The first mechanical clock was invented during the early Renaissance. Improvements were made by Galileo who invented the pendulum in 1581. This invention allowed clocks to be made that were much more accurate.any of the great scientific discoveries made during the Renaissance were in the area of astronomy. Great scientists such as Copernicus, Galileo, and Kepler all made major contributions. This was such a big subject that we devoted an entire page to it. Learn more about it at our page on Renaissance Astronomy.
Massachusetts does not set a specific age at which a child can be left home alone. In Massachusetts, such issues are decided on a case-by-case basis. For information on abandonment and neglect, see MGL c.119 s.his definition is not dependent upon location (i.e., neglect can occur while the child is in an out-of-home or in-home setting.). Other states have provided some helpful information for parents on the topic, however. See, for example, Florida's When to Leave Your Kids Alone.
As of yet, there is no set legal age for children to be left home alone in Pennsylvania. However, if you leave a child who is not mature enough home alone and something bad ha â¦ ppens the court will take into consideration several things.ost places believe that 12 or 13 is okay to leave home alone for a couple of hours during daylight hours.   Legal Age   There are very few states in the U.S. with legal minimum ages for children home alone, but many state agencies have published guidelines.