And that's a very, very, very big deal.
To learn about Kirchoff's law and exactly why it's invalid, see these lectures:
> What is Kirchoff's Law? Blackbody and Cavity Radiation!
https://www.youtube.com/watch?v=DodFojdkSIA
> Is Kirchhoff's Law True? The Experiment!
https://www.youtube.com/watch?v=YQnTPRDT03U
> Kirchhoff's Law - The Second Experiment!
https://www.youtube.com/watch?v=LE7fZ565DWc
> Kirchhoff's Law, Max Planck, and the Carbon Particle!
https://www.youtube.com/watch?v=m-poyIY7pfQ
> Kirchhoff's Law vs the 2nd Law: The "Boxes Side-by-Side Experiment"!
https://www.youtube.com/watch?v=rsQXu5qLkgg
> Kirchhoff's Law vs the 0th, 1st, and 2nd Laws: The "Box in a Box" Experiment!
https://www.youtube.com/watch?v=5cS1mfZ2XYY
> Linking Planck's Equation with the Physical World!
https://www.youtube.com/watch?v=_w8PJZvnLGI
> The Big Bang, Photons, & The Microwave Background!
https://www.youtube.com/watch?v=NHOo3elX5-c
> History of Kirchhoff's Law - Presentation at German Physical Society (Munich)
https://www.youtube.com/watch?v=83JU6enMBS0
To learn about Kirchoff's law and exactly why it's invalid, see these lectures:
> What is Kirchoff's Law? Blackbody and Cavity Radiation!
https://www.youtube.com/watch?v=DodFojdkSIA
> Is Kirchhoff's Law True? The Experiment!
https://www.youtube.com/watch?v=YQnTPRDT03U
> Kirchhoff's Law - The Second Experiment!
https://www.youtube.com/watch?v=LE7fZ565DWc
> Kirchhoff's Law, Max Planck, and the Carbon Particle!
https://www.youtube.com/watch?v=m-poyIY7pfQ
> Kirchhoff's Law vs the 2nd Law: The "Boxes Side-by-Side Experiment"!
https://www.youtube.com/watch?v=rsQXu5qLkgg
> Kirchhoff's Law vs the 0th, 1st, and 2nd Laws: The "Box in a Box" Experiment!
https://www.youtube.com/watch?v=5cS1mfZ2XYY
> Linking Planck's Equation with the Physical World!
https://www.youtube.com/watch?v=_w8PJZvnLGI
> The Big Bang, Photons, & The Microwave Background!
https://www.youtube.com/watch?v=NHOo3elX5-c
> History of Kirchhoff's Law - Presentation at German Physical Society (Munich)
https://www.youtube.com/watch?v=83JU6enMBS0
