BOSTON â President Obama signed an executive order on Monday requiring federal contractors to provide up to seven days of paid sick leave a year, even as he accused Republican congressional leaders of endangering the economy and Republican presidential candidates of undercutting American workers.OSTON â President Obama signed an executive order on Monday requiring federal contractors to provide up to seven days of paid sick leave a year, even as he accused Republican congressional leaders of endangering the economy and Republican presidential candidates of undercutting American workers.
A dwarf star is a star of relatively small size and low luminosity. 1  Most main sequence stars are dwarf stars. The term was originally coined in 1906 when the Danish astronomer Ejnar Hertzsprung noticed that the reddest starsâclassified as K and M in the Harvard scheme could be divided into two distinct groups.
The neutron star exists for the same reason the degenerate dwarf star exists: degeneracy pressure counteracts gravity, so that the star ceases to shrink as it cools. But the source of this pressure in a neutron star is not electrons, as it is in a degenerate dwarf star, but degenerate neutrons and protons.This simple difference is the source for the radical difference in size between the neutron star and the degenerate dwarf.o 15 kilometers is a typical value for a neutron star's radius, compared to the typical degenerate dwarf radius of 10,000 km. A startling consequence of the small size of the neutron star is that its gravitation field is strong enough to exhibit some of the effects of general relativity.