La luz incide con un ángulo determinado cuando pasa del aire a un cristal cuyo índice de refracción es de 1.5. Determinar la velocidad de la luz en el cristal.

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.