In QRS wave, P wave shows atrial contraction or depolarisation whereas, T wave shows ventricular repolarisation.
what causes abnormal t waves
it is not risky for life
not inverted
Reflected waves can be inverted or not depending on the medium through which the wave is traveling. In a denser medium, like a solid, waves are typically inverted upon reflection. In a less dense medium, like air, waves may not be inverted upon reflection.
Reflected but not inverted
If you mean who invented the telephone, not inverted, then it was Alexander Graham Bell.
The next wave after the T wave in an ECG is the P wave, which represents atrial depolarization.
An inverted capital T
An inverted "T"
When a wave is reflected from a rigid support, there is a change in phase of 180 degrees, or pi radians. This means that the wave is inverted upon reflection.
inverted butterfly