Question

who invented the microscope
a)hansjanssen
b)galileo galilei​

Answer 1

Galileo Galilei

In the late 16th century several Dutch lens makers designed devices that magnified objects, but in 1609 Galileo Galilei perfected the first device known as a microscope. Dutch spectacle makers Zaccharias Janssen and Hans Lipperhey are noted as the first men to develop the concept of the compound microscope