one of the modern phenomena in human societies is having children from a rented womb in which the woman who is owner of the womb, bears sperm of another person in her womb and after spending pregnancy period, delivers the newborn child to the couple owning the gamete on based on presigned contract. there are a few statements in the juridical laws of many countries among them iran concerning thi...

this article discusses the role of time and location in jurisprudence, its’ impacts on the changes of jurisprudent’s opinions and it’s relation with women’s rights. time and location are two important factors in these processes. that is changes in the society causes changes in decrees, in judgments and as the result evaluation in the people’s understanding of religion. provision of women’s righ...

business of goods is one of the necessities of social life. man has produced the money to facilitate the business, which simultaneously with the development of social and economic life has taken different forms. intrinsic value of some money and relative value of the other and the role of the inflation in decrease in value of money cause the different religious commandments. that is why, for co...

In this paper, we present some learning objects for the study of Kepler's laws that graphically show the orbits and the movements of various planets. One of them shows the orbit of a planet from the point of view of a fixed planet, showing that the orbit is quite involved. No differentials equations are required, but only elementary vector calculus. The learning objects have been implemented in...

In Bird 2001 I argued that a law that might seem to many to be contingent is in fact necessary. In short the argument is this. Given the existence of salt and water, Coulomb’s law of electrostatic attraction is sufficient to make the former dissolve in the latter. So any possible world in which salt failed to dissolve in water would be one in which Coulomb’s law is false. However, it is also th...