Recent content by hongseok

There is a magnet in the shape of a hollow sphere. And the inner surfaces are all n-poles, and the outer surfaces are all s-poles. At this time, how is the magnetic field formed in the empty space of the sphere? There is no s pole for the magnetic force lines from the n pole to enter, so can...

no. Most of it has been resolved. thank you

I'm not claiming that mass changes. Rather, it was taken advantage of. Because the mass of a star does not change, it was thought that when stars of the same mass were plotted on the H-R diagram, it would correspond to their evolutionary path. No. I had no such Imagination. I think you...

I see

Yes.. thank you

The post-AGB phase is short-lived, and the mass changes after the supernova explosion. Therefore, doesn't the scatter plot mainly consist of the process from main sequence stars to supergiants, and can appear in a form close to a straight line?

In the case of stars with a mass of 0.43 to 2 times that of the Sun, the relationship is known to be (luminosity/luminosity of the Sun) = (mass/mass of the Sun)^4. Through this, the mass of the star was obtained. I plotted stars of similar mass on Hertzsprung–Russell diagram, and confirmed the...

I analyzed the relationship between the surface temperature and luminosity of stars of similar mass using a regression model. Through this, I was able to obtain a regression line. Since stars of similar mass show similar evolutionary paths, I believe this regression line can be viewed as a rough...

I learned that diamagnetism is due to Lenz's law. But doesn't Lenz's law only apply when the magnetic field changes? Why does diamagnetism occur even when a constant magnetic field is applied without change?

So, is it wrong to say that it is due to alignment? And can I get a source for your claim?

Why does an Einstein ring sometimes appear and sometimes an Einstein Cross appear? Some say it is due to the distribution of the mass of the galaxy in front, while others say it is due to alignment. What is right? Are both correct? If it is due to the galaxy's mass distribution, I wonder if it...

Can I understand the relationship between binding energy and mass by comparing it to the relationship between kinetic energy and potential energy? When an object falls, its gravitational potential, a scalar value, decreases, and its energy is converted into kinetic energy. Even when a nuclear...

The binding energy per nucleon for each element has a specific pattern. It increases from hydrogen to iron and then decreases again. What is the fundamental reason why the binding energy per nucleon has this pattern? According to my investigation, the range of action of the strong force is...