L9.1 The interaction picture and time evolution

[@YossiSirote]

“I’m speaking slowly, but going a little fast.” That summarizes Prof Barton’s whole style ❤.

[@luffyphysicist6289]

Great explaination sir thank you

[@andrescardenas6815]

Es increíble pensar, que esta clase no hubiese sido posible sin internet, pero ahora es posible y parece que muchos no le sacan provecho. 😵

[@sayantanmondal2403]

Great lecture

[@sungs9915]

달달하네요^^

[@prateekagrawal9584]

Thank you sir

[@cikif]

7:30 "... from one energy *eigenstate* ..."
21:08 "...the -face- *phase* times that..."
21:30 "...d/dt of this -cat- *ket* .
22:50 "...nice -concolation- *cancellation* over here."

[@chogussy721]

?