why Tsun=5780 and numE=1000?

Answer 1

[Walter Roberson]

Tsun is the approximate temperature of the Sun, which is said to have a surface temperature of 5772 K

I would need more context to guess what numE is here.

[YaLin]

[YaLin]

I need to draw this diagram now, I don't know how to change Tsun and numE

[Walter Roberson]

numE is the number of different E values to plot over. You can change it to any integer that gives you enough points for a plot that is smooth enough for your purposes.

For your case I suspect you should be changing to

E = linspace(0.1, 4, numE);

If you want to plot for multiple Tsun then use a for loop, such as

for Tsun = [5000 5500 5780 6000 7000 10000]
    
end

[YaLin]

I still don't understand this code, can I add your contact information to ask? thank you very much