Created by UK vision company Lenstore, the drawing is an example of the saturation ... also affect how we perceive pictures. When the blue circle is implanted on a lighter shade of blue background ...

paint the whole circle light blue. Once dry, use a blue felt tip pen to draw wavy lines across the whole of your circle. Start from the centre and work all the way down, and then all the way up ...

If you’re looking for a way to dwindle ten minutes - or maybe even ten hours - from your life, then try drawing the perfect freehand circle on a touchscreen device and let this wonderful little ...

So how can you improve your ability to draw circles? You can practice. This math teacher from Ottawa, Alexander Overwijk, is known as the "World Freehand Circle Drawing Champion," though that's ...