deletions | additions       diff --git a/As_we_increase_the_accelerating__.tex b/As_we_increase_the_accelerating__.tex  index 5ca8d0d..328ecf5 100644  --- a/As_we_increase_the_accelerating__.tex  +++ b/As_we_increase_the_accelerating__.tex 
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As we increase the accelerating voltage, electrons are gaining more and more kinetic energy and they are colliding with atoms elastically until the kinetic energy reaches the first excitation level of the atom. When the first excitation level is reached, inelastic collisions occur and the electron will transfer all the kinetic its  energyit has  to the atom (refer exactly as much as is required  to Fig. promote the atom to the next highest energy level (Fig.  \ref{fig:collisions}). This corresponds to a dip in current detected by the anode due to the sudden decrease of electrons that reach the anode. As the accelerating voltage continues to increase more dips will occur, corresponding to multiple integers of inelastic collisions happened in the tube. These dips in current explained the quantum nature of atoms.