Kinetic Energy: T or K in Mechanics/QM?

[pivoxa15]

In classical mechanics, the kinetic energy is denoted T. Why not K? In QM the kinetic energy operator is sometimes denoted by T as well although I have seen it denoted as K.

 

[arildno]

Shrouded in mystery, forgotten lore irretrievable from the hoary, ancient past..

 

[christianjb]

We can't tell you that information yet, but we can reveal that thousands have died protecting the secret.

 

[radou]

Yet some of the struggling survivors are still spilling their blood in order to keep the secret unrevealed and safe to a world which is still unprepared to face the eyes of the truth.