Microscope Ornament Size:4.75 X 2.25 X 1.5 firefighters have used helmets to

firefighters have used helmets to protect their heads while risking their lives to extinguish flames

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Microscope Ornament Size:4.75 X 2.25 X 1.5 firefighters have used helmets toThe earliest microscopes were called "flea glasses" as they were originally used to study small bugs. The first microscope was invented by Hans and Zacharius Jansen in the 1600s and has gone through numerous improvements over the centuries. Today, we can see an entire universe of minute organisms, thanks to this ingenious device.