WORLD HISTORY

Detailed explanation-1: -In the 20th century, new instruments such as the electron microscope increased magnification and offered new insights into the body and disease, allowing scientists to see organisms such as viruses for the first time.

Detailed explanation-2: -During the scientific revolution, Janssen invented a microscope and this instrument helped others study the natural world. This also lead to new discoveries. Janssen’s invention was a huge advancement in technology at that time.

Detailed explanation-3: -With microscopes, biologists discovered that living things were made of cells. Cells are the little factories that work together to make up larger living things like humans.

Detailed explanation-4: -The first compound microscopes date to 1590, but it was the Dutch Antony Van Leeuwenhoek in the mid-seventeenth century who first used them to make discoveries.

Detailed explanation-5: -1590: Two Dutch spectacle-makers and father-and-son team, Hans and Zacharias Janssen, create the first microscope.