Science Timeline

Timeline created by MTroia in Science and Technology

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Event Date:	Event Title:	Event Description:
01/01/1590	First Microscope Invention	In 1590, the first ever microscope was invented by Zaccharias and Hans Jassen. These two dutch brothers / inventors definately made a huge contributiion to Science!
01/01/1665	First Discovery of Cells	In 1665, Robert Hooke used the microscope created by Zaccharias and Hans to examine a slice of cork. During his examination, he noticed small box like structures, and called them cells. Thus, this was the first discovery of cells.
01/01/1675	Living Cells Are Observed for the First Time	In 1675, Antony Van Leeuwenhoek improved the microscope created by the Hans brothers. After improving the microscope, he was able to observe living cells for the first time.
01/01/1683	Discovery of Bacteria	In 1683, Antony Van Leeuwenhoek discovered bacteria while looking under a microscope.
01/01/1833	Discovery Of The Nucleus	In 1833, Robert Brown discovered the cell nucleus.
01/11/1838	Discovery About Plant Cells	In 1838, Matthias Schleiden observed different plants, and concluded that all plants are made of cells. Because of this discovery, Matthias was definately a major contributer to a part of the cell theory.
01/01/1839	Discovery of Animal Cells	In 1839, Theodor Schwann observed and concluded that animals are made of cells. Instead of making two different part of the cell theory, his discovery was combined with Matthias Schleiden's to create one major theory.
01/01/1858	Virchow Adds To The Cell Theory	In 1858, Rudolf Virchow stated that cells come from pre- existing cells. This discovery was added to the Cell Theory. Rudolf was the last person to add to the cell theory. The concluded four main parts of the cell theory (including Rudolf's) are: 1. All cells come from pre - exsisting cells 2. The well being of an organism depends ont the well being of it's cells 3. All living things are composed of cells 4. Cells are the basic building blocks of life
01/01/1931	Electron Microscope Was Developed	In 1928, Ernst Ruska and Max Knoll created the first Electron Microscope with a maginification of 17x. These germans created a very important tool that has been modified over time, and is still being used today.
Timespan Dates:	Timespan Title:	Timespan Description:
01/11/1590 to 01/11/1928	Scientific Timeline