What would the information on magnetic tape look like if it were visible?

Question

For example, would it look like waveforms printed onto the tape? Or are they fast magnetic pulses of some kind?

In: Engineering

Answer 1

You can actually get a small device that lets you see the magnetic information stored on a tape.

[It’s made of vertical lines, looks a bit like a bar code](https://youtu.be/aZOxn8ggX8w)