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Hans and Zacharias Janssen invented the microscope

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Q: What are the contributions of Hans and Zacharias Janssen?
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Related questions

What Hans and zacharias janssen discovered?

Hans and Zacharias Janssen invented the first compound microscope.They did not discover it.


What year did Hans and Zacharias Janssen's contribution to the cell theory occur?

Hans and Zacharias Janssen invented the compound microscope in 1595.


Where was Hans and zacharias jenssen born?

Zacharias Janssen was born In 1580.


When was Hans janssen born?

Hans Janssen was the supposed creator of the microscope, along with his son, Zacharias Janssen. Actually, Hans Janssen was the son of Zacharias Janssen, not the other way around. And yes they did invent the first Compound Microscope in the year 1590.


Who was zacharias janssen brother who help to discover the microscope?

hans janssen is the brother of zacchariah janssen


How are Hans and Zacharias Janssen related?

they were father and son


When did Zacharias janssen and Hans discover cell theory?

in manila


Who invented the lens grinding machine?

Hans and Zacharias Janssen


What happened in 1590?

zacharias and Hans janssen invented the microscope


What was Zacharias Janssen contributions?

Zacharias Janssen was a Dutch spectacle-maker of Middelburg. Hans Janssen and his son Zacharias Janssen, Dutch spectacle-makers, are frequently cited as having invented the first compound microscope in 1590, but there is a good deal of dispute. They may not have. Zacharias Janssen was the one who actually made the claim, and in the middle of the 1600's. A number of historians, however, agree that it is imporbable that 1590 is correct. There is a good deal of evidence that Zacharias Janssen was born somewhere around 1590.


What was Hans and Zacharias Janssen's contribution?

Hans and Zacharias Janssen are credited with inventing the first compound microscope around 1590. Their creation allowed for the magnification of small objects, leading to advancements in scientific observation and research.


Who are Hans and zacharias janssen?

They were dutch inventors. They were father and son. They made the first microscope.