No, you cannot see light passing through holes in the screen of an oscilloscope. The screen of an oscilloscope is not designed to allow light to pass through it. It is typically made of a phosphor-coated glass that emits light when struck by an electron beam. The electron beam is generated inside the oscilloscope and controlled to create the desired waveform on the screen.
The purpose of an oscilloscope is to display electrical signals as waveforms, allowing you to analyze and measure various properties of the signals, such as voltage, frequency, and timing. The screen of an oscilloscope is opaque and is not transparent like a window or a perforated material. Its primary function is to provide a visible representation of the electrical signals being measured, rather than allowing light to pass through it.
So, if you look at the screen of an oscilloscope, you will not see light passing through holes or any other transparent areas. Instead, you will see the phosphor coating emitting light in response to the electron beam, forming the waveform display.