In the fraction 7/12, 7 is called the numerator and 12 is called the denominator. Following are some more fractions: (i) The fraction 5/7 is read as âfive-seventhâ which means that 5 parts out of 7 equal parts in which the whole is divided. In the fraction 5/7, 5 is called the numerator and 7 is called the denominator. (ii) The fraction 3/10 is read as âthree-tenthâ which means that 3 parts out of 10 equal parts in which the whole is divided. In the fraction 3/10, 3 is called the numerator and 10 is called the denominator.
The definition of opaque is not capable of having light pass through or hard to understand. 1  An example of opaque is the quality of a black sheet of paper. 2  An example of opaque is the study of astrophysics.
Yet wood is opaque and blocks light completely, while glass is transparent and lets sunshine stream through unimpeded. You may have heard some people -- even some science textbooks -- try to explain this by saying that wood is a true solid and that glass is a highly viscous liquid. They then go on to argue that the atoms in glass are spread farther apart and that these gaps let light squeeze through.