Ok yeah this one has a few nice pages about the tiny things that live in water. I like those. If this is the book that I remember from when I was a kid, then it's quite likely that I only really read those pages and ignored the rest.

The explanation of how lenses of magnifying glasses work is really bad imo, I totally didn't get it. I understood more from Wikipedia than from this! But the explanations of electron microscopes, on the other hand, were pretty good, I never got those before and I feel like now I have a vague idea of what they do.

All in all I would have preferred more details on the tiny things that live in water. But it was an ok book.