Text: thus we see at the bottom an impulse that is just about to disappear from the earth.

Correct capitalization: Thus we see at the bottom an impulse that is just about to disappear from the Earth.

Text: tip: incorrect dae file association errors can be a symptom of other underlying issues within your windows operating system.

Correct capitalization: Tip: Incorrect DAE file association errors can be a symptom of other underlying issues within your Windows operating system.

Text: 7794-2/1000 - complete calibration system perfectcontrol

Correct capitalization: 7794-2/1000 - Complete calibration system perfectControl

Text: during his last year [at the university of pennsylvania] adrain had serious problems with discipline in his classes.

Correct capitalization:
During his last year [at the University of Pennsylvania] Adrain had serious problems with discipline in his classes.