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.
State Laws on When a Child is Old Enough to be Alone. State laws vary quite a bit. Some states, including Texas, have not set a minimum age. Others, including Oregon, set a minimum age of 10 years old, while states like Maryland do not allow parents to leave a child under the age of 8 alone at home or in a car. Some states set a minimum age for babysitters as well.