For stars 0.4 times the mass of our Sun up until about ten times, helium starts to aggregate in the star's core as the fusion process continues. Helium does not fuse easily, so it just hangs around. Its greater density causes hydrogen to be pushed together very strongly in the layers ab...
So much mass accretes on the white dwarf that its core reaches a critical density sufficient to spark the uncontrolled fusion of carbon and oxygen, which detonates the star. Type II Supernova Stars exist in a delicate balance between their own gravity and the fusion engine they ignite. The ...
The theory is that some stars explode when their density increases to a particular point; they “collapse” and sometimes a supernova(超新星)occurs. The collapse of a star may produce a “White Dwarf(白矮星)”or a “neutron star”--- a star whose matter is so dense that it continually...
Once the collapse process has started and the density of hydrogen atoms of the cloud has risen significantly, the fragmentation into smaller cloudlets will take place. And, subsequently, these cloudlets eventually collapse to form individual stars. Therefore, the theory of uh...gravitational condensati...
What is the density of planetary nebulae? Explain why do 5 solar mass stars form planetary nebulas, (thus shedding their mass and allowing them to turn into white dwarfs) but 10 solar mass stars do not? How many solar masses is a black hole?
Is the universe a sphere or flat? Whether the universe is flat or curved like a sphere (closed) depends on how close the density of matter is to the critical density. Measurements show that the density is almost a match for the critical density, which indicates a flat universe. ...
What is the densest substance in the universe?Density:The density of any material is the physical property, which shows the mass in unit volume. Density shows how closely the atoms of any matter is arranged; it is generally measured in kilogram cubic meter inverse....
6. pick on the aged and the poor7. The question will always boil down to8. Hardly had he walked out of the door9. did he realize that he had made a wrong decision10. What makes her thrilled is not how much money he has———Paragraph translation1) "As is said by Confucius, just...
For instance, the classical Weyl law predicts (assuming a smooth confining potential ) that the density of states up to energy –that is to say, the number of bound states up to –should asymptotically behave like . This is accurate at very high energies , but when is disordered, it ...
yes, opting for a higher resolution improves image quality as it offers greater pixel density and more screen real estate. however, keep in mind that higher resolutions require more powerful hardware to run smoothly and might come at a higher cost. what is the refresh rate of a monitor? the...