") refers to money as well as chocolate coins given to Jewish children on the festival of Hanukkah. History Money Rabbi A. P. Bloch has written that "The tradition of giving money (Chanukah gelt) to children is of long standing. The custom had its origin in the seventeenth-century practice of Polish Jewry to give money to their small children for distribution to their teachers. In time, as children demanded their due, money was also given to children to keep for themselves. Teenage boys soon came in for their share. Accordin...

The European Coal and Steel Community (ECSC) was a six-nation international organisation serving to unify democratic countries of Europe during the Cold War and create the foundation for the modern-day developments of the European Union. The ECSC was the first organisation to be based on the principles of supranationalism. The ECSC was first proposed by French foreign minister Robert Schuman on 9 May 1950 as a way to prevent further war between France and Germany. He declared his aim was to "make war not only unthinkable but materially impossible." The means to do so, Europe's first sup...