The meaning of his wife's dream is a sign of a bad omen.
If a vector A is multiplied by a real number (say n), the vector of same nature is obtained but its magnitude is n times that of A.
It is theoretically possible for a substance to have a negative value of cubical expansivity, which means that the substance would contract rather than expand when the temperature increases. However, it is very rare for a substance to have a negative value of cubical expansivity over a significant range of temperatures.
One example of a substance that has a negative value of cubical expansivity over a limited range of temperatures is water. Water has a positive value of cubical expansivity at...
