Info

a x: thickness (m); a: cross section (m2); p: mass density (kg/m3); %: thickness in mass units (kg/m2); n: number density (m-3); N;: initial number of photons in beam; t : optical depth (-); k: opacity (m2/kg); N(x): final number after traversing thickness x.

a x: thickness (m); a: cross section (m2); p: mass density (kg/m3); %: thickness in mass units (kg/m2); n: number density (m-3); N;: initial number of photons in beam; t : optical depth (-); k: opacity (m2/kg); N(x): final number after traversing thickness x.

Telescopes Mastery

Telescopes Mastery

Through this ebook, you are going to learn what you will need to know all about the telescopes that can provide a fun and rewarding hobby for you and your family!

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