Explaining the Inner Product in Quantum Mechanics (Using Bras and
![](https://i.ytimg.com/vi/qtQoWm4p9-0/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLAOE4saBxGhs_dlEBSquvpkmGN0-Q)
![](https://i.ytimg.com/vi/tLCUvtx5upk/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLBOr0PTurFiyfePva3XPz02S4CzOg)
Explaining the Inner Product in Quantum Mechanics (Using Bras and Kets)
![](https://i.ytimg.com/vi/qcKQs86CYf0/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLByZ8r1O6A6ugtE3Dc2Lzc53rOPMg)
Addition of Angular Momentum example 2: j1=1 and j2=2
![](https://i.ytimg.com/vi/hVSC0e3ZJog/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLBOa66dpjUaJq2micTa90G4S6Poyg)
Causality and Propagators in Free Klein-Gordon QFT
![](https://i.ytimg.com/vi/GeXW_xxLrDI/sddefault.jpg)
COMPLEXOS - Segunda fórmula de Moivre
![](https://i.ytimg.com/vi/Naw79OPOerk/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLDCx24nkWQb4PNgSLoRRD0PB4t68g)
Causality and Propagators in Free Klein-Gordon QFT
![](https://i.ytimg.com/vi/nLfbuwOo0d8/hq720.jpg?sqp=-oaymwE7CK4FEIIDSFryq4qpAy0IARUAAAAAGAElAADIQj0AgKJD8AEB-AG-B4AC0AWKAgwIABABGGUgZShlMA8=&rs=AOn4CLBFiVE6CfRKd4DLbXjQ9WISm8W00w)
i.ytimg.com/vi/nLfbuwOo0d8/hq720.jpg?sqp=-oaymwE7C
![](https://i.ytimg.com/vi/njX2bToZl98/sddefault.jpg)
COMPLEXOS - Segunda fórmula de Moivre
![](https://i.ytimg.com/vi/liQoSIaYBJk/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLAkNStRxlFsbAghMR4f8FfNseTw9A)
Causality and Propagators in Free Klein-Gordon QFT
![](https://i.ytimg.com/vi/atfBvPTfMTI/hqdefault.jpg?sqp=-oaymwEXCOADEI4CSFryq4qpAwkIARUAAIhCGAE=&rs=AOn4CLCY2kuZmrnlIM1kvx0PHCuCT9bmgQ)
Nick Heumann
![](https://i.ytimg.com/vi/kA7BQaQyNE4/maxresdefault.jpg)
Addition of Angular Momentum example 2: j1=1 and j2=2
![](https://i.ytimg.com/vi/UEWfoa3STec/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLBWI2kuGC2yqc4sOoXZRpSh1fgHMw)
The EASIEST Explanation of the Gram-Schmidt Procedure (Griffiths QM 3rd ed. Problem 3.4)
![](https://i.ytimg.com/vi/61BF_G6ZFTU/mqdefault.jpg)
A ray of light is refracted through a prism in the position of minimum deviation
![](https://i.ytimg.com/vi/mP5FXXfQoZg/hqdefault.jpg)
Nick Heumann