Question

How was a fleaglass invented? What could it do?

Answer 1

Answer:

these earrly magnifiers were hence called "flea glases" . Sometimes about the year 1590, two Dutch spectacle makers, Zaccharias Janssen and his father Hans started experimenting with these lenses. They put several lenses in a tube and made a very important discovery called microscope.

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Answer 2

Answer:

hello mate ✅

• He also made a fleaglass, but called it a microscope', and used it to examine small insects. It was an exciting development. A scientist while watching a drop of water through a powerful microscope, found hundreds of germs in it, This helped the scientist to learn more about the cause of various diseases.