Marcel Duchamp’s last painting has influenced artists for a century. Kelly Grovier looks at how it inspired the modern colour chart – and at its 17th-Century predecessor. This year marks the centenary ...

Marcel Duchamp’s last painting has influenced artists for a century. Kelly Grovier looks at how it inspired the modern colour chart – and at its 17th-Century predecessor. This year marks the centenary ...

With the use of Microsoft's PowerPoint presentation software, you have a powerful tool for creating slideshows that contain any number of different elements. One option you have is to create and edit ...