Christmas playing cards are purchased in significant quantities and feature artwork, commercially intended and suitable into the period. The information of the look may possibly relate on to the Christmas narrative, with depictions from the Nativity of Jesus, or Christian symbols including the Star of Bethlehem, or maybe a white dove, which often c

You might think scientists know the many responses, but light continues to surprise them. Here's an instance: We've constantly taken for granted that light travels more quickly than anything during the universe. Then, in 1999, scientists at Harvard College had been ready to gradual a beam of light down to 38 miles an hour (61 kilometers per hour) b