A photographer recently snapped this pic of an orange alligator in South Carolina. An expert explains why the gator is such ...

Our world is one of green forests, blue skies and glowing orange sunsets ... of the real world We think of colour as being a fundamental property of objects in life: green trees, blue sky ...

The colour of an object is determined by the wavelength of ... white light into a spectrum of colours: red, orange, yellow, green, blue, indigo and violet. Dispersed means that the colours are ...