In this black and white sketch, we see a leopard comfortably perched upon a tree enjoying his afternoon siesta. Oblivious to ...

In this image, we see a cute duckling, that resembles a plushy toy actually. What seems like a straight forward picture is ...

At first glance, these images look exactly the same, that of a princess in a palace garden, along with one of her staff, where they seem to be pluckin ...

Some optical phenomena depend on the quantum nature of light and the interaction of light with matter. Geometric optics and physical optics are models that describe phenomena while ignoring properties ...