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HR (Hertzsprung Russell) Diagram - how stars are classified based on magnitude & temperature

In this video I review the HR (or Hertzsprung Russell) Diagram. Quickly reviewing the concepts of brightness and colour of a star, I show you how we can classify stars and how that leads to better understanding of the nature of stars. See my separate videos on Magnitude -    • how we determine a star's true bright...   Temperature -    • how a star's colour tells us its temp...   Subscribe -    / physicshigh   LIKE and SHARE with your peers. And please add a COMMENT to let me know I have helped you. Support my work either regularly at Patreon: www.patreon.com/Physicshigh OR a one off payment at PayPal: [email protected] Physics High is committed to producing content that teaches physics concepts at a level a high schooler can understand. See www.physicshigh.com for all my videos and other resources. 👥 Social --------------------------------------------------------- Follow me on facebook: @physicshigh twitter: @physicshigh Instagram: @physicshigh #highschoolphysicsexplained #physicshigh