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Hello,

Lets say you need to calculate the location of the magnetopause subsolar point on earth and you only have this information:

> Solar wind proton number density: 10 cm−3

> Solar wind speed: 700 km s−1

Chapman_ferraro equations:

What is the difference between the above chapman-ferraro equations? Why does one of them have 2^1/3 in front and one doesnt? What does the "pl" & "E" stand for?

Which one is more applicable to my case scanario?

Lets say you need to calculate the location of the magnetopause subsolar point on earth and you only have this information:

> Solar wind proton number density: 10 cm−3

> Solar wind speed: 700 km s−1

Chapman_ferraro equations:

What is the difference between the above chapman-ferraro equations? Why does one of them have 2^1/3 in front and one doesnt? What does the "pl" & "E" stand for?

Which one is more applicable to my case scanario?